Terminal type direct current electric leakage monitoring device

Abstract

The invention belongs to the technical field of circuit monitoring, and particularly discloses a terminal type direct-current electric leakage monitoring device which comprises an electric leakage detector, a heat conduction cooling mechanism is arranged on the outer wall of the electric leakage detector, the heat conduction cooling mechanism is used for heat conduction and heat dissipation, and an installation mechanism is arranged on the outer wall of the heat conduction cooling mechanism. The installation mechanism is used for installing a heat conduction cooling mechanism, the outer wall of the electric leakage detector is provided with a protection mechanism, the protection mechanism is used for protecting the electric leakage detector, the outer wall of the electric leakage detector is provided with an air injection cooling mechanism, and the air injection cooling mechanism is used for guaranteeing the air pressure of the protection mechanism. An air pump in the heat conduction cooling mechanism is used for providing air for a protection air bag in the protection mechanism, so that when the device falls off or is impacted, impact force can be buffered through the protection air bag, then the impact force can be prevented from directly entering an electronic element in the device shell, the device can be protected, and the service life of the device is prolonged. The service life of the device is prolonged.

Description

Technical Field

[0001] This invention belongs to the field of circuit monitoring technology, and specifically discloses a terminal-type DC leakage current monitoring device. Background Technology

[0002] Terminal-type DC leakage current monitoring devices are crucial for the safe operation of DC circuits. Connected to the DC circuit via terminals, they employ high-precision detection technology to accurately detect leakage currents in the milliampere range. These devices are easy to install, have strong anti-interference capabilities, and can operate stably in complex electromagnetic environments. Once a leakage current exceeds a preset threshold, they quickly issue an audible and visual alarm signal, alerting maintenance personnel to promptly investigate the fault. Widely used in DC systems such as photovoltaic power plants and rail transit, they safeguard the safe operation of DC circuits.

[0003] The protection structure of existing terminal-type DC leakage current monitoring devices is basically achieved through the outer casing. However, during installation and use, the device is prone to being dropped or impacted. In this case, due to the lack of a protective structure, the impact force will enter the internal electronic components through the outer casing, causing damage to the internal electronic components and thus reducing the service life of the device. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to propose a terminal-type DC leakage current monitoring device to solve the problem that the existing terminal-type DC leakage current monitoring devices are only protected by the outer shell, which has limited buffering against impact forces, making the internal electronic components of the device easily damaged by impact forces and reducing the life of the device.

[0005] To achieve the above objectives, the present invention provides a terminal-type DC leakage current monitoring device, including a leakage current detector. The outer wall of the leakage current detector is provided with a heat conduction cooling mechanism for heat dissipation. The outer wall of the heat conduction cooling mechanism is provided with a mounting mechanism for mounting the heat conduction cooling mechanism. The outer wall of the leakage current detector is provided with a protection mechanism for protecting the leakage current detector. The outer wall of the leakage current detector is also provided with a jet cooling mechanism to ensure the air pressure of the protection mechanism and to provide air cooling.

[0006] In the above technical solution, preferably, the heat conduction cooling mechanism includes a mounting frame, a plurality of heat dissipation fins are fixedly connected to the outer wall of the mounting frame, a vent pipe is wound around the outside of the mounting frame, an air pump is fixedly connected between the outer walls of the plurality of heat dissipation fins, a connecting pipe is fixedly connected to the output end of the air pump, and the other end of the connecting pipe is threaded to one end of the vent pipe.

[0007] In the above technical solution, preferably, the installation mechanism includes four mounting seats. A rotating cylinder is rotatably connected to the inner side of each mounting seat. A blocking plate is fixedly connected to the outer side of the rotating cylinder near the mounting seat. A limiting plate is slidably connected inside the rotating cylinder. A movable rod is fixedly connected to the end of the limiting plate away from the blocking plate. A blocking disc is fixedly connected to the outer side of the movable rod. A blocking head is fixedly connected to the end of the movable rod away from the limiting plate. A tension spring is sleeved on the outer side of the rotating cylinder. An installation groove is opened on the outer side of the leakage current detector. The inner side of the mounting frame is engaged with the inside of the installation groove. Fixing plates are fixedly connected to both sides of the outer wall of the leakage current detector. Engaging grooves are opened at both the upper and lower ends of the fixing plates. The movable rod engages with the engaging grooves.

[0008] In the above technical solution, preferably, the protection mechanism includes multiple protective airbags, the outer walls of the multiple protective airbags are fixedly connected to the outer wall of the leakage current detector, an air inlet hose mesh is fixedly connected between one end of the multiple protective airbags, an exhaust hose mesh is fixedly connected between the other ends of the multiple protective airbags, and one end of the air inlet hose mesh is threadedly connected to the other end of the vent pipe.

[0009] In the above technical solution, preferably, the jet cooling mechanism includes two loading cylinders, each loading cylinder has a return spring inside, a limiting plate is slidably connected inside the loading cylinder, a connecting post is fixedly connected to the end of the limiting plate away from the return spring, a plug plate is fixedly connected to the end of the connecting post away from the limiting plate, connecting pipes are fixedly connected to both ends of the loading cylinder, and multiple vent holes are opened inside the limiting plate, one of the connecting pipes is fixedly connected to an exhaust pipe at one end.

[0010] In the above technical solution, preferably, one end of the tension spring is fixedly connected to the end of the blocking plate near the mounting base, and the other end of the tension spring is fixedly connected to the end of the blocking plate away from the mounting base.

[0011] In the above technical solution, preferably, one end of the return spring is fixedly connected to the inside of the housing cylinder, and the other end of the return spring is fixedly connected to the end of the limiting plate away from the stop plate.

[0012] In the above technical solution, preferably, the plug plate is slidably connected inside one of the connecting pipes, and the outer walls of the two exhaust pipes are respectively fixedly connected to the upper and lower ends of the leakage detector.

[0013] In the above technical solution, preferably, the movable rod passes through the end of the rotating cylinder away from the mounting base, and the outer walls of the four mounting bases are respectively fixedly connected to the upper and lower ends of the two sides of the mounting frame.

[0014] In the above technical solution, preferably, the end of the connecting pipe away from the exhaust pipe is fixedly connected to the outer wall of the exhaust hose network, and multiple nozzles are fixedly connected to the outer wall of the exhaust pipe near the leakage detector.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention provides gas to the protective airbag in the protection mechanism through the air pump in the heat conduction cooling mechanism. This allows the protective airbag to buffer the impact force when the device is dropped or impacted, thereby preventing the impact force from directly entering the electronic components inside the device housing, thus protecting the device and improving its service life.

[0016] 2. The present invention, through the heat conduction cooling mechanism and the jet cooling mechanism, can cool the device after providing sufficient air pressure to the protection mechanism, thereby preventing the device temperature from rising and further protecting the device. This avoids damage to the device due to heat and prevents economic losses. Attached Figure Description

[0017] Figure 1 The three-dimensional representation of the present invention Figure 1 ; Figure 2 This is a schematic diagram of the structure of the protective airbag of the present invention; Figure 3 This is a schematic diagram of the heat conduction cooling mechanism of the present invention; Figure 4 This is a schematic diagram of the tension spring of the present invention; Figure 5 This is a schematic diagram of the internal structure of the rotating cylinder of the present invention; Figure 6 This is a schematic diagram of the structure of the fixing plate of the present invention; Figure 7 This is a schematic diagram of the exhaust pipe structure of the present invention; Figure 8 This is a schematic diagram of the internal structure of the container of the present invention; Figure 9 The three-dimensional representation of the present invention Figure 2 .

[0018] In the diagram: 1. Leakage detector; 2. Heat conduction cooling mechanism; 201. Mounting frame; 202. Heat dissipation fins; 203. Vent pipe; 204. Air pump; 205. Connecting pipe; 3. Mounting mechanism; 301. Mounting base; 302. Rotating cylinder; 303. Baffle plate; 304. Limiting plate; 305. Movable rod; 306. Baffle plate; 307. Baffle head; 308. Tension spring; 309. Mounting groove; 310. Fixing plate; 311. Engaging groove; 4. Protection mechanism; 401. Protective airbag; 402. Inlet hose mesh; 403. Exhaust hose mesh; 5. Jet cooling mechanism; 501. Loading cylinder; 502. Return spring; 503. Limiting plate; 504. Connecting post; 505. Plug plate; 506. Connecting pipe; 507. Vent hole; 508. Exhaust pipe. Detailed Implementation

[0019] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the invention is not limited to the specific embodiments disclosed below.

[0021] like Figures 1-9 The terminal-type DC leakage current monitoring device shown includes a leakage current detector 1. The outer wall of the leakage current detector 1 is provided with a heat conduction cooling mechanism 2 for heat conduction and heat dissipation. The outer wall of the heat conduction cooling mechanism 2 is provided with a mounting mechanism 3 for mounting the heat conduction cooling mechanism 2. The outer wall of the leakage current detector 1 is provided with a protection mechanism 4 for protecting the leakage current detector 1. The outer wall of the leakage current detector 1 is provided with a jet cooling mechanism 5 for ensuring the air pressure of the protection mechanism 4 and also for air cooling.

[0022] The heat conduction cooling mechanism 2 includes a mounting frame 201, which provides an installation position. Multiple heat dissipation fins 202 are fixedly connected to the outer wall of the mounting frame 201. The heat dissipation fins 202 can accelerate heat dissipation. A vent pipe 203 is wound around the outside of the mounting frame 201, which can allow air to pass through, thereby accelerating the heat dissipation of the heat dissipation fins 202. An air pump 204 is fixedly connected between the outer walls of the multiple heat dissipation fins 202. The air pump 204 can provide gas. A connecting pipe 205 is fixedly connected to the output end of the air pump 204. The connecting pipe 205 has a connecting function. The other end of the connecting pipe 205 is threaded to one end of the vent pipe 203. After the air pump 204 generates gas, it can conduct the gas to the inside of the vent pipe 203 through the connecting pipe 205, thereby accelerating the heat dissipation of the heat dissipation fins 202 by using flowing cold gas, and thus accelerating the heat dissipation of the leakage current detector 1 by using heat conduction.

[0023] The mounting mechanism 3 includes four mounting seats 301, each providing an installation position. A rotating cylinder 302 is rotatably connected to the inner side of each mounting seat 301, also providing an installation position. A blocking plate 303 is fixedly connected to the outer side of the rotating cylinder 302 near the mounting seat 301, providing the installation position. A limiting plate 304 is slidably connected inside the rotating cylinder 302, serving a limiting function. A movable rod 305 is fixedly connected to the end of the limiting plate 304 away from the blocking plate 303. A blocking disc 306 is fixedly connected to the outer side of the movable rod 305. A blocking head 307 is fixedly connected to the end of the movable rod 305 away from the limiting plate 304. The blocking head 307 can engage with the mounting frame 201, preventing the movable rod 305 from retracting into the rotating cylinder 302. A tension spring 308 is sleeved on the outer side of the rotating cylinder 302, acting on the blocking disc 306 with its own tension. By using the blocking disc 306 to apply force to the movable rod 305, the blocking head 307 can be pressed against the outer wall of the fixing plate 310, thereby fixing the mounting frame 201. The external side of the leakage current detector 1 is provided with a mounting groove 309, which provides the mounting position for the mounting frame 201. The inner side of the mounting frame 201 is engaged with the inside of the mounting groove 309. The outer walls of the leakage current detector 1 are fixedly connected to both sides of the fixing plate 310. The upper and lower ends of the fixing plate 310 are provided with engaging grooves 311. The movable rod 305 engages with the engaging grooves 311. One end of the tension spring 308 is fixedly connected to the end of the blocking disc 306 near the mounting base 301, and the other end of the tension spring 308 is fixedly connected to the end of the blocking plate 303 away from the mounting base 301. The movable rod 305 passes through the end of the rotating cylinder 302 away from the mounting base 301. The outer walls of the four mounting bases 301 are respectively fixedly connected to the upper and lower ends of the two sides of the mounting frame 201. When installing the heat conduction cooling mechanism 2, first align the mounting frame 201 with the mounting groove 309 and engage the mounting frame 201 into the interior of the mounting groove 309. Then, pull the blocking head 307 away from the mounting base 301, thereby using the blocking disc 306 to stretch the tension spring 308. Then, rotate the rotating cylinder 302 towards the fixed plate 310, so that the movable rod 305 engages with the engaging groove 311. Under the reaction force of the tension spring 308, the blocking head 307 is pressed tightly against the outer wall of the fixed plate 310, thus completing the installation of the mounting frame 201. If it is necessary to disassemble the heat conduction cooling mechanism 2, first pull the blocking head 307 away from the mounting base 301 and rotate the movable rod 305 away from the fixed plate 310, so that the movable rod 305 rotates out of the engaging groove 311. Then, the mounting frame 201 can be pulled outward, thus completing the disassembly of the mounting frame 201.

[0024] The protection mechanism 4 includes multiple protective airbags 401. These airbags 401 inflate upon the introduction of gas, thus providing a buffering effect. The outer walls of each airbag 401 are fixedly connected to the outer wall of the leakage current detector 1. An inlet hose mesh 402 is fixedly connected to one end of each airbag 401, allowing gas to enter the interior of each airbag. An exhaust hose mesh 403 is fixedly connected to the other end of each airbag 401, allowing gas to enter the interior of each airbag. The discharged gas enters the interior of the exhaust hose mesh 403. One end of the intake hose mesh 402 is threaded to the other end of the vent pipe 203. When the gas generated by the air pump 204 enters the interior of the intake hose mesh 402 through the vent pipe 203, it can fill the interior of the protective airbag 401 through the intake hose mesh 402, thereby blowing the protective airbag 401 and making the protective airbag 401 elastic. At this time, it can buffer the impact force whether the device is hit by a heavy object or dropped, thereby protecting the leakage detector 1. At the same time, the gas inside the protective airbag 401 can be discharged through the exhaust hose mesh 403.

[0025] The jet cooling mechanism 5 includes two housing cylinders 501, which provide installation positions. A return spring 502 is installed inside each housing cylinder 501. A limiting plate 503 is slidably connected inside each housing cylinder 501, serving a limiting function. A connecting post 504 is fixedly connected to the end of the limiting plate 503 away from the return spring 502, and a stopper plate 505 is fixedly connected to the end of the connecting post 504 away from the limiting plate 503. The connecting post 504 connects the stopper plate 505 to the limiting plate 503. Connecting pipes 506 are fixedly connected to both ends of each housing cylinder 501, allowing for pipe connections. Multiple vent holes 507 are provided inside the limiting plate 503, allowing for ventilation. One of the connecting pipes 506... One end of 06 is fixedly connected to an exhaust pipe 508, which can spray gas. The air pressure inside the protective airbag 401 needs to be greater than the elastic force of the return spring 502 before it can be discharged from the protective airbag 401. One end of the return spring 502 is fixedly connected to the inside of the housing 501, and the other end of the return spring 502 is fixedly connected to the end of the limiting plate 503 away from the plug plate 505. The plug plate 505 is slidably connected to the inside of one of the connecting pipes 506. The outer walls of the two exhaust pipes 508 are fixedly connected to the upper and lower ends of the leakage detector 1, respectively. The end of the connecting pipe 506 away from the exhaust pipe 508 is fixedly connected to the outer wall of the exhaust hose mesh 403. Multiple nozzles are fixedly connected to the exhaust pipe 508 near the outer wall of the leakage detector 1. When the gas in the exhaust hose mesh 403 enters the housing 501, and the gas pressure reaches a level sufficient to overcome the elastic force of the return spring 502, it pushes the plug plate 505 into the housing 501. This push force is transmitted to the connecting pin 504 and the return spring 502, compressing the return spring 502. Once the plug plate 505 has completely moved out of the connecting pipe 506, the gas is forced through the housing 501 into the exhaust pipe 508, whereby it is ejected from the exhaust pipe 508. The gas is used for air cooling of the leakage current detector 1. When the gas no longer enters the interior of the connecting pipe 506, the reaction force of the reset spring 502 can push the limit plate 503 to move upward. This allows the connecting post 504 to push the plug plate 505 to move away from the reset spring 502, thereby allowing the plug plate 505 to re-seal the interior of the connecting pipe 506. This allows the internal air pressure of the protective airbag 401 to reach a certain level, and the excess gas can also be used for air cooling.

[0026] Working principle: When installing the heat conduction cooling mechanism 2, first align the mounting frame 201 with the mounting groove 309 and engage the mounting frame 201 into the interior of the mounting groove 309. At this time, pull the blocking head 307 away from the mounting base 301, so that the blocking plate 306 can stretch the tension spring 308. Then, rotate the rotating cylinder 302 towards the fixed plate 310, so that the movable rod 305 engages with the engaging groove 311. Under the reaction force of the tension spring 308, the blocking head 307 is pressed tightly against the outer wall of the fixed plate 310, thus completing the installation of the mounting frame 201. If it is necessary to disassemble the heat conduction cooling mechanism 2, first pull the blocking head 307 away from the mounting base 301 and rotate the movable rod 305 away from the fixed plate 310, so that the movable rod 305 can rotate out of the engaging groove 311. At this time, the mounting frame 201 can be pulled outward, thus completing the disassembly of the mounting frame 201. When the gas generated by the air pump 204 is introduced into the air intake hose network 402 through the air vent 203, the gas can be filled into the protective airbag 401 through the air intake hose network 402, thereby inflating the protective airbag 401 and making the protective airbag 401 elastic. At this time, whether the device is hit by a heavy object or dropped, it can buffer the impact force and thus protect the leakage current detector 1. At the same time, the gas inside the protective airbag 401 can be discharged through the exhaust hose network 403. When the gas in the exhaust hose mesh 403 enters the housing 501, and the gas pressure reaches a level sufficient to overcome the elastic force of the return spring 502, it pushes the plug plate 505 into the housing 501. This push force is transmitted to the connecting pin 504 and the return spring 502, compressing the return spring 502. Once the plug plate 505 has completely moved out of the connecting pipe 506, the gas is forced through the housing 501 into the exhaust pipe 508, whereby it is ejected from the exhaust pipe 508. The gas is used for air cooling of the leakage current detector 1. When the gas no longer enters the interior of the connecting pipe 506, the reaction force of the reset spring 502 can push the limit plate 503 to move upward. This allows the connecting post 504 to push the plug plate 505 to move away from the reset spring 502, thereby allowing the plug plate 505 to re-seal the interior of the connecting pipe 506. This allows the internal air pressure of the protective airbag 401 to reach a certain level, and the excess gas can also be used for air cooling.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A terminal-type DC leakage current monitoring device, comprising a leakage current detector (1), characterized in that, The outer wall of the leakage current detector (1) is provided with a heat conduction cooling mechanism (2), which is used for heat conduction and heat dissipation. The outer wall of the heat conduction cooling mechanism (2) is provided with an installation mechanism (3), which is used for installing the heat conduction cooling mechanism (2). The outer wall of the leakage current detector (1) is provided with a protection mechanism (4), which is used to protect the leakage current detector (1). The outer wall of the leakage current detector (1) is provided with a jet cooling mechanism (5), which is used to ensure the air pressure of the protection mechanism (4) and can also perform air cooling.

2. The terminal-type DC leakage current monitoring device according to claim 1, characterized in that, The heat conduction cooling mechanism (2) includes a mounting frame (201), a plurality of heat dissipation fins (202) are fixedly connected to the outer wall of the mounting frame (201), a vent pipe (203) is wound around the outside of the mounting frame (201), an air pump (204) is fixedly connected between the outer walls of the plurality of heat dissipation fins (202), a connecting pipe (205) is fixedly connected to the output end of the air pump (204), and the other end of the connecting pipe (205) is threaded to one end of the vent pipe (203).

3. The terminal-type DC leakage current monitoring device according to claim 2, characterized in that, The mounting mechanism (3) includes four mounting seats (301). A rotating cylinder (302) is rotatably connected to the inner side of each mounting seat (301). A blocking plate (303) is fixedly connected to the outer side of the rotating cylinder (302) near the mounting seat (301). A limiting plate (304) is slidably connected inside the rotating cylinder (302). A movable rod (305) is fixedly connected to the end of the limiting plate (304) away from the blocking plate (303). A blocking disc (306) is fixedly connected to the outer side of the movable rod (305). A blocking head (307) is fixedly connected to one end away from the limiting plate (304). A tension spring (308) is sleeved on the outside of the rotating cylinder (302). An installation groove (309) is opened on the outside of the leakage detector (1). The inner side of the mounting frame (201) is engaged with the inside of the installation groove (309). Fixing plates (310) are fixedly connected to both sides of the outer wall of the leakage detector (1). Engaging grooves (311) are opened at both the upper and lower ends of the fixing plates (310). The movable rod (305) engages with the engaging grooves (311).

4. The terminal-type DC leakage current monitoring device according to claim 2, characterized in that, The protection mechanism (4) includes multiple protective airbags (401), the outer walls of the multiple protective airbags (401) are fixedly connected to the outer wall of the leakage detector (1), an air intake hose net (402) is fixedly connected between one end of the multiple protective airbags (401), and an exhaust hose net (403) is fixedly connected between the other ends of the multiple protective airbags (401). One end of the air intake hose net (402) is threadedly connected to the other end of the vent pipe (203).

5. The terminal-type DC leakage current monitoring device according to claim 4, characterized in that, The jet cooling mechanism (5) includes two loading cylinders (501). A return spring (502) is provided inside the loading cylinder (501). A limiting plate (503) is slidably connected inside the loading cylinder (501). A connecting post (504) is fixedly connected to one end of the limiting plate (503) away from the return spring (502). A plug plate (505) is fixedly connected to one end of the connecting post (504) away from the limiting plate (503). A connecting pipe (506) is fixedly connected to both ends of the loading cylinder (501). A plurality of vent holes (507) are opened inside the limiting plate (503). An exhaust pipe (508) is fixedly connected to one end of one of the connecting pipes (506).

6. The terminal-type DC leakage current monitoring device according to claim 3, characterized in that, One end of the tension spring (308) is fixedly connected to the end of the blocking disc (306) near the mounting base (301), and the other end of the tension spring (308) is fixedly connected to the end of the blocking plate (303) away from the mounting base (301).

7. The terminal-type DC leakage current monitoring device according to claim 5, characterized in that, One end of the return spring (502) is fixedly connected to the inside of the housing cylinder (501), and the other end of the return spring (502) is fixedly connected to the end of the limiting plate (503) away from the stop plate (505).

8. The terminal-type DC leakage current monitoring device according to claim 5, characterized in that, The plug plate (505) is slidably connected inside one of the connecting pipes (506), and the outer walls of the two exhaust pipes (508) are respectively fixedly connected to the upper and lower ends of the leakage detector (1).

9. The terminal-type DC leakage current monitoring device according to claim 3, characterized in that, The movable rod (305) passes through the end of the rotating cylinder (302) away from the mounting base (301), and the outer walls of the four mounting bases (301) are respectively fixedly connected to the upper and lower ends of the two sides of the mounting frame (201).

10. The terminal-type DC leakage current monitoring device according to claim 5, characterized in that, One end of the connecting pipe (506) away from the exhaust pipe (508) is fixedly connected to the outer wall of the exhaust hose mesh (403), and multiple nozzles are fixedly connected to the outer wall of the exhaust pipe (508) near the leakage detector (1).

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