A combined low voltage drawer quick test plug

Abstract

The utility model discloses a combined low pressure drawer quick test plug, it includes through the cable connection's dynamic plug subassembly, switch module and power component, switch module includes normally closed switch and normally open switch, and dynamic plug subassembly includes two or more dynamic plugs, and each dynamic plug all includes the shell, and the one end of shell has the gap for the static plug on low pressure drawer and inserts, and the shell is equipped with the insertion slot of the static plug on low pressure drawer and the consistent insertion and mounting cooperation in, and the other end of shell is equipped with two interval setting's recess, and the shell is equipped with two interval setting's metal sheet, and the one end of two metal sheets is gradually close from the inside to the outside of shell, and is used for with the contact of static plug on low pressure drawer, and the other end of two metal sheets all are from the shell and are fixed in two recesses through the compression bolt respectively, and the end of cable is equipped with the U -shaped joint of dynamic plug connection, and U -shaped joint is used for clamping on the bolt column of compression bolt and is compressed on the metal sheet by the compression bolt's nut.

Description

Technical Field

[0001] This utility model relates to a combined low-voltage drawer quick test plug, belonging to the technical field of electrical testing equipment. Background Technology

[0002] In the commissioning and maintenance of low-voltage drawer-type switchgear in petrochemical, power, and industrial automation fields, it is necessary to check and test the function of the low-voltage drawer circuits using different wiring methods. Current technology for testing low-voltage drawer-type switchgear circuits, lacking compatible plugs, involves manually connecting copper wires directly to the wiring bolts of the drawer switchgear using a screwdriver. This separate wiring for each circuit requires repeated disconnection and reconnection, resulting in low efficiency, a high rate of incorrect connections, and cumbersome operation, increasing manual labor costs and hindering economic benefits. Furthermore, this wiring method exposes bare copper wires, posing a risk of electric shock, and the lack of internal protective measures inside the low-voltage drawer presents safety hazards. Utility Model Content

[0003] The purpose of this utility model is to provide a combined low-pressure drawer quick test plug to solve the technical problems of cumbersome operation and high safety risks associated with the use of copper terminal wiring in the prior art.

[0004] This utility model adopts the following technical solution: a combined low-pressure drawer quick test plug, which includes a moving plug assembly, a switch module and a power supply assembly connected by a cable. The switch module includes a normally closed switch and a normally open switch. The moving plug assembly includes two or more moving plugs. Each moving plug includes a housing. One end of the housing has a notch for inserting a stationary plug on the low-pressure drawer. The housing has a slot for fitting and engaging with the stationary plug on the low-pressure drawer. The other end of the housing has two spaced grooves. The housing has two spaced metal plates. One end of the two metal plates gradually approaches from the inside to the outside of the housing and is used to contact the stationary plug on the low-pressure drawer. The other ends of the two metal plates both protrude from the housing and are respectively fixed in the two grooves by clamping bolts. The end of the cable has a U-shaped connector connected to the moving plug. The U-shaped connector is used to engage with the bolt post of the clamping bolt and is pressed against the metal plate by the nut of the clamping bolt.

[0005] Each plug is arranged in parallel and connected together by a fastener, which is a fastener sleeve or tape.

[0006] The outer shell has two grooves arranged vertically, with downward-sloping surfaces inside the grooves.

[0007] The housing has mounting slots for placing metal sheets.

[0008] The housing of the moving plug has a partition on the outside of the groove, and the partition is connected to the housing together.

[0009] The switch module includes a switch box and a red button and a green button mounted on the switch box. The normally closed switch and the normally open switch are contact switches installed inside the switch box. The contacts of the normally closed switch are connected to the red button, and the contacts of the normally open switch are connected to the green button.

[0010] The power supply assembly includes a three-prong power plug.

[0011] The cable is a copper core polyvinyl chloride insulated and sheathed flexible cable.

[0012] The cable has a number tube fitted at one end with a U-shaped connector.

[0013] Both the metal sheet and the U-shaped connector are made of copper.

[0014] The beneficial effects of this utility model are as follows: This utility model features a standardized moving plug. During wiring, the U-shaped connector is inserted between the clamping bolt and the metal plate, and tightening the clamping bolt achieves rapid wiring. After the cable is connected to the moving plug, the moving plug is inserted into the stationary plug of the low-voltage drawer. The stationary plug enters through the notch in the moving plug housing and is inserted into the slot inside the housing. The stationary plug contacts the metal plate to achieve conductivity. After the cable is connected to the power supply, the circuit test of the low-voltage drawer can be performed. This utility model's combined low-voltage drawer quick test plug eliminates the need for manual wiring directly on the low-voltage drawer. The cable can be pre-connected to the moving plug, and then the moving plug is inserted into the stationary plug of the low-voltage drawer, thus avoiding direct wiring on the low-voltage drawer. Therefore, it eliminates potential risks caused by wiring errors, shortens test time, reduces labor costs, and increases economic benefits. At the same time, this wiring method is safer and can effectively prevent safety accidents during the test.

[0015] Therefore, the combined low-voltage drawer quick-test plug of this utility model has strong versatility, can flexibly expand the number of moving plugs, is suitable for various electrical testing industries, can optimize the testing process, improve the simplicity and safety of the test, reduce labor input, and is conducive to improving economic efficiency. The combined low-voltage drawer quick-test plug of this utility model has a simple structure, small size, and is easy to maintain and carry. This utility model is applicable to multiple fields such as petrochemicals, power plants, metallurgy, and coal mines, and can meet the testing needs of 8PT drawer-type equipment.

[0016] Preferably, the various moving plugs are connected together by fasteners, making the combined low-voltage drawer quick test plug more convenient to carry and further improving insulation performance.

[0017] Preferably, the beveled surface on the outer casing groove can support the metal sheet, facilitating the quick connection of the U-shaped connector.

[0018] Preferably, the partition in the recess of the housing separates the U-shaped connectors connecting two adjacent moving plugs, improving the safety of use.

[0019] Preferably, the switch module adopts the form of a contact switch, and the circuit is started and stopped by pressing the red button or the green button.

[0020] Preferably, the three-prong power plug can be connected to a power source, which can be a mains power supply circuit or a battery.

[0021] Preferably, the connected cables can be identified by setting up identification tags using number tubes.

[0022] Preferably, the metal sheet and U-shaped connector are made of copper, which has good conductivity and ensures reliable use. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of a combined low-pressure drawer quick test plug according to an embodiment of the present invention; Figure 2 yes Figure 1 Schematic diagram of the active plug assembly; Figure 3 yes Figure 2 Enlarged view of the two moving plugs; Figure 4 yes Figure 2 Internal diagram of the active plug; Figure 5 yes Figure 2 A plan view of the intermediate-range plug; Figure 6 yes Figure 2 A schematic diagram of a U-shaped connector; Figure 7 yes Figure 1 A schematic diagram of the circuit connections of each component.

[0024] In the diagram: 1-Dynamic plug, 1.1-Shell, 1.2-Notch, 1.3-Slot, 1.4-Metal plate, 1.5-Groove, 1.6-Clamping bolt, 1.7-Partition, 2-Switch module, 2.1-Normally closed switch, 2.2-Normally open switch, 2.3-Switch box, 2.4-Red button, 2.5-Green button, 3-Cable, 3.1-U-shaped connector, 3.2-Number tube, 4-Three-hole power plug. Detailed Implementation

[0025] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0026] like Figure 1As shown, a combined low-voltage drawer quick test plug according to an embodiment of the present invention includes a moving plug assembly, a switch module 2, and a power supply assembly connected by a cable 3. The switch module 2 includes a normally closed switch 2.1 and a normally open switch 2.2. The moving plug assembly includes two or more moving plugs 1, each moving plug 1 including a housing 1.1. One end of the housing 1.1 has a notch 1.2 for inserting a stationary plug on the low-voltage drawer. The housing 1.1 has a slot 1.3 inside for fitting and engaging with the stationary plug on the low-voltage drawer. The other end of the housing 1.1 has two spaced-apart grooves 1.5. The housing 1.1 has two spaced-apart metal pieces 1.4 inside. One end of the two metal pieces 1.4 gradually approaches from the inside to the outside of the housing and is used to contact the stationary plug on the low-voltage drawer. The other ends of the two metal pieces 1.4 both protrude from the housing 1.1 and are respectively fixed in the two grooves 1.5 by clamping bolts 1.6. The two grooves 1.5 on the housing 1.1 are arranged vertically, and the grooves 1.5 have downward sloping surfaces. The housing has a mounting groove for placing the metal sheet 1.4. The housing of the movable plug 1 has a partition 1.7 located outside the groove 1.5, and the partition 1.7 is connected to the housing 1.1 together.

[0027] The cable 3 has a U-shaped connector 3.1 at one end that connects to the plug 2. The U-shaped connector 3.1 engages with the bolt post of the clamping bolt 1.6 and is pressed against the metal plate 1.4 by the nut of the clamping bolt 1.6. Both the metal plate 1.4 and the U-shaped connector 3.1 are made of copper. A number tube 3.2 is fitted onto one end of the cable 3 with the U-shaped connector 3.1 for identification. The cable 3 is a copper-core, polyvinyl chloride-insulated, sheathed flexible cable, and the core wires are identified by color or number. The power supply assembly includes a three-prong power plug 4, one end of which connects to the cable 3, and the other end connects to a power source, which can be a mains power supply circuit or a battery.

[0028] To facilitate the overall movement and storage of the moving plugs, each moving plug is arranged side by side and connected together by fasteners (not shown in the attached diagram). The fasteners are fastening sleeves or tapes, which also improves the insulation performance of the moving plugs during the experiment and further enhances the safety during use.

[0029] The switch module includes a switch box 2 and a red button 2.4 and a green button 2.5 mounted on the switch box 2. The normally closed switch 2.1 and the normally open switch 2.2 are contact switches installed inside the switch box 2. The contacts of the normally closed switch 2.1 are connected to the red button 2.4, and the contacts of the normally open switch 2.2 are connected to the green button 2.5. In the switch module, the switch box is an explosion-proof box, and the normally open / normally closed contacts adopt a quick-release snap-fit ​​structure, which can be quickly replaced to adapt to different voltage level requirements.

[0030] This utility model features a standardized moving plug. During wiring, the U-shaped connector is inserted between the clamping bolt and the metal plate, and tightening the clamping bolt achieves rapid wiring. After connecting the cable to the moving plug, the moving plug is inserted into the stationary plug of the low-voltage drawer. The stationary plug enters through the notch in the moving plug housing and is inserted into the slot inside the housing. The stationary plug contacts the metal plate to achieve conductivity. After connecting the cable to the power supply, a circuit test of the low-voltage drawer can be performed. After the cable is connected to the moving plug, the moving plug can be labeled, such as start terminal, power terminal, signal terminal, etc., to achieve quick connection with the low-voltage drawer. An example wiring method is as follows: Figure 7 As shown, the cable connected to one of the movable plugs is a signal line, and the movable plug is a signal terminal; the movable plug connected to the power supply is a power terminal, and the movable plug connected to the switch box is a start terminal. Figure 7 The circuit in the circuit can perform the following protection test functions: 1) thermal overload protection and current imbalance protection; 2) undervoltage / overvoltage protection; 3) locked rotor protection + instantaneous trip protection; 4) single-phase grounding protection.

[0031] This utility model's modular low-voltage drawer quick-test plug eliminates the need for manual wiring directly onto the low-voltage drawer. The cable can be pre-connected to the moving plug, and then the moving plug is inserted into the stationary plug of the low-voltage drawer. This avoids direct wiring onto the low-voltage drawer, thus eliminating potential risks caused by wiring errors, shortening test time, reducing labor costs, and increasing economic efficiency. Simultaneously, this wiring method is safer, effectively preventing safety accidents during testing. Overall, this utility model's modular low-voltage drawer quick-test plug is highly versatile, allowing for flexible expansion of the number of moving plugs, and is suitable for various electrical testing industries. It optimizes the testing process, improving the simplicity and safety of testing. This utility model's modular low-voltage drawer quick-test plug has a simple structure, small size, and is easy to maintain and carry.

[0032] This invention enables rapid setup and integration of test circuits through cooperation with a low-voltage drawer, ensuring electrical protection while simultaneously integrating status monitoring, signal transmission, and local control capabilities to form a complete low-voltage testing solution. This significantly improves the safety, efficiency, and maintainability of low-voltage testing, making it suitable for complex testing environments in industrial equipment, power systems, and other scenarios. This invention effectively solves the problems of low wiring efficiency and significant safety hazards in existing low-voltage drawer cabinet testing technologies, increasing testing efficiency by over 70%.

Claims

1. A combined low-voltage drawer quick-test plug, characterized in that: It includes a moving plug assembly, a switch module, and a power supply assembly connected by a cable. The switch module includes a normally closed switch and a normally open switch. The moving plug assembly includes two or more moving plugs, each of which includes a housing. One end of the housing has a notch for inserting a stationary plug on a low-voltage drawer. The housing has a slot for fitting and engaging with the stationary plug on the low-voltage drawer. The other end of the housing has two spaced-apart grooves. The housing has two spaced-apart metal plates. One end of the two metal plates gradually approaches the housing from the inside to the outside and is used to contact the stationary plug on the low-voltage drawer. The other ends of the two metal plates protrude from the housing and are respectively fixed in the two grooves by clamping bolts. The end of the cable has a U-shaped connector for connecting to the moving plug. The U-shaped connector is used to engage with the bolt post of the clamping bolt and is pressed against the metal plate by the nut of the clamping bolt.

2. The combined low-voltage drawer quick test plug according to claim 1, characterized in that: Each plug is arranged in parallel and connected together by a fastener, which is a fastener sleeve or tape.

3. The combined low-voltage drawer quick test plug according to claim 1, characterized in that: The outer shell has two grooves arranged vertically, with downward-sloping surfaces inside the grooves.

4. The combined low-voltage drawer quick test plug according to claim 1, characterized in that: The housing has mounting slots for placing metal sheets.

5. The combined low-voltage drawer quick test plug according to claim 1, characterized in that: The housing of the moving plug has a partition on the outside of the groove, and the partition is connected to the housing together.

6. The combined low-voltage drawer quick test plug according to claim 1, characterized in that: The switch module includes a switch box and a red button and a green button mounted on the switch box. The normally closed switch and the normally open switch are contact switches installed inside the switch box. The contacts of the normally closed switch are connected to the red button, and the contacts of the normally open switch are connected to the green button.

7. The combined low-voltage drawer quick test plug according to claim 1, characterized in that: The power supply assembly includes a three-prong power plug.

8. The combined low-voltage drawer quick test plug according to claim 1, characterized in that: The cable is a copper core polyvinyl chloride insulated and sheathed flexible cable.

9. The combined low-voltage drawer quick test plug according to claim 1, characterized in that: The cable has a number tube fitted at one end with a U-shaped connector.

10. The combined low-voltage drawer quick test plug according to claim 1, characterized in that: Both the metal sheet and the U-shaped connector are made of copper.

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