Portable intelligent high-voltage test power box

Abstract

The invention relates to the field of power equipment test devices, in particular to a portable test power box. A portable intelligent high-voltage test power box comprises a box body capable of being opened, a first partition plate arranged in the box body and an electric appliance element installed in an inner cavity of the box body, the side wall of the box body is provided with a wire inlet anti-explosion plug and a wire outlet anti-explosion plug, and the inner wall of the box body is provided with a zero connecting bar and a grounding bar; the electrical apparatus elements comprise a power switch, a secondary knife switch, a travel switch, a switch-off lamp, a switch-on lamp, a voltmeter and an overload automatic tripping device, and the power switch controls on and off of a power supply; and a voltage monitoring loop, a primary loop and a secondary loop are formed among the secondary disconnecting link, the travel switch, the opening lamp, the closing lamp, the voltmeter, the overload automatic tripping device, the wire inlet explosion-proof plug, the wire outlet explosion-proof plug and the zero bar. A second partition plate can be arranged in the power box, and a heat dissipation mechanism is arranged on the second partition plate and the box bottom to dissipate heat of the electrical components. The circuit is simple in design, safe and reliable.

Description

Technical Field

[0001] The invention relates to the field of electric power equipment testing devices, in particular to a portable testing power supply box. Background Art

[0002] The substation on-site high-voltage test requires a power supply, which is transferred from the on-site maintenance power box to the instrument. The "Electric Power Safety Work Regulations" stipulate that the test power supply must have a double-stage knife switch with obvious disconnection, and must also be equipped with overload and leakage protection devices.

[0003] The existing high-voltage test power box still has many shortcomings in actual use, such as: (1) the circuit design is complex, there is no troubleshooting function, and there is no intuitive visual signal to prompt the operating status of the equipment and whether it is normal or not; (2) in order to ensure waterproofness, the heat dissipation is weakened, and the heat dissipation performance is poor. Summary of the invention

[0004] The purpose of the present invention is to provide a portable test power box with a compact structure that is easy to carry, a simple circuit design that is safe and reliable, and a fault detection function that gives users intuitive visual signals to indicate the operating status of the equipment and improves the heat dissipation of the equipment.

[0005] The technical solution adopted by the present invention to solve the technical problem is:

[0006] A portable intelligent high-voltage test power supply box comprises an openable box body, a first partition disposed in the box body, and electrical components installed in the inner cavity of the box body, wherein:

[0007] The side wall of the box is provided with an inlet explosion-proof plug and an outlet explosion-proof plug, and the inner wall of the box is provided with a zero connection bar and a grounding bar;

[0008] The electrical components include a power switch, a secondary knife switch, a travel switch, a position lamp, a closing lamp, a voltmeter and an overload automatic tripping device. The power switch controls the power on and off. The secondary knife switch, the travel switch, the position lamp, the closing lamp, the voltmeter and the overload automatic tripping device form a voltage monitoring circuit, a primary circuit and a secondary circuit between the incoming line explosion-proof plug, the outgoing line explosion-proof plug and the zero-connection bar;

[0009] In the voltage monitoring circuit, the explosion-proof plug is electrically connected to the voltmeter, and the voltmeter is electrically connected to the neutral bar;

[0010] The secondary knife switch in the primary circuit is in a split state, the incoming line explosion-proof plug is electrically connected to the incoming line end of the secondary knife switch, the incoming line end of the secondary barrier is electrically connected to the travel switch, the travel switch is electrically connected to the split light, and the travel switch takes the split node of the secondary knife switch, and the split light is electrically connected to the zero-connection bar;

[0011] The secondary barrier in the secondary circuit is in a closed state, the incoming line explosion-proof plug is electrically connected to the incoming line end of the secondary knife switch, the incoming line end of the secondary barrier is electrically connected to the closed position lamp, the closed position lamp is electrically connected to the zero-connection bar, and the secondary knife switch is electrically connected to the overload automatic tripping device, and the overload automatic tripping device is electrically connected to the outgoing line explosion-proof plug-;

[0012] The voltage monitoring circuit operates in both the primary circuit and the secondary circuit;

[0013] The power switch, the secondary knife switch, the open position lamp, the closed position lamp and the voltmeter partially pass through the first partition.

[0014] The usage of this portable intelligent high-voltage test power box is:

[0015] In the initial state, the secondary knife switch is in the open state. Turn on the power switch, and the voltmeter in the voltage monitoring circuit displays the power supply size to determine whether the power supply voltage is normal. When a circuit malfunction or other problems occur, the abnormal display of the voltmeter can be used as a tool for troubleshooting.

[0016] At the same time, after the power switch is turned on, the travel switch takes the position node of the secondary knife switch, recognizes that the secondary knife switch is in the position state, and the travel switch is energized to light up the position lamp;

[0017] If the voltage shows no abnormality, the secondary knife switch can be switched to the closed state, the secondary circuit is started, the closed light comes on, the device is powered on and can supply power to the electrical instruments connected to the outlet explosion-proof plug. At the same time, the voltmeter continues to display the voltage. When the circuit is overloaded, short-circuited, under-voltage or other faults occur, the overload automatic tripping device automatically trips, which can better protect the safety of equipment and personnel.

[0018] The portable intelligent high-voltage test power box in this technical solution uses a safer TN-S wiring system with simple wiring and high safety and reliability. The TN-S zero-connection protection system separates the leading and protective grounding wires of the power system, making leakage protection during electrical failures more reliable and greatly improving electrical safety.

[0019] The electrical components inside the power box have simple circuits and connection structures, making them easy to operate and maintain.

[0020] Furthermore, the power supply is made of aluminum alloy, and the first partition is made of non-combustible, insulating, waterproof and hard material. The first partition isolates the circuit inside the box from the electrical components that need to be operated and realized in layers, making the operation surface neater and clear at a glance, and also effectively protecting the circuit and improving operational safety.

[0021] Furthermore, the secondary knife switch is a bipolar knife switch with an obvious disconnection point, and the secondary knife switch is electrically connected to the grounding bar.

[0022] Furthermore, the open position light is located on the open position side of the secondary knife switch, and the closed position light is located on the closed position side of the secondary knife switch. The open position light and the closed position light have indicator lights of different colors, providing an intuitive visual signal to the test personnel.

[0023] Furthermore, a box cover that can be opened and closed is hinged on the main body of the box, which is convenient for opening the box; and a handle is provided on one side of the box, which is convenient for carrying the box.

[0024] Furthermore, the box body is also provided with a second partition, which is also made of non-combustible, insulating, waterproof and hard material. The electrical components are installed between the first partition and the second partition. A heat dissipation mechanism is provided between the second partition and the bottom wall of the box body to dissipate the heat generated during the operation of the electrical components in time to reduce the risk of short circuit.

[0025] Further, the heat dissipation mechanism includes a fan, a dual-shaft motor, a worm, a turbine, a transition pipe, a threaded rod, a threaded guide pipe and a plug;

[0026] The bottom of the box body is provided with two exhaust ports spaced apart from each other, the second partition is provided with a mounting port spaced apart from each other, and a plurality of vents are spaced apart from each other, and the first partition is provided with two air inlets spaced apart from each other;

[0027] A fan is arranged on one side of the air inlet on the bottom of the box, a double-axis motor is arranged on the plate body between the mounting openings of the second partition, two shafts of the double-axis motor are connected with the worm, the rotation of the shaft drives the worm to rotate, a transition pipe is rotatably connected in the mounting opening of the second partition through a bearing, a fixed sleeve on one side of the transition pipe is provided with a turbine matched with the worm, the rotation of the worm drives the turbine to rotate, and then drives the transition pipe to rotate, the inner wall of the transition pipe is symmetrically provided with two sections of threads in opposite directions, the two sections of threads of the transition pipe are connected with different threaded rods, a plug that can be rotated from the exhaust port is arranged on the threaded rod near the exhaust port, a plug that can be screwed out from the air inlet is arranged on the threaded rod near the air inlet, and screw threads are arranged on the outer walls of the threaded pipes on both sides of the transition pipe The threaded guide tube is fixed to the inner wall of the box body. The transition tube is restricted by the bearing and cannot be displaced left and right when rotating. Therefore, the threaded rod connected to its internal thread rotates closer or farther in the transition tube, driving the plug to be pulled out or inserted from the air inlet and exhaust port. In this process, the threaded rod is guided by the threaded guide tube to maintain smooth movement. When the plug is pulled out, the box body is opened and the fan is started. The air inlet, vent and exhaust port are connected. The air passes through the electrical components to take away the heat generated during the operation of the electrical components. When the test box is not in use, the dual-axis motor is driven to drive the threaded rod to insert the plug into the air inlet and exhaust port, which improves the heat dissipation efficiency of the device during operation while providing waterproof protection, and prevents overheating and short circuit of the circuit.

[0028] Furthermore, a sealing outer edge is provided at one end of the plug close to the threaded rod, and the sealing outer edge contacts the inner wall of the box body when the plug is inserted into the exhaust port, and contacts the inner wall of the first partition when the plug is inserted into the air inlet, thereby improving the waterproof sealing effect.

[0029] Furthermore, the outer wall of the bottom of the box body is provided with feet to ensure the ventilation effect.

[0030] The beneficial effects of the present invention are as follows: compared with the prior art, the power transmission line crossing wire construction method of the present invention has the following advantages: small structure and easy to carry, simple line design and safe and reliable, with fault detection function, giving users intuitive visual signals to prompt the operating status of the equipment, and improving the heat dissipation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the connection relationship of electrical components in Example 1 of the present invention;

[0032] Figure 2 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0033] Figure 3 Schematic diagram of the box structure of Example 2 of the present invention (electrical components and their mounting holes are not shown, and the side walls and front end of the box are partially opened to facilitate observation of the interior);

[0034] Figure 4 For the present invention Figure 3 A schematic diagram of the structure from another angle;

[0035] Figure 5 For the present invention Figure 3 The schematic diagram of the structure after removing the box and fan;

[0036] Figure 6 For the present invention Figure 5 A schematic diagram of the structure from another angle;

[0037] Among them, 1 is a box body, 2 is the first partition, 3 is an incoming line explosion-proof plug, 4 is an outgoing line explosion-proof plug, 5 is a zero row, 6 is a grounding row, 7 is a power switch, 8 is a secondary knife switch, 9 is a travel switch, 10 is a position lamp, 11 is a closing position lamp, 12 is a voltmeter, 13 is an overload automatic tripping device, 14 is a second partition, 15 is a fan, 16 is a dual-axis motor, 17 is a worm, 18 is a turbine, 19 is a transition pipe, 20 is a threaded rod, 21 is a threaded guide pipe, 22 is a plug, 23 is an exhaust port, 24 is a mounting port, 25 is an air vent, and 26 is an air inlet. DETAILED DESCRIPTION

[0038] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0039] Example 1

[0040] like Figure 1-2 In the embodiment shown, a portable intelligent high-voltage test power supply box includes an openable box body 1, a first partition 2 arranged in the box body 1, and electrical components installed in the inner cavity of the box body 1, wherein:

[0041] The inner wall of the box body 1 is provided with an incoming line explosion-proof plug 3 and an outgoing line explosion-proof plug 4, and the inner wall of the box body 1 is provided with a zero connection bar 5 and a grounding bar 6;

[0042] The electrical components include a power switch 7, a secondary knife switch 8, a travel switch 9, a position lamp 10, a closing lamp 11, a voltmeter 12 and an overload automatic tripping device 13. The power switch 7 controls the power on and off. The secondary knife switch 8, the travel switch 9, the position lamp 10, the closing lamp 11, the voltmeter 12 and the overload automatic tripping device 13 form a voltage monitoring circuit, a primary circuit and a secondary circuit between the incoming line explosion-proof plug 3, the outgoing line explosion-proof plug 4 and the zero-connection bar 5;

[0043] In the voltage monitoring circuit, the explosion-proof plug is electrically connected to the voltmeter 12, and the voltmeter 12 is electrically connected to the neutral bar 5;

[0044] The secondary knife switch 8 in the primary circuit is in a split state, the incoming line explosion-proof plug 3 is electrically connected to the incoming line end of the secondary knife switch 8, the incoming line end of the secondary barrier is electrically connected to the travel switch 9, the travel switch 9 is electrically connected to the split light 10, and the travel switch takes the split node of the secondary knife switch, and the split light 10 is electrically connected to the zero bar 5;

[0045] The secondary gate in the secondary circuit is in the closed state, the incoming line explosion-proof plug 3 is electrically connected to the incoming line end of the secondary knife switch 8, the incoming line end of the secondary gate is electrically connected to the closed position lamp 11, the closed position lamp 11 is electrically connected to the zero bar 5, and the secondary knife switch 8 is electrically connected to the overload automatic tripping device 13, and the overload automatic tripping device 13 is electrically connected to the outgoing line explosion-proof plug 4;

[0046] The voltage monitoring circuit operates in both the primary circuit and the secondary circuit;

[0047] The power switch 7 , the secondary knife switch 8 , the open position lamp 10 , the closed position lamp 11 and the voltmeter 12 partially pass through the first partition 2 .

[0048] The usage of this portable intelligent high-voltage test power box is:

[0049] In the initial state, the secondary knife switch 8 is in the open state. Turn on the power switch 7. The voltmeter 12 in the voltage monitoring circuit displays the power supply size to determine whether the power supply voltage is normal. When a circuit failure or other problems occur, the abnormal display of the voltmeter 12 can be used as a tool for troubleshooting.

[0050] At the same time, after the power switch 7 is turned on, the travel switch takes the position node of the secondary knife switch, recognizes that the secondary knife switch is in the position state, and the travel switch 9 is energized to light the position lamp 10;

[0051] If the voltage shows no abnormality, the secondary knife switch 8 can be switched to the closed state, the secondary circuit is started, the closed light 11 lights up, the device is powered on and can supply power to the electrical instrument connected to the outlet explosion-proof plug 4. At the same time, the voltmeter 12 continues to display the voltage condition. When the circuit is overloaded, short-circuited, under-voltage or other faults occur, the overload automatic tripping device 13 automatically trips, which can better protect the safety of equipment and staff.

[0052] The portable intelligent high-voltage test power box in this technical solution uses a safer TN-S wiring system with simple wiring and high safety and reliability. The TN-S zero-connection protection system separates the leading and protective grounding wires of the power system, making leakage protection during electrical failures more reliable and greatly improving electrical safety.

[0053] The electrical components inside the power box have simple circuits and connection structures, making them easy to operate and maintain.

[0054] In this embodiment, the power supply is made of aluminum alloy, and the first partition 2 is made of non-combustible, insulating, waterproof and hard material. The first partition 2 isolates the circuit inside the box 1 from the electrical components that need to be operated and realized in layers, making the operation surface more tidy and clear at a glance, and also effectively protecting the circuit and improving operational safety.

[0055] In this embodiment, the secondary knife switch 8 is a double-stage knife switch with an obvious disconnection point, and the secondary knife switch 8 is electrically connected to the grounding bar 6 .

[0056] In this embodiment, the open position light 10 is located on the open position side of the secondary knife switch 8, and the closed position light 11 is located on the closed position side of the secondary knife switch 8. The open position light 10 and the closed position light 11 are indicator lights of different colors, providing an intuitive visual signal to the test personnel.

[0057] In this embodiment, a lid that can be opened and closed is hinged on the main body of the box body 1 to facilitate opening the box body 1; a handle is provided on one side of the box body 1 to facilitate carrying the box body 1.

[0058] Example 2

[0059] like Figure 3-6In the illustrated embodiment, on the basis of embodiment 1, the box body 1 is further provided with a second partition 14, and the second partition 14 is also made of non-combustible, insulating, waterproof and hard material. The electrical components are installed between the first partition 2 and the second partition 14, and a heat dissipation mechanism is provided between the second partition 14 and the bottom wall of the box body 1 to dissipate the heat generated during the operation of the electrical components in time to reduce the risk of short circuit.

[0060] In this embodiment, the heat dissipation mechanism includes a fan 15, a dual-axis motor 16, a worm 17, a turbine 18, a transition pipe 19, a threaded rod 20, a threaded guide pipe 21 and a plug 22;

[0061] The bottom of the box body 1 is provided with two exhaust ports 23 spaced apart from each other, the second partition plate 14 is provided with a mounting port 24 spaced apart from each other, and the second partition plate 14 is provided with a plurality of vent holes 25 spaced apart from each other, and the first partition plate 2 is provided with two air inlets 26 spaced apart from each other;

[0062] A fan 15 is provided on one side of the air inlet 26 on the bottom of the box, a double-axis motor 16 is provided on the plate body between the mounting openings 24 of the second partition 14, and the two shafts of the double-axis motor 16 are connected to the worm 17, and the rotation of the shaft drives the worm 17 to rotate, and a transition pipe 19 is rotatably connected to the mounting opening 24 of the second partition 14 through a bearing, and a turbine 18 matching the worm 17 is fixedly sleeved on one side of the transition pipe 19, and the rotation of the worm 17 drives the turbine 18 to rotate, thereby driving the transition pipe 19 to rotate, and the inner wall of the transition pipe 19 is symmetrically provided with two sections of threads in opposite directions, and the two sections of threads of the transition pipe 19 are connected with different threaded rods 20, and a plug 22 that can be rotated from the exhaust port 23 is provided on the threaded rod 20 near the exhaust port 23, and a plug 22 that can be screwed out of the air inlet 26 is provided on the threaded rod 20 near the air inlet 26. The threads on both sides of the transition pipe 19 The outer wall of the tube is provided with a threaded guide tube 21, which is fixed to the inner wall of the box body 1. The transition tube 19 is restricted by the bearing and cannot be displaced left and right when rotating. Therefore, the threaded rod 20 connected to its internal thread rotates closer or farther in the transition tube 19, driving the plug 22 to be pulled out or inserted from the air inlet 26 and the exhaust port 23. During this process, the threaded rod 20 is guided by the threaded guide tube 21 to maintain smooth movement. When the plug 22 is pulled out, the box body 1 is opened and the fan 15 is started, so that the air inlet 26, the vent 25, and the exhaust port 23 are connected, and the air passes through the electrical components to take away the heat generated during the operation of the electrical components. When the test box is not in use, the dual-axis motor 16 is driven to drive the threaded rod 20 to insert the plug 22 into the air inlet 26 and the exhaust port 23, thereby improving the heat dissipation efficiency of the device during operation while providing waterproof protection, and preventing the circuit from overheating and short circuiting.

[0063] In this embodiment, a sealing outer edge is provided at one end of the plug 22 close to the threaded rod 20. The sealing outer edge contacts the inner wall of the box body 1 when the plug 22 is inserted into the exhaust port 23, and contacts the inner wall of the first partition 2 when the plug 22 is inserted into the air inlet 26, thereby improving the waterproof sealing effect.

[0064] In this embodiment, the outer wall of the bottom of the box body 1 is provided with feet to ensure the ventilation effect.

[0065] The above-mentioned specific implementations are only specific cases of the present invention. The patent protection scope of the present invention includes but is not limited to the product form and style of the above-mentioned specific implementations. Any appropriate changes or modifications made to them by ordinary technicians in the technical field that conform to the claims of the present invention shall fall within the patent protection scope of the present invention.

Claims

1. A portable intelligent high-voltage test power supply box, characterized in that: It includes an openable box, a first partition disposed in the box, and electrical components installed in the inner cavity of the box, wherein: The side wall of the box is provided with an inlet explosion-proof plug and an outlet explosion-proof plug, and the inner wall of the box is provided with a zero connection bar and a grounding bar; The electrical components include a power switch, a secondary knife switch, a travel switch, a position lamp, a closing lamp, a voltmeter and an overload automatic tripping device. The power switch controls the power on and off. The secondary knife switch, the travel switch, the position lamp, the closing lamp, the voltmeter and the overload automatic tripping device form a voltage monitoring circuit, a primary circuit and a secondary circuit between the incoming line explosion-proof plug, the outgoing line explosion-proof plug and the zero-connection bar; In the voltage monitoring circuit, the explosion-proof plug is electrically connected to the voltmeter, and the voltmeter is electrically connected to the neutral bar; The secondary knife switch in the primary circuit is in a split state, the incoming line explosion-proof plug is electrically connected to the incoming line end of the secondary knife switch, the incoming line end of the secondary barrier is electrically connected to the travel switch, and the travel switch takes the split node of the secondary knife switch, the travel switch is electrically connected to the split light, and the split light is electrically connected to the zero-connection bar; The secondary barrier in the secondary circuit is in a closed state, the incoming line explosion-proof plug is electrically connected to the incoming line end of the secondary knife switch, the incoming line end of the secondary barrier is electrically connected to the closed position lamp, the closed position lamp is electrically connected to the zero-connection bar, and the secondary knife switch is electrically connected to the overload automatic tripping device, and the overload automatic tripping device is electrically connected to the outgoing line explosion-proof plug-; The voltage monitoring circuit operates in both the primary circuit and the secondary circuit; The power switch, the secondary knife switch, the open position lamp, the closed position lamp and the voltmeter partially pass through the first partition.

2. A portable intelligent high-voltage test power supply box according to claim 1, characterized in that: The secondary knife switch is a bipolar knife switch with an obvious disconnection point, and the secondary knife switch is electrically connected to the grounding bar.

3. A portable intelligent high-voltage test power supply box according to claim 1, characterized in that: The open position light is located on the open position side of the secondary knife switch, and the closed position light is located on the closed position side of the secondary knife switch.

4. A portable intelligent high-voltage test power supply box according to claim 1, characterized in that: The separate position lamp and the combined position lamp have indicator lights of different colors.

5. The portable intelligent high-voltage test power supply box according to claim 1 is characterized in that: A box cover that can be opened and closed is hinged on the main body of the box, and a handle is arranged on one side of the box.

6. A portable intelligent high-voltage test power supply box according to any one of claims 1 to 5, characterized in that: The box body is also provided with a second partition, the electrical components are installed between the first partition and the second partition, and a heat dissipation mechanism is provided between the second partition and the bottom wall of the box body.

7. A portable intelligent high-voltage test power supply box according to claim 6, characterized in that: The heat dissipation mechanism includes a fan, a dual-shaft motor, a worm, a turbine, a transition pipe, a threaded rod, a threaded guide pipe and a plug; The bottom of the box body is provided with two exhaust ports spaced apart from each other, the second partition is provided with a mounting port spaced apart from each other, and a plurality of vents are spaced apart from each other, and the first partition is provided with two air inlets spaced apart from each other; A fan is arranged on one side of the air inlet arranged on the bottom of the box body, a double-axis motor is arranged on the plate body between the mounting openings of the second partition, two shafts of the double-axis motor are connected to the worm, a transition pipe is rotatably connected to the mounting opening of the second partition through a bearing, a turbine matching the worm is arranged on one side of the transition pipe, two sections of threads in opposite directions are symmetrically arranged on the inner wall of the transition pipe, the two sections of threads of the transition pipe are connected with different threaded rods, a plug that can be rotated from the exhaust port is arranged on the threaded rod near the exhaust port, a plug that can be unscrewed from the air inlet is arranged on the threaded rod near the air inlet, threaded guide pipes are arranged on the outer walls of the threaded pipes on both sides of the transition pipe, and the threaded guide pipes are fixed to the inner wall of the box body.

8. The portable intelligent high-voltage test power supply box according to claim 7 is characterized in that: When the dual-shaft motor is started, the worm drives the turbine to rotate, and the turbine drives the transition pipe to rotate, and the two threaded rods in the same transition pipe approach each other or move away from each other.

9. The portable intelligent high-voltage test power supply box according to claim 7, characterized in that: One end of the plug close to the threaded rod is provided with a sealing outer edge.

10. The portable intelligent high-voltage test power supply box according to claim 7, characterized in that: The outer wall of the bottom of the box body is provided with pads.

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