Finished product sealing performance detection device for power cable terminal accessory processing

Abstract

The invention discloses a finished product sealing performance detection device for power cable terminal accessory processing, and relates to the technical field of power cable terminal accessory processing. According to the finished product sealing performance detection device for power cable terminal accessory processing, through the synergistic effect of the detection box, the box cover, the damping hinge, the clamping assembly and the airtightness detection assembly, efficient and accurate sealing performance detection of a power cable terminal accessory finished product is achieved, and the detection box serves as a main body structure and provides a stable detection environment; the box cover is connected with the detection box through a damping hinge, so that the box cover is convenient to open and close and can stay at any angle, and operators can place and take out accessories to be detected conveniently; the clamping assembly is responsible for firmly fixing the accessory and ensuring that the accessory does not displace or loosen in the detection process and the accuracy of the detection result is not influenced; and the airtightness detection assembly is used for judging whether the sealing performance of the accessory reaches the standard or not by filling or extracting gas into or out of the detection box and monitoring the change of internal air pressure.

Description

Technical Field

[0001] This invention relates to the field of power cable terminal accessory processing technology, specifically to a device for testing the sealing performance of finished power cable terminal accessories. Background Technology

[0002] The processing of power cable terminal accessories refers to the process of insulating, sealing and electrically connecting the ends of cables. Its core purpose is to ensure that the cables are safely and reliably connected to electrical equipment (such as switch cabinets, transformers, etc.), while achieving uniform electric field distribution, mechanical protection and moisture-proof sealing.

[0003] Conventional sealing testing devices for power cable terminal accessories have often had limitations in previous applications. For example, the clamping components of some traditional devices have limited functionality, making it difficult to achieve stable and flexible clamping of power cable terminal accessories of different specifications and shapes. During the testing process, the accessories are prone to displacement due to insecure clamping, which can interfere with the normal operation of the airtightness testing components, resulting in low testing efficiency and potentially damage to the accessories. Summary of the Invention

[0004] The purpose of this invention is to provide a sealing performance testing device for finished products used in the processing of power cable terminal accessories, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a sealing performance testing device for finished products used in the processing of power cable terminal accessories, comprising a testing box and a clamping assembly. The top of the testing box is provided with a box cover, and damping hinges are symmetrically installed on the left and right sides of the connection between the testing box and the box cover. The clamping assembly is installed on the inner bottom side of the testing box, and an airtightness testing assembly is connected and installed on the lower side of one side of the testing box. The clamping assembly includes a first guide rail, a second guide rail, elastic grippers, and a limit bolt. The second guide rail is provided on both sides of the middle part of the first guide rail, and elastic grippers are slidably installed on the surfaces of the first guide rail and the second guide rail. Moreover, a limit bolt is installed on the horizontal thread of the lower side of the elastic gripper.

[0006] Furthermore, the testing box includes a main body, a first sealing ring, a control panel, a first mating lug, a spring lock, and a lifting ring. The first sealing ring is provided at the top edge of the inner part of the main body, and the control panel is installed on the front surface of the main body. The first mating lugs are symmetrically arranged on the upper front side of the main body, and the spring locks are symmetrically and vertically installed on the top of both the left and right sides of the main body. At the same time, a lifting ring is installed in the middle of the upper part of the middle of the left and right sides of the main body.

[0007] Furthermore, the main housing and the first docking lug are integrally formed, and the lower end of the damping hinge is connected to the upper rear side of the main housing.

[0008] Furthermore, the box cover includes a main cover body, a locking hook, a second sealing ring, a second mating lug, and a fastening bolt. The main cover body has locking hooks symmetrically installed on both the left and right sides, and a second sealing ring is provided at the bottom edge of the inner side of the main cover body. The lower end of the front surface of the main cover body has second mating lugs symmetrically arranged on the left and right sides, and a fastening bolt is installed in the middle of the second mating lug with a vertical thread.

[0009] Furthermore, the second mating lug is integrally formed with the main cover, the lower end of the fastening bolt is threadedly connected to the first mating lug, and the upper end of the damping hinge is connected to the lower rear end of the main cover.

[0010] Furthermore, the first guide rail and the second guide rail are combined in a cross shape, and the lower end of the elastic gripper is connected to the first guide rail and the second guide rail in a slotted embedded structure.

[0011] Furthermore, the airtightness testing component includes a miniature vacuum pump, a mounting base, an exhaust valve pipe, and an airtightness tester. The mounting base is provided at one end of the miniature vacuum pump near the testing box, and exhaust valve pipes are symmetrically installed on the left and right sides of the end of the miniature vacuum pump away from the mounting base. The airtightness tester is installed on the top of the miniature vacuum pump.

[0012] Furthermore, the connection between the fixed base and the detection box is provided with four sets of holes in a ring array for bolt installation, and the exhaust valve pipe adopts a manually adjustable structure.

[0013] This invention provides a device for testing the sealing performance of finished products used in the processing of power cable terminal accessories, which has the following advantages: 1. This invention, through the setting of the clamping component, utilizes a cross-shaped sliding track formed by the first and second guide rails, combined with the slotted embedded connection structure of the elastic claws, to achieve precise positioning and adaptive clamping of power cable terminal accessories of different specifications. The clamping component adopts a four-set independent limit bolt design, which can be used to fix the accessories differently according to their shape characteristics, effectively avoiding displacement deviation caused by vibration during the testing process. Compared with the rigid clamps of traditional testing equipment, this device, through the flexible buffer structure of the elastic claws, evenly distributes the testing pressure to the surface of the accessory, ensuring the contact strength required for sealing testing and avoiding the deformation of the accessory caused by local stress concentration, thereby significantly improving the reliability of the testing results.

[0014] 2. This invention, through a sealed cavity structure consisting of a testing box, a box cover, and a damping hinge, combined with a double-sealing design of a first sealing ring and a second sealing ring, effectively prevents the intrusion of external humid air and dust, providing a stable testing environment for the airtightness testing component. This structure achieves reliable closure of the box cover and testing box 1 through mechanical locking of spring latches and hooks, and threaded connection of fastening bolts and first mating ears. Compared with traditional single-layer sealing structures, the composite sealing system of this device improves the stability of air pressure inside the testing cavity by more than 30%. At the same time, through the coordinated design of the lifting ring and the damping hinge, it not only meets the needs of portable transportation, but also ensures the precise alignment of the sealing surfaces during opening and closing, thereby ensuring the convenience of using the entire device.

[0015] 3. This invention achieves fully automated control of the entire process from vacuuming to pressure monitoring through the linkage design of the miniature vacuum pump and the airtightness detector in the airtightness detection component. The four sets of bolt mounting holes of the fixed base ensure a rigid connection between the pump body and the detection box, avoiding measurement errors caused by vibration during the detection process. The manual adjustment structure of the exhaust valve pipe can flexibly adjust the pressure relief rate according to the material characteristics of the accessories. Combined with the 0.1Pa-level accuracy monitoring of the airtightness detector, the device can accurately capture minute leaks of more than 0.5%. Compared with the traditional manual detection method, the automated detection efficiency of this device is increased by 5 times, and the data repeatability error is controlled within ±2%. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main body of a sealing performance testing device for processing power cable terminal accessories according to the present invention; Figure 2 This is a schematic diagram of the test box structure of a finished product sealing test device for processing power cable terminal accessories according to the present invention; Figure 3 This is a three-dimensional structural diagram of the cover of a sealing performance testing device for processing power cable terminal accessories according to the present invention; Figure 4 This is a three-dimensional structural diagram of the clamping assembly of a finished product sealing test device for processing power cable terminal accessories according to the present invention; Figure 5 This is a three-dimensional structural diagram of the airtightness testing component of a finished product sealing testing device for processing power cable terminal accessories according to the present invention.

[0017] In the diagram: 1. Testing box; 101. Main box body; 102. First sealing ring; 103. Control panel; 104. First docking lug; 105. Spring lock; 106. Lifting ring; 2. Box cover; 201. Main cover body; 202. Locking hook; 203. Second sealing ring; 204. Second docking lug; 205. Fastening bolt; 3. Damping hinge; 4. Clamping assembly; 401. First guide rail; 402. Second guide rail; 403. Elastic gripper; 404. Limit bolt; 5. Air tightness testing assembly; 501. Miniature vacuum pump; 502. Fixing base; 503. Exhaust valve pipe; 504. Air tightness tester. Detailed Implementation

[0018] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0019] like Figures 1 to 5 As shown, a sealing test device for finished products used in the processing of power cable terminal accessories includes a test box 1 and a clamping assembly 4. A box cover 2 is provided on the top of the test box 1, and damping hinges 3 are symmetrically installed on the rear side of the connection between the test box 1 and the box cover 2. The clamping assembly 4 is installed on the inner bottom side of the test box 1, and an airtightness test assembly 5 is connected and installed on the lower end of one side of the test box 1. The clamping assembly 4 includes a first guide rail 401, a second guide rail 402, elastic grippers 403, and a limiting bolt 404. The second guide rail 402 is provided on both sides of the middle of the first guide rail 401, and elastic grippers 403 are slidably installed on the surfaces of both the first guide rail 401 and the second guide rail 402. A limiting bolt 404 is horizontally threaded onto the lower side of the elastic gripper 403. The first guide rail 401 and the second guide rail 402 are arranged in a cross-shaped structure, and the lower end of the elastic gripper 403 is connected to the first guide rail 401 and the second guide rail 402. All 402 components are interconnected using a slotted, embedded structure. The cross-shaped sliding track formed by the first guide rail 401 and the second guide rail 402, combined with the slotted, embedded connection structure of the elastic gripper 403, allows the elastic gripper 403 to be flexibly adjusted on the track according to the specific shape and size of the power cable terminal accessory. This design not only enhances the versatility of the device, adapting to the testing needs of power cable terminal accessories of various specifications and shapes, but also achieves gentle clamping of the accessory through the elastic deformation capability of the elastic gripper 403, effectively avoiding damage to the accessory due to excessive clamping force. In actual operation, the operator only needs to simply adjust the position of the elastic gripper 403 on the first guide rail 401 and the second guide rail 402 according to the size and shape of the accessory, and fix the gripper by rotating the limiting bolt 404 to quickly complete the positioning and clamping of the accessory, greatly improving testing efficiency.

[0020] like Figures 1 to 5As shown, the testing box 1 includes a main body 101, a first sealing ring 102, a control panel 103, a first mating lug 104, a spring lock 105, and a lifting ring 106. The first sealing ring 102 is located at the top edge of the inner part of the main body 101, and the control panel 103 is mounted on the front surface of the main body 101. The first mating lugs 104 are symmetrically arranged on the upper front side of the main body 101, and spring locks 105 are symmetrically and vertically mounted on the top edges of both sides of the main body 101. A lifting ring 106 is installed in the middle of the upper part of the left and right sides of the main body 101. The main body 101 and the first mating lugs 104... The two parts are integrated into one structure, and the lower end of the damping hinge 3 is connected to the upper rear side of the main body 101. The cover 2 includes a main cover body 201, a locking hook 202, a second sealing ring 203, a second mating ear 204, and a fastening bolt 205. The locking hooks 202 are symmetrically installed on both the left and right sides of the main cover body 201. The second sealing ring 203 is provided at the bottom edge of the inner side of the main cover body 201. The second mating ears 204 are symmetrically arranged on the lower side of the front surface of the main cover body 201. The fastening bolt 205 is installed in the middle of the vertical thread of the second mating ear 204. The second mating ear 204 and the main cover body 201 are integrated into one structure. The lower end of 205 is threadedly connected to the first mating lug 104, and the upper end of the damping hinge 3 is connected to the lower rear end of the main cover 201. A double-sealing structure is formed between the main body 101 of the detection box 1 and the main cover 201 of the cover 2 via the first sealing ring 102 and the second sealing ring 203, effectively preventing external humid air and dust from entering the detection chamber. This sealing design not only ensures the environmental stability of the airtight detection component 5 during the detection process, but also achieves reliable closure between the cover 2 and the detection box 1 through the mechanical locking of the spring latch 105 and the locking hook 202, and the threaded connection between the fastening bolt 205 and the first mating lug 104. In actual operation, the operator only needs to close the lid 2 onto the test chamber 1, and then rotate the fastening bolt 205 to make it threadedly connected with the first mating ear 104 to complete the sealing of the chamber. Compared with the traditional single-layer sealing structure, this design significantly improves the stability of the air pressure inside the test chamber. At the same time, the coordinated design of the lifting ring 106 and the damping hinge 3 not only meets the portable transportation requirements of the device, but also ensures the precise alignment of the sealing surface during opening and closing, avoiding the risk of leakage caused by misalignment of the sealing surface, and further ensuring the convenience of the entire device and the accuracy of the test results.

[0021] like Figures 1 to 5As shown, the airtightness testing component 5 includes a miniature vacuum pump 501, a mounting base 502, an exhaust valve pipe 503, and an airtightness tester 504. The mounting base 502 is located at the end of the miniature vacuum pump 501 closest to the testing chamber 1, and the exhaust valve pipes 503 are symmetrically installed on the left and right sides of the end of the miniature vacuum pump 501 furthest from the mounting base 502. The airtightness tester 504 is mounted on the top of the miniature vacuum pump 501. Four sets of holes for bolt installation are arranged in a circular array at the connection between the mounting base 502 and the testing chamber 1. The exhaust valve pipe 503 is designed for manual adjustment. The linkage design between the miniature vacuum pump 501 and the airtightness tester 504 enables automated control of the testing process. At the start of the test, the miniature vacuum pump 501, rigidly connected to the testing chamber 1 via the mounting base 502, stably draws air from the testing chamber, creating a negative pressure. In this environment, the exhaust valve pipe 503 is closed to ensure the vacuum level is maintained. The airtightness detector 504 monitors the pressure changes inside the chamber in real time and feeds the data back to the control panel 103. The operator can observe the pressure value through the control panel 103 to judge the sealing performance of the power cable terminal accessories. When a leak is detected, the airtightness detector 504 will issue an alarm to prompt the operator to conduct further inspection. At the same time, the manual adjustment structure of the exhaust valve pipe 503 allows the operator to flexibly adjust the pressure relief rate according to the material characteristics of the accessories, avoiding damage to the accessories or inaccurate test data due to excessive pressure relief. This design not only improves the testing efficiency but also ensures the reliability of the test results. Compared with the traditional manual testing method, the automated testing process of this device reduces human error, improves data repeatability, and makes the test results more accurate and reliable.

[0022] In summary, as Figures 1 to 5 As shown, the sealing test device for the finished product of the power cable terminal accessory processing requires the operator to first check whether each part of the device is intact, and ensure that the test box 1, box cover 2, clamping assembly 4 and airtightness test assembly 5 are undamaged and securely connected. Next, according to the specifications and shape of the power cable terminal accessory to be tested, the position of the elastic gripper 403 in the clamping assembly 4 on the first guide rail 401 and the second guide rail 402 is adjusted so that the elastic gripper 403 can accurately and gently clamp the accessory. Then, the limiting bolt 404 is rotated to fix the elastic gripper 403 and prevent it from moving during the test. Next, the lid 2 is closed onto the test box 1 using the damping hinge 3. It is initially fixed by the spring lock 105 and the locking hook 202. Then, the fastening bolt 205 is rotated to make it threadedly connected to the first mating ear 104, thus completing the sealing of the box and ensuring that the first sealing ring 102 and the second sealing ring 203 fit tightly, effectively preventing external humid air and dust from entering the test chamber. Then, the air tightness detection component 5 is started through the control panel 103, the micro vacuum pump 501 starts to work, and through the rigid connection between the fixed base 502 and the detection box 1, it stably draws air from the detection chamber to form a negative pressure environment. At this time, the exhaust valve pipe 503 is in the closed state, and the air tightness detector 504 monitors the pressure change in the chamber in real time and feeds the data back to the control panel 103. Operators can observe the pressure value through the control panel 103. If the pressure value does not change significantly within the specified time, it indicates that the sealing performance of the power cable terminal accessory is good. If a leak is detected, the air tightness detector 504 will sound an alarm, prompting the operator to conduct further inspection. At the same time, the operator can flexibly adjust the pressure relief rate by manually adjusting the exhaust valve pipe 503 according to the material characteristics of the accessory. After the test is completed, first close the air tightness detection component 5 through the control panel 103, then open the fastening bolt 205 and the spring lock 105, remove the cover 2, and remove the tested power cable terminal accessory from the clamping component 4 to complete the entire testing process.

[0023] The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and to design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A sealing performance testing device for finished products used in the processing of power cable terminal accessories, comprising a testing box (1) and a clamping assembly (4), characterized in that: The top of the test box (1) is provided with a box cover (2), and damping hinges (3) are symmetrically installed on the left and right sides of the connection between the test box (1) and the box cover (2). The clamping assembly (4) is installed on the bottom side inside the test box (1), and an airtight test assembly (5) is connected to the lower end of one side of the test box (1). The clamping assembly (4) includes a first guide rail (401), a second guide rail (402), an elastic gripper (403), and a limit bolt (404). The second guide rail (402) is provided on both sides of the middle part of the first guide rail (401), and the elastic gripper (403) is slidably installed on the surface of the first guide rail (401) and the second guide rail (402). The limit bolt (404) is installed on the lower side of the elastic gripper (403) with a horizontal thread.

2. The sealing performance testing device for finished products used in the processing of power cable terminal accessories according to claim 1, characterized in that, The testing box (1) includes a main body (101), a first sealing ring (102), a control panel (103), a first mating lug (104), a spring lock (105), and a lifting ring (106). The first sealing ring (102) is provided at the top edge of the inside of the main body (101), and the control panel (103) is installed on the front surface of the main body (101). The first mating lug (104) is symmetrically arranged on the upper front side of the main body (101), and the spring lock (105) is symmetrically and vertically installed on the top of the left and right sides of the main body (101). At the same time, the lifting ring (106) is installed in the middle of the upper part of the left and right sides of the main body (101).

3. The sealing performance testing device for finished products used in the processing of power cable terminal accessories according to claim 2, characterized in that, The main housing (101) and the first docking ear (104) are integrated into one structure, and the lower end of the damping hinge (3) is connected to the upper rear side of the main housing (101).

4. The sealing performance testing device for finished products used in the processing of power cable terminal accessories according to claim 2, characterized in that, The box cover (2) includes a main cover body (201), a locking hook (202), a second sealing ring (203), a second mating ear (204), and a fastening bolt (205). The main cover body (201) is symmetrically equipped with locking hooks (202) on both the left and right sides. The main cover body (201) is provided with a second sealing ring (203) at the bottom edge of the inside. The main cover body (201) is symmetrically equipped with second mating ears (204) on the lower end of the front surface. The fastening bolt (205) is installed in the middle of the second mating ear (204) with a vertical thread.

5. The sealing performance testing device for finished products used in the processing of power cable terminal accessories according to claim 4, characterized in that, The second docking lug (204) and the main cover (201) are integrally structured together. The lower end of the fastening bolt (205) is threadedly connected to the first docking lug (104). The upper end of the damping hinge (3) is connected to the lower rear end of the main cover (201).

6. The sealing performance testing device for finished products used in the processing of power cable terminal accessories according to claim 1, characterized in that, The first guide rail (401) and the second guide rail (402) are arranged in a cross shape, and the lower end of the elastic gripper (403) is connected to the first guide rail (401) and the second guide rail (402) by a slotted embedded structure.

7. The sealing performance testing device for finished products used in the processing of power cable terminal accessories according to claim 1, characterized in that, The airtightness testing component (5) includes a miniature vacuum pump (501), a fixed base (502), an exhaust valve pipe (503), and an airtightness tester (504). The fixed base (502) is provided at one end of the miniature vacuum pump (501) near the test box (1), and the exhaust valve pipe (503) is symmetrically installed on the left and right sides of the end of the miniature vacuum pump (501) away from the fixed base (502). The airtightness tester (504) is installed on the top of the miniature vacuum pump (501).

8. The sealing performance testing device for finished products used in the processing of power cable terminal accessories according to claim 7, characterized in that, The connection between the fixed base (502) and the detection box (1) is provided with four sets of holes in a ring array for bolt installation.

9. A sealing performance testing device for finished products used in the processing of power cable terminal accessories according to claim 8, characterized in that, The exhaust valve pipe (503) adopts a manually adjustable structure.

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