Subway station low-voltage distribution box electric leakage detection device

Abstract

The utility model discloses a subway station low-voltage distribution box electric leakage detection device, and particularly relates to the technical field of subway station low-voltage distribution box instruments, the subway station low-voltage distribution box electric leakage detection device comprises an installation mechanism, one side of the installation mechanism is fixedly provided with a plurality of electric leakage protectors, and the installation mechanism comprises a first installation plate and a second installation plate. A plurality of guide rods are fixedly mounted at the bottom of the second mounting plate and slidably mounted in the first mounting plate, and a first clamping block is fixedly mounted at the top of the first mounting plate. According to the electric leakage detection device for the low-voltage distribution box of the subway station, a mounting mechanism is preliminarily clamped at the top of a DIN guide rail through first clamping blocks, a screw rod is rotated to change the distance between the first clamping blocks through cooperation among the screw rod, a second mounting plate and a second mounting sleeve, and the second clamping blocks are clamped at the bottom of the DIN guide rail; and finally, the equipment is fixed in the low-voltage distribution box of the subway station through the cooperation between the first clamping block and the second clamping block.

Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage distribution boxes in subway stations, in particular to a leakage detection device for low-voltage distribution boxes in subway stations. Background Art

[0002] The low-voltage distribution box at a subway station is a crucial component of the metro system. It distributes low-voltage electricity and provides power and control for various equipment in the station. The box distributes power from the low-voltage distribution room to various loads within the station, such as lighting, elevators, escalators, ventilation systems, and fire protection systems. In addition to distributing power, the box also performs control functions, such as switching, overload protection, and short-circuit protection, to ensure the safe operation of the power system. The low-voltage distribution box at a subway station is an indispensable part of the metro system, responsible not only for power distribution but also for control and protection. To ensure the stable operation of the subway system, the design, selection, installation, and maintenance of the low-voltage distribution box must strictly adhere to relevant standards and technical specifications.

[0003] Leakage detection devices in subway station low-voltage distribution boxes are crucial safety features designed to ensure personnel safety and the proper functioning of equipment. They primarily monitor circuit leakage, which occurs when current leaks from an intended path to an unintended path, such as through the human body or into the ground. Leakage detection devices in subway station low-voltage distribution boxes are crucial for ensuring personnel safety and stable equipment operation. Regular inspection and maintenance ensure that these devices function correctly when needed.

[0004] A leakage protector (RCP) is a leakage detection device that not only detects leakage but also cuts off the circuit to prevent electric shock and fire caused by leakage in low-voltage distribution boxes at subway stations. Existing RCPs can usually only be quickly installed on DIN rails of specific sizes and lack adjustment capabilities. While this meets usage requirements to a certain extent, it has been found in actual use that RCPs can only be installed on these specific types of rails and cannot flexibly adapt to DIN rails of different sizes. Utility Model Content

[0005] The purpose of the utility model is to provide a leakage detection device for a low-voltage distribution box in a subway station to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: A leakage detection device for a low-voltage distribution box in a subway station, comprising a mounting mechanism, wherein a plurality of leakage protectors are fixedly mounted on one side of the mounting mechanism, the mounting mechanism comprising a first mounting plate and a second mounting plate, a plurality of guide rods are fixedly mounted on the bottom of the second mounting plate, and the plurality of guide rods are slidably mounted inside the first mounting plate, a first clamping block is fixedly mounted on the top of the first mounting plate, a first mounting sleeve is fixedly mounted on one side of the first mounting plate, a mounting rod is slidably mounted inside the first mounting sleeve, a second clamping block is fixedly mounted on the top of the mounting rod, a spring is fixedly mounted on the bottom of the second clamping block, the spring is fixedly mounted on the top of the first mounting plate, a screw is rotatably mounted on one side of the second mounting plate, a second mounting sleeve is fixedly mounted on one side of the first mounting plate, and the screw is threadedly connected to the inside of the second mounting sleeve.

[0007] Preferably, the outer wall of the screw is threadedly connected with two sets of fixing nuts, and the two sets of fixing nuts are respectively arranged on the upper and lower sides of the second mounting sleeve, and the top of the screw is fixedly connected with an adjusting knob.

[0008] Preferably, a limiting block is fixedly installed on the bottom of the mounting rod, and a pull ring is fixedly installed on the bottom of the limiting block.

[0009] Preferably, a slide groove is provided on one side of the first clamping block, and a plurality of guide wheels are rotatably mounted on one side of the second mounting plate, and the guide wheels are arranged inside the slide groove.

[0010] Preferably, the leakage protector includes a main body, and a plurality of connection terminals are provided on the upper and lower sides of the main body.

[0011] Preferably, a buzzer is fixedly installed on one side of the leakage protector.

[0012] Preferably, a reset button is provided on one side of the main body, and a test button is provided on one side of the main body.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: the leakage detection device for low-voltage distribution boxes in subway stations;

[0014] 1. Initially clamp the mounting mechanism onto the top of the DIN rail using the first clamping block. Rotate the screw to adjust the distance between the first clamping blocks through the interaction between the screw, the second mounting plate, and the second mounting sleeve. Clamp the second clamping block onto the bottom of the DIN rail. Finally, the first and second clamping blocks engage to secure the device inside the low-voltage distribution box at the subway station.

[0015] During the above process, the cooperation among the first mounting sleeve, the mounting rod and the spring enables the device to be disassembled by simply pulling down the mounting rod. During this process, the spring provides an upward elastic force to the second clamping block, ensuring that the second clamping block is always clamped at the bottom of the DIN rail. The limit block limits the displacement distance of the mounting rod inside the first mounting sleeve to prevent the mounting rod from falling out of the first mounting sleeve. The pull ring facilitates the user to pull the mounting rod, and the cooperation between the slide groove and the guide wheel ensures that the device is not in a fixed state and can be moved left and right on the top of the DIN rail for easy position adjustment. The screw is fixed to prevent loosening by adjusting the two sets of fixing nuts so that the two sets of fixing nuts clamp the second mounting sleeve, and the adjusting knob facilitates the user to rotate the screw.

[0016] 2. Connect the internal wiring of the subway station's low-voltage distribution box to the main unit via the provided wiring terminals. The main unit then detects leakage current in the circuit and cuts off the power supply in the event of a short circuit. During this process, a buzzer sounds a leakage alarm. A reset button is used to manually reset and restore power. The test button simulates leakage to test the function of the leakage protector. Pressing the test button triggers a simulated leakage current to verify the device's correct operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the installation mechanism of the utility model;

[0019] Figure 3 It is a partial structural diagram of the installation mechanism of the utility model;

[0020] Figure 4 This is a schematic structural diagram of the leakage protector of the utility model.

[0021] In the figure: 1. Mounting mechanism; 101. First mounting plate; 102. Second mounting plate; 103. Guide rod; 104. First clamping block; 105. First mounting sleeve; 106. Mounting rod; 107. Second clamping block; 108. Spring; 109. Screw rod; 110. Second mounting sleeve; 111. Fixing nut; 112. Adjusting knob; 113. Slide groove; 114. Guide wheel; 115. Limit block; 116. Pull ring; 2. Leakage protector; 201. Main body; 202. Terminal block; 203. Reset button; 204. Test button; 3. Buzzer. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-3 The utility model provides a technical solution: a leakage detection device for a low-voltage distribution box in a subway station, comprising a mounting mechanism 1, a plurality of leakage protectors 2 are fixedly mounted on one side of the mounting mechanism 1, the mounting mechanism 1 comprises a first mounting plate 101 and a second mounting plate 102, a plurality of guide rods 103 are fixedly mounted on the bottom of the second mounting plate 102, the plurality of guide rods 103 are slidably mounted on the inside of the first mounting plate 101, a first clamping block 104 is fixedly mounted on the top of the first mounting plate 101, a first mounting sleeve 105 is fixedly mounted on one side of the first mounting plate 101, and the interior of the first mounting sleeve 105 slides A mounting rod 106 is rotatably installed, a second clamping block 107 is fixedly installed on the top of the mounting rod 106, a spring 108 is fixedly installed on the bottom of the second clamping block 107, and the spring 108 is fixedly installed on the top of the first mounting plate 101. A screw 109 is rotatably installed on one side of the second mounting plate 102, and a second mounting sleeve 110 is fixedly installed on one side of the first mounting plate 101. The screw 109 is threadedly connected to the inside of the second mounting sleeve 110, and the outer wall of the screw 109 is threadedly connected to two sets of fixing nuts 111. The two sets of fixing nuts 111 are respectively arranged on the upper and lower sides of the second mounting sleeve 110. The top of the screw 109 is fixedly connected with an adjusting knob 112, and the outer wall of the screw 109 is threadedly connected with two sets of fixing nuts 111. The two sets of fixing nuts 111 are respectively arranged on the upper and lower sides of the second mounting sleeve 110. The top of the screw 109 is fixedly connected with an adjusting knob 112. By adjusting the two sets of fixing nuts 111, the two sets of fixing nuts 111 clamp the second mounting sleeve 110 to fix the screw 109 to prevent loosening, and the adjusting knob 112 is used to facilitate the user to rotate the screw 109. The bottom of the mounting rod 106 is fixedly installed with a limit block 115, and the bottom of the limit block 115 is fixed. A pull ring 116 is fixedly installed, and the displacement distance of the installation rod 106 inside the first installation sleeve 105 is limited by the limit block 115 to prevent the installation rod 106 from falling off from the inside of the first installation sleeve 105. The pull ring 116 is convenient for users to pull the installation rod 106. A slide groove 113 is provided on one side of the first clamping block 104, and several guide wheels 114 are rotatably installed on one side of the second mounting plate 102. The guide wheels 114 are set inside the slide groove 113. Through the cooperation of the slide groove 113 and the guide wheel 114, the device is not in a fixed state, and can be moved left and right on the top of the DIN rail for easy position adjustment.

[0024] The specific implementation method is as follows: the mounting mechanism 1 is initially clamped to the top of the DIN rail by the first clamping block 104, the screw 109 is rotated to change the distance between the first clamping blocks 104 through the cooperation between the screw 109, the second mounting plate 102, and the second mounting sleeve 110, and the second clamping block 107 is clamped to the bottom of the DIN rail. Finally, the device is fixed inside the low-voltage distribution box of the subway station through the cooperation between the first clamping block 104 and the second clamping block 107.

[0025] In the above process, the cooperation between the first mounting sleeve 105, the mounting rod 106, and the spring 108 makes it possible to dismantle the device by only pulling down the mounting rod 106. During this process, the spring 108 provides an upward elastic force for the second clamping block 107 to ensure that the second clamping block 107 is always stuck at the bottom of the DIN rail, and the limit block 115 limits the displacement distance of the mounting rod 106 inside the first mounting sleeve 105 to prevent the mounting rod 106 from falling off from the inside of the first mounting sleeve 105. The pull ring 116 facilitates the user to pull the mounting rod 106, and the cooperation of the slide groove 113 and the guide wheel 114 ensures that the device is not in a fixed state and can be moved left and right at the top of the DIN rail for easy position adjustment. The screw 109 is fixed to prevent loosening by adjusting the two sets of fixing nuts 111 so that the two sets of fixing nuts 111 clamp the second mounting sleeve 110, and the adjusting knob 112 facilitates the user to rotate the screw 109.

[0026] See also Figure 1-4 The present invention provides a technical solution: a leakage detection device for a low-voltage distribution box in a subway station. The leakage protector 2 includes a main body 201, with a plurality of connection terminals 202 provided on both the upper and lower sides of the main body 201. A buzzer 3 is fixedly mounted on one side of the leakage protector 2, which provides a leakage alarm. A reset button 203 is provided on one side of the main body 201, and a test button 204 is provided on one side of the main body 201. The reset button 203 is used to manually reset and restore power, and the test button 204 is used to simulate a leakage condition to test whether the leakage protector 2 is functioning properly. Pressing the test button 204 triggers a simulated leakage current to verify whether the device is functioning correctly.

[0027] The specific implementation method is as follows: the internal circuit of the low-voltage distribution box of the subway station is connected to the main body 201 through the terminal 202, and then the leakage current in the circuit is detected through the main body 201 and the power supply is cut off in the event of a short circuit. During this process, a leakage alarm is issued through the buzzer 3, and the power supply is manually reset and restored through the reset button 203. The test button 204 is used to simulate the leakage condition to test whether the function of the leakage protector 2 is normal.

[0028] Working Principle: When using this leakage detection device for a low-voltage distribution box in a subway station, the mounting mechanism 1 is initially clamped to the top of the DIN rail via the first clamping block 104. The screw 109 is rotated to adjust the distance between the first clamping blocks 104 through the cooperation between the screw 109, the second mounting plate 102, and the second mounting sleeve 110. The second clamping block 107 is clamped to the bottom of the DIN rail. Finally, the device is fixed inside the low-voltage distribution box in the subway station through the cooperation between the first clamping block 104 and the second clamping block 107.

[0029] In the above process, the cooperation between the first mounting sleeve 105, the mounting rod 106, and the spring 108 makes it possible to dismantle the device by only pulling down the mounting rod 106. During this process, the spring 108 provides an upward elastic force for the second clamping block 107 to ensure that the second clamping block 107 is always stuck at the bottom of the DIN rail, and the limit block 115 limits the displacement distance of the mounting rod 106 inside the first mounting sleeve 105 to prevent the mounting rod 106 from falling off from the inside of the first mounting sleeve 105. The pull ring 116 facilitates the user to pull the mounting rod 106, and the cooperation of the slide groove 113 and the guide wheel 114 ensures that the device is not in a fixed state and can be moved left and right on the top of the DIN rail for convenient position adjustment. The screw 109 is fixed to prevent loosening by adjusting the two sets of fixing nuts 111 so that the two sets of fixing nuts 111 clamp the second mounting sleeve 110, and the screw 109 is conveniently rotated by the user by adjusting the knob 112.

[0030] Connect the internal wiring of the subway station's low-voltage distribution box to the main body 201 via terminal blocks 202. Main body 201 then detects leakage current in the circuit and cuts off power in the event of a short circuit. During this process, a buzzer 3 sounds a leakage alarm. A reset button 203 manually resets and restores power. A test button 204 simulates a leakage condition to test the function of the leakage protector 2. Pressing test button 204 triggers a simulated leakage current to verify the device's correct operation.

[0031] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A leakage detection device for a low-voltage distribution box in a subway station, comprising a mounting mechanism (1), wherein a plurality of leakage protectors (2) are fixedly mounted on one side of the mounting mechanism (1), and characterized in that: The mounting mechanism (1) comprises a first mounting plate (101) and a second mounting plate (102), wherein a plurality of guide rods (103) are fixedly mounted on the bottom of the second mounting plate (102), and the plurality of guide rods (103) are slidably mounted inside the first mounting plate (101), a first clamping block (104) is fixedly mounted on the top of the first mounting plate (101), a first mounting sleeve (105) is fixedly mounted on one side of the first mounting plate (101), and a mounting sleeve (105) is slidably mounted inside the first mounting sleeve (105). A rod (106) is provided, a second clamping block (107) is fixedly installed on the top of the mounting rod (106), a spring (108) is fixedly installed on the bottom of the second clamping block (107), the spring (108) is fixedly installed on the top of the first mounting plate (101), a screw rod (109) is rotatably installed on one side of the second mounting plate (102), a second mounting sleeve (110) is fixedly installed on one side of the first mounting plate (101), and the screw rod (109) is threadedly connected to the interior of the second mounting sleeve (110).

2. A subway station low-voltage distribution box leakage detection device according to claim 1, characterized in that: The outer wall of the screw rod (109) is threadedly connected to two sets of fixing nuts (111), and the two sets of fixing nuts (111) are respectively arranged on the upper and lower sides of the second mounting sleeve (110). The top of the screw rod (109) is fixedly connected to an adjusting knob (112).

3. The leakage detection device for a low-voltage distribution box in a subway station according to claim 1, characterized in that: A limit block (115) is fixedly mounted on the bottom of the mounting rod (106), and a pull ring (116) is fixedly mounted on the bottom of the limit block (115).

4. A subway station low-voltage distribution box leakage detection device according to claim 1, characterized in that: A sliding groove (113) is provided on one side of the first clamping block (104), and a plurality of guide wheels (114) are rotatably mounted on one side of the second mounting plate (102), wherein the guide wheels (114) are arranged inside the sliding groove (113).

5. The leakage detection device for low-voltage distribution box in a subway station according to claim 1, characterized in that: The leakage protector (2) comprises a main body (201), and a plurality of connection terminals (202) are provided on both the upper and lower sides of the main body (201).

6. The leakage detection device for a low-voltage distribution box in a subway station according to claim 1, characterized in that: A buzzer (3) is fixedly mounted on one side of the leakage protector (2).

7. A leakage detection device for a low-voltage distribution box in a subway station according to claim 5, characterized in that: A reset button (203) is provided on one side of the main body (201), and a test button (204) is provided on one side of the main body (201).

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