Partial discharge withstand voltage integrated test tool for prefabricated separated cable terminal

Abstract

The utility model relates to a partial discharge withstand voltage integrated test tool for a prefabricated separated cable terminal. The partial discharge withstand voltage integrated test tool comprises a cabinet body; the lifting mechanism is used for realizing automatic lifting of the plug, so that the plug can be butted with the female port of the cable terminal; the grounding assembly is used for ensuring the grounding safety of the tool; the bus assembly is used for connecting the plug with the voltage regulator to realize voltage transmission; the voltage regulator is used for testing voltage; the plug is used for being connected with a female port of the cable terminal and carrying out partial discharge and voltage withstanding tests; the base is used for fixing the cable terminal; the utility model has the advantages that the labor cost is saved, a large number of prefabricated separated cable terminals can be tested at the same time each time, the efficiency is high, compared with manual operation and automatic operation equipment, the service life is longer, the efficiency of enterprises is improved, and the cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a prefabricated separation type cable terminal's partial discharge voltage withstanding integrated test tool belongs to electrical equipment technical field. BACKGROUND

[0002] The prefabricated separable cable terminal is a plug for facilitating cable line in and out, in order to ensure the safety and stability of equipment, partial discharge test and voltage withstand test need to be carried out before the equipment leaves the factory. In the traditional test, the cable is connected with the inner core of the double-pass sleeve, then the mounting port of the connector is installed on the double-pass sleeve of the test device, the stress cone is installed on the wiring port, the cable copper ear is locked, finally the mounting plug is installed on the female port and locked, after the test, the plug is removed from the female port, the screw of the cable head copper ear is unlocked on the double-pass sleeve, the stress cone of the wiring port is removed, finally the connector is removed from the mounting port. The traditional voltage withstand test is manually operated, at least two people need to operate cooperatively and a large amount of time is consumed for each test, the efficiency is low, which cannot meet the increasing demand for supply, and the cable, double-pass sleeve and plug are easily damaged after multiple installation and removal. SUMMARY

[0003] In order to overcome the defects of the prior art, the utility model provides a prefabricated separation type cable terminal's partial discharge voltage withstanding integrated test tool, and the technical scheme of the utility model is:

[0004] A prefabricated separation type cable terminal's partial discharge voltage withstanding integrated test tool, comprising:

[0005] A cabinet body, a lifting mechanism for automatically lifting the plug to facilitate the butt joint of the plug and the female port of the cable terminal, a grounding assembly for ensuring the grounding safety of the tool, a busbar assembly for connecting the plug and the voltage regulator to realize the transmission of voltage, the voltage regulator is used for testing voltage, and further comprising a partial discharge testing instrument for monitoring the partial discharge condition, the plug is used for connecting with the female port of the cable terminal to perform partial discharge and voltage withstand test, and a base for fixing the cable terminal.

[0006] The lifting mechanism comprises a cylinder, a guide shaft, a bearing, a lifting plate, a top plate and a bottom plate, the bottom plate is installed on the base, the top plate is located at the upper portion of the bottom plate, is arranged in parallel with the bottom plate and forms a spacing, the guide shaft is installed between the top plate and the bottom plate, the lifting plate is slidably installed on the guide shaft through the bearing, the cylinder is arranged in the vertical direction, the cylinder is installed on the top plate, the telescopic rod of the cylinder is connected with the lifting plate, and the plug is installed on the lifting plate.

[0007] The grounding assembly comprises a grounding link and a grounding row, the grounding link is used for connecting the grounding row and the cabinet body to realize electrical connection, the grounding row is used for providing a grounding point and being connected with an external grounding system through a wire, and the grounding link is fixedly installed on the cabinet body by means of bolting or welding.

[0008] The busbar assembly comprises a horizontal row used for horizontal power transmission and connected with a plurality of plugs, and a vertical row installed on the upper part of the horizontal row and electrically connected with the horizontal row, the vertical row is used for vertical power transmission and is connected with a voltage regulator and a partial discharge testing instrument.

[0009] The base comprises a lower base installed on the cabinet body and an upper base installed on the lower base and used for mounting and dismounting cable terminals, and a mounting groove is arranged on the upper base.

[0010] The upper base is detachably installed on the lower base.

[0011] The cabinet body comprises a workbench used as an operation platform of a tooling and used for placing and fixing the base, a front bottom beam used as a bottom support of the tooling and connected with the workbench to provide lateral stability, a rear bottom beam used as a bottom support of the tooling and connected with the workbench and opposite to the front bottom beam to jointly provide bottom stability, a side beam used as a lateral support of the tooling and connected with the workbench to provide lateral stability, and a partition plate installed on the cabinet body, and the grounding link is fixedly installed on the partition plate by means of bolting or welding.

[0012] The cabinet body is made of aluminum alloy.

[0013] The cabinet body is made of aluminum alloy.

[0014] The cabinet body is made of aluminum alloy.

[0015] The cabinet body is made of aluminum alloy.

[0016] The cabinet body is made of aluminum alloy.

[0017] The cabinet body is made of aluminum alloy.

[0018] The cabinet body is made of aluminum alloy.

[0019] Maintenance convenience: the detachable design of the upper base facilitates the installation and removal of the cable terminal, and also facilitates the maintenance and repair of the tooling.

[0020] Good stability: the design of the front bottom beam, rear bottom beam and side beam provides good lateral and bottom stability, ensuring the stability of the tooling during the test.

[0021] Strong protection: the installation groove of the stress cone is designed on the upper base, which helps to protect the cable terminal during the test and prevent it from being damaged.

[0022] Multifunctionality: the integration of the pressure regulator and the partial discharge testing instrument enables the tooling to not only perform pressure resistance tests, but also monitor partial discharge, improving the comprehensiveness of the test.

[0023] Cost-effective: the automation and high efficiency design reduces labor costs and time costs, which helps to reduce the operating costs of enterprises in the long run.

[0024] In summary, the utility model has the advantages of saving labor costs, testing a large number of prefabricated separated cable terminals at a time, high efficiency, longer service life of the automatic operation equipment compared with manual operation, and is beneficial to improving the efficiency and reducing the cost of enterprises. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a schematic view of the main structure of the utility model.

[0026] Figure 2 is a side view of Figure 1 .

[0027] Figure 3 is a schematic view of the pressure regulator and the partial discharge testing instrument of the utility model. DETAILED DESCRIPTION

[0028] The advantages and characteristics of the utility model will be clearer with the description. However, these examples are only exemplary and do not constitute any limitation on the scope of the utility model. Those skilled in the art should understand that the details and forms of the technical solutions of the utility model can be modified or replaced without deviating from the spirit and scope of the utility model, and such modifications and replacements all fall within the protection scope of the utility model.

[0029] Referring to Figures 1 to 3 , the utility model relates to a partial discharge and pressure resistance integrated test tooling for prefabricated separated cable terminals, which comprises:

[0030] a cabinet body 1;

[0031] Lifting mechanism 2 for automatic lifting of the plug 5 to facilitate the connection of the plug 5 with the female port of the cable terminal;

[0032] Grounding assembly 3 to ensure the grounding safety of the tooling;

[0033] Busbar assembly 4 for connecting the plug 5 with the voltage regulator 8 to realize the transmission of current; the voltage regulator 8 is used for testing voltage, and also includes a partial discharge testing instrument 9 for monitoring the partial discharge condition (the partial discharge testing instrument 9 is installed at the test site);

[0034] Plug 5 for connecting with the female port of the cable terminal to conduct partial discharge and withstand voltage test;

[0035] Base 6 for fixing the cable terminal;

[0036] The lifting mechanism 2 includes a cylinder 2.1, a guide shaft 2.2, a bearing 2.3, a lifting plate 2.4, a top plate 2.5 and a bottom plate 2.6, the bottom plate 2.6 is installed on the base 6, the top plate 2.5 is located on the upper part of the bottom plate 2.6 and is arranged in parallel with the bottom plate 2.6 with a spacing, the guide shaft 2.2 is installed between the top plate 2.5 and the bottom plate 2.6, the lifting plate 2.4 is slidably installed on the guide shaft 2.2 through the bearing 2.3, the cylinder 2.1 is arranged in the vertical direction, the cylinder 2.1 is installed on the top plate 2.5, the telescopic rod of the cylinder is connected with the lifting plate 2.4, and the plug 5 is installed on the lifting plate 2.4.

[0037] Based on the above structure, the following advantages are achieved;

[0038] Automatic operation: the automatic lifting function of the lifting mechanism 2 reduces manual intervention, improves the automation level of the test, and thus improves the convenience and efficiency of the operation.

[0039] Improved safety: the grounding assembly 3 ensures the grounding safety of the tooling during high voltage test, effectively preventing electrical accidents.

[0040] Multifunctional integration: the busbar assembly 4 is not only used for power transmission, but also integrated with the connection of the voltage regulator 8 and the partial discharge testing instrument 9, so that the tooling can simultaneously conduct voltage test and partial discharge monitoring, improving the comprehensiveness and accuracy of the test.

[0041] Easy operation: the connection process of the plug 5 with the female port of the cable terminal is automatically completed by the lifting mechanism 2, simplifying the operation process and reducing the operation difficulty.

[0042] Enhanced stability: the base 6 is used to fix the cable terminal, ensuring the stability of the cable terminal during the test and reducing the test errors caused by poor contact or movement.

[0043] Improved efficiency: The automated lifting mechanism 2 and integrated test equipment allow for rapid completion of partial discharge and withstand voltage tests on multiple cable terminals, improving test efficiency.

[0044] The grounding assembly 3 includes a grounding link 3.1 and a grounding bar 3.2. The grounding link 3.1 is used to connect the grounding bar 3.2 and the cabinet 1, achieving electrical connection. The grounding bar 3.2 is used to provide a grounding point and is connected to an external grounding system through a wire. The grounding link 3.1 is fixedly installed on the cabinet 1 by bolting or welding.

[0045] The structure of the grounding assembly 3 has the following advantages:

[0046] Safety is ensured: The design of the grounding assembly 3 provides a reliable grounding point, ensuring that the leakage current generated during high voltage tests can be promptly discharged, preventing electrical breakdown and fire accidents, and ensuring the safety of operators and equipment.

[0047] Improved stability: The fixed installation of the grounding link 3.1 and the cabinet 1, whether by bolting or welding, ensures the stability of the grounding assembly 3 during testing, reducing the risk of poor grounding due to vibration or impact.

[0048] Easy to install and maintain: The design of the grounding link 3.1 and the grounding bar 3.2 allows for quick installation and disassembly, facilitating maintenance and repair. This modular design also allows for easy replacement of the grounding assembly 3 when needed.

[0049] Enhanced compatibility: The grounding bar 3.2 is connected to an external grounding system through a wire, making the tool compatible with different grounding systems and improving its versatility and applicability.

[0050] The busbar assembly 4 includes a horizontal row 4.1 for horizontal power transmission connected to multiple plugs 5, and a vertical row 4.2 installed on the upper part of the horizontal row 4.1 and electrically connected to the horizontal row 4.1. The vertical row 4.2 is used for vertical power transmission and is connected to the voltage regulator 8 and the partial discharge test instrument 9.

[0051] The structure of the busbar assembly 4 has the following advantages:

[0052] Efficient power transmission: The design of the horizontal row 4.1 and the vertical row 4.2 allows efficient transmission of power from the voltage regulator 8 and the partial discharge test instrument 9 to each plug 5, ensuring stable power supply during testing.

[0053] Clear layout: The layout of the horizontal row 4.1 and the vertical row 4.2 is clear, facilitating installation and maintenance, as well as checking and monitoring the status of power transmission.

[0054] Modular design: The modular design of the busbar assembly 4 allows individual parts to be replaced or upgraded independently, improving the flexibility and scalability of the tooling.

[0055] Reduced energy loss: The busbar design can reduce the loss of electrical energy during transmission, improving energy utilization efficiency.

[0056] Improved test efficiency: The design of the busbar assembly 4 allows simultaneous electrical energy transmission to multiple plugs 5, thereby improving test efficiency, especially when a large number of cable terminals need to be tested.

[0057] Easy integration: The design of the vertical row 4.2 facilitates integration with the voltage regulator 8 and the partial discharge test instrument 9, making the connection of the entire test system more compact and efficient.

[0058] Improved reliability: The design of the busbar assembly 4 improves the reliability of the entire test system, as it reduces the number of electrical connection points, thereby reducing the likelihood of failure.

[0059] The base 6 includes a lower base 6.1 mounted on the cabinet 1;

[0060] An upper base 6.2 mounted on the lower base 6.1 for mounting and dismounting cable terminals; an installation slot is provided on the upper base 6.2 for fixing the stress cone 7. The upper base 6.2 is detachably mounted on the lower base 6.1.

[0061] The design of the base 6 achieves the following advantages:

[0062] Increased stability: The lower base 6.1 is fixed on the cabinet 1, providing stable support for the upper base 6.2 and the cable terminals, ensuring stability during testing.

[0063] Easy installation and dismounting: The design of the upper base 6.2 allows quick installation and dismounting of cable terminals, which improves test efficiency, especially when cable terminals need to be frequently replaced.

[0064] Protecting cable terminals: The design of the stress cone installation slot helps to fix the stress cone 7, thereby protecting the cable terminals during testing, reducing the risk of mechanical damage and electrical failure.

[0065] The cabinet 1 includes a workbench 1.1 as an operating platform of the tooling, used for placing and fixing the base 6; a front bottom beam 1.2 as a bottom support of the tooling, connected with the workbench 1.1, providing lateral stability; a rear bottom beam 1.3 as a bottom support of the tooling, connected with the workbench 1.1, opposite to the front bottom beam 1.2, together providing bottom stability; a side beam 1.4 as a lateral support of the tooling, connected with the workbench 1.1, providing lateral stability; a partition plate 1.5 installed on the cabinet 1, and the grounding link 3.1 is fixedly installed on the partition plate 1.5 by bolting or welding. The combination of the workbench 1.1, the front bottom beam 1.2, the rear bottom beam 1.3 and the side beam 1.4 provides a stable frame, ensuring the stability of the entire tooling during operation. The partition plate 1.5 provides a fixing point for the grounding link 3.1, and also provides protection and support for the internal components of the tooling, facilitating maintenance and repair. The material of the cabinet 1 is aluminum alloy.

[0066] The working principle of the utility model is:

[0067] Step one: preparation

[0068] The installation port of the prefabricated split cable terminal is sequentially placed on the lower base 6.1 of the base 6. The base 6 provides a stable platform for fixing the cable terminal.

[0069] Step two: install stress cone

[0070] The stress cone 7 is inserted into the wiring port of the prefabricated split cable terminal. The stress cone installation groove on the upper base 6.2 is used to fix the stress cone 7, ensuring the protection of the cable terminal during the test.

[0071] Step three: grounding operation

[0072] The grounding link 3.1 is pressed against the appropriate position of the prefabricated split cable terminal, the shielding ground wire is connected and reliably grounded. The grounding assembly 3 ensures electrical safety during the test.

[0073] Step four: butt plug

[0074] Lower the lifting mechanism 2 until the plug 5 on the lifting plate is inserted into the female port of the prefabricated split cable terminal and fixed on the cabinet 1. The air cylinder 2.1 controls the up and down movement of the lifting plate 2.4, realizing the automatic butt joint of the plug 5 and the cable terminal.

[0075] Step five: withstand voltage test

[0076] Start the voltage regulator 8 to output a voltage of 42KV-48KV for withstand voltage test of the cable terminal, and turn off after 1 minute. The voltage regulator 8 is used to provide high voltage required for testing.

[0077] Step six: partial discharge test

[0078] Debugging partial discharge test instrument 9, connect the signal line, start the voltage regulator 8, output 15.6KV voltage, carry out partial discharge test, turn off after 1 minute. Partial discharge test instrument 9 is used to monitor the partial discharge during the test.

[0079] Step seven: result judgment and subsequent operation

[0080] After the test, check whether the cable terminal appears breakdown and whether the partial discharge is ≤10pC. If the product is qualified, raise the lifting mechanism 2, take off the stress cone 7, take off the prefabricated separated cable terminal from the base 6, and prepare to test the next batch of products.

[0081] If breakdown occurs, also raise the lifting mechanism 2, take off the stress cone 7, and take off the defective cable terminal from the base 6, pick out and further check or handle.

[0082] Through the above steps, the test tool of the utility model can automatically, efficiently and safely complete the partial discharge withstand voltage test of the prefabricated separated cable terminal, and ensures the accuracy and reliability of the test. At the same time, the automatic design reduces manual operation, reduces labor intensity, and improves production efficiency.

[0083] The above is only the preferred specific implementation mode of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art in the technical range disclosed by the utility model, according to the technical scheme and the utility model concept of the utility model, carries out equivalent replacement or change, should be covered in the protection scope of the utility model.

Claims

1. A prefabricated partial discharge voltage-withstand integrated test tooling for a separate cable terminal, characterized by, The utility model relates to a cable terminal test device, which comprises the following components: a cabinet body; a lifting mechanism for automatically lifting the plug to facilitate the butt joint of the plug and the female port of the cable terminal; a grounding assembly for ensuring the grounding safety of the tooling; a busbar assembly for connecting the plug and the voltage regulator to realize the transmission of voltage; the voltage regulator is used for testing voltage, and further comprises a partial discharge testing instrument for monitoring the partial discharge condition; a plug for connecting with the female port of the cable terminal to carry out partial discharge and voltage withstand tests; a base for fixing the cable terminal; the lifting mechanism comprises a cylinder, a guide shaft, a bearing, a lifting plate, a top plate and a bottom plate, the bottom plate is installed on the base, the top plate is located on the upper portion of the bottom plate, is arranged in parallel with the bottom plate and forms a spacing, the guide shaft is installed between the top plate and the bottom plate, the lifting plate is slidably installed on the guide shaft through the bearing, the cylinder is arranged in the vertical direction, the cylinder is installed on the top plate, the telescopic rod of the cylinder is connected with the lifting plate, and the plug is installed on the lifting plate.

2. The prefabricated partial discharge withstanding integrated test tooling for the cable terminal according to claim 1, characterized in that, the grounding assembly comprises a grounding link and a grounding row, the grounding link is used for connecting the grounding row and the cabinet body to realize electrical connection; the grounding row is used for providing a grounding point and is connected with an external grounding system through a wire; and the grounding link is fixedly installed on the cabinet body through bolt connection or welding.

3. The partial discharge withstanding integrated test tooling for prefabricated separate cable termination according to claim 1 or 2, characterized in that, the busbar assembly comprises: a horizontal row for horizontal power transmission and connected with a plurality of plugs; a vertical row installed on the upper portion of the horizontal row and electrically connected with the horizontal row, used for vertical power transmission and connected with the voltage regulator and the partial discharge testing instrument.

4. The partial discharge withstanding integrated test tooling for prefabricated separate cable termination of claim 3, wherein, the base comprises: a lower base installed on the cabinet body; an upper base installed on the lower base and used for installing and dismounting the cable terminal; an installation groove is arranged on the upper base.

5. The prefabricated partial discharge withstanding integrated test tooling for the cable termination according to claim 4, characterized in that, the upper base is detachably installed on the lower base.

6. The partial discharge withstanding integrated test tooling for prefabricated separate cable termination of claim 2, wherein, the cabinet body comprises a workbench as an operation platform of the tooling and used for placing and fixing the base; a front bottom beam as a bottom support of the tooling, connected with the workbench and providing lateral stability; a rear bottom beam as a bottom support of the tooling, connected with the workbench, opposite to the front bottom beam and providing bottom stability together; a side beam as a lateral support of the tooling, connected with the workbench and providing lateral stability; a partition plate installed on the cabinet body, and the grounding link is fixedly installed on the partition plate through bolt connection or welding.

7. The partial discharge withstanding integrated test tooling for prefabricated separate cable termination of claim 6, wherein, the cabinet body is made of aluminum alloy.

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