Safety explosion-proof device for liquid resistance starting cabinet

Abstract

The utility model provides a kind of liquid resistance starting cabinet safety explosion-proof device, it is related to liquid resistance starting cabinet field, including liquid resistance starting cabinet, the liquid resistance starting cabinet includes baffle and water tank in the inside of liquid resistance starting cabinet, the baffle is fixedly connected in the inside of liquid resistance starting cabinet transversely;Fixed box, the fixed box is fixedly connected at the right side of water tank;Release assembly;Normal water level of electrolyte should be in two-thirds of water tank, when using the process of liquid resistance starting cabinet operation, float continuously floats on electrolyte, makes detection rod drive fixed disc upwards, detects the interval between fixed disc and baffle by range sensor, when interval is short, it represents that water level is too high, when water level is too high, range sensor will signal transmission into electromagnetic valve controller, then signal transmission into first electromagnetic valve by electromagnetic valve controller, open first electromagnetic valve, make redundant electrolyte flow into the inside of fixed box.

Description

Technical Field

[0001] This utility model relates to the field of liquid resistance starter cabinets, and in particular to a safety explosion-proof device for liquid resistance starter cabinets. Background Technology

[0002] Liquid resistance starter cabinets, also known as water resistance cabinets, are motor starting devices that have been widely used in recent years. They mainly consist of a water tank, plates (moving plates and stationary plates), a transmission mechanism, a limit mechanism (limit switches), and related electrical components (such as relays, time relays, contactors, buttons, indicator lights, etc.).

[0003] In related technologies, the liquid resistance tank inside the liquid resistance starter cabinet experiences changes in water level during use and subsequent electrolyte filling. If the water level is too high, liquid overflow may occur when the electrodes move, leading to phase-to-phase short circuits, arcing, or explosions. If the water level is too low, the electrolyte concentration may change, affecting conductivity and causing abnormal changes in resistance value. This makes it impossible to adjust the resistance in the intended manner, affecting the motor's starting process and performance.

[0004] Therefore, it is necessary to provide a safety explosion-proof device for liquid resistance starter cabinets to solve the above problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a safety explosion-proof device for a liquid resistance starter cabinet.

[0006] This utility model provides a safety explosion-proof device for a liquid resistance starter cabinet, comprising:

[0007] A liquid resistance starter cabinet, comprising a partition and a water tank located inside the liquid resistance starter cabinet, wherein the partition is horizontally fixedly connected inside the liquid resistance starter cabinet;

[0008] A fixed box is fixedly connected to the right side of the water tank;

[0009] The release assembly includes a first solenoid valve, which is connected to the side wall of the water tank, and the end of the first solenoid valve away from the water tank is connected to the left side of the fixed box.

[0010] The detection component includes a float located inside a water tank. A detection rod is fixedly connected to the top of the float. One end of the detection rod slides through the top of the water tank, and a fixed plate is fixedly connected to the extended end of the detection rod. A distance sensor is fixedly connected to the top of the fixed plate.

[0011] Preferably, the release assembly further includes a submersible pump located inside the fixed tank. The output end of the submersible pump is connected to a water pipe, the top of the water pipe is connected to a three-way solenoid valve, one end of the three-way solenoid valve is connected to a return pipe, and the top end of the return pipe is connected to the side wall of the water tank.

[0012] Preferably, it also includes a dispensing component, which includes a filter tube rotatably connected to the top of the fixed box, the bottom of the filter tube extending into the interior of the fixed box, multiple blades fixedly connected to the side wall of the filter tube, the other end of the three-way solenoid valve connected to a nozzle, and a limit plate horizontally fixedly connected inside the fixed box.

[0013] Preferably, a filter box is fixedly connected to the bottom of the inner wall of the water tank, the filter box is located outside the first solenoid valve, and a filter screen is slidably connected inside the filter box.

[0014] Preferably, the top of the water tank is fixedly connected to two sliding rods, and the two sliding rods are slidably connected to the fixed plate.

[0015] Preferably, the plurality of blades are evenly distributed in a ring, and a cavity for containing electrolyte can be formed between the bottom of the screen and the fixed box.

[0016] Compared with related technologies, the safety explosion-proof device for a liquid resistance starter cabinet provided by this utility model has the following advantages:

[0017] 1. The normal electrolyte level should be two-thirds full in the tank. During operation of the liquid resistance starter cabinet, the float continuously floats on the electrolyte, causing the detection rod to move the fixed plate upwards. The distance sensor detects the distance between the fixed plate and the partition. When the distance decreases, it indicates that the water level is too high. When the water level is too high, the distance sensor transmits a signal to the solenoid valve controller, which then transmits the signal to the first solenoid valve, opening the first solenoid valve and allowing excess electrolyte to flow into the fixed tank. This effectively solves the problem of liquid overflow causing phase-to-phase short circuits, arcing, or explosions when the electrode moves due to excessive water level. Conversely, excessively low water level will cause changes in electrolyte concentration, affecting conductivity and leading to abnormal resistance values, which in turn affects the motor's starting process and performance. The system can automatically drain excess electrolyte and automatically replenish electrolyte, ensuring the stable and safe operation of the liquid resistance starter cabinet. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a three-dimensional structural diagram of the water tank of this utility model;

[0020] Figure 3 This is a three-dimensional cross-sectional structural diagram of the present invention;

[0021] Figure 4 This is a schematic diagram of the three-dimensional cross-section of the water tank of this utility model.

[0022] The following components are labeled in the diagram: 1. Liquid resistance starter cabinet; 2. Partition plate; 3. Water tank; 4. Fixing box; 5. Release assembly; 51. First solenoid valve; 52. Submersible pump; 53. Water pipe; 54. Three-way solenoid valve; 55. Return pipe; 6. Detection assembly; 61. Float; 62. Detection rod; 63. Fixing plate; 64. Distance sensor; 7. Adjustment assembly; 71. Filter screen tube; 72. Blade; 73. Nozzle; 74. Screen; 8. Filter box; 9. Filter screen; 10. Slide rod. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Please refer to the following: Figures 1 to 4 A safety explosion-proof device for a liquid resistance starter cabinet, comprising:

[0025] The liquid resistance starter cabinet 1 includes a partition 2 and a water tank 3 located inside the liquid resistance starter cabinet 1. The partition 2 is horizontally fixed inside the liquid resistance starter cabinet 1.

[0026] Fixed box 4 is fixedly connected to the right side of water tank 3;

[0027] Release component 5, release component 5 includes a first solenoid valve 51, the first solenoid valve 51 is connected to the side wall of the water tank 3, and the end of the first solenoid valve 51 away from the water tank 3 is connected to the left side of the fixed box 4.

[0028] The detection component 6 includes a float 61 located inside the water tank 3. A detection rod 62 is fixedly connected to the top of the float 61. One end of the detection rod 62 slides through the top of the water tank 3, and a fixed plate 63 is fixedly connected to the extended end of the detection rod 62. A distance sensor 64 is fixedly connected to the top of the fixed plate 63.

[0029] The release assembly 5 also includes a submersible pump 52, which is located inside the fixed box 4. The output end of the submersible pump 52 is connected to a water pipe 53, and the top of the water pipe 53 is connected to a three-way solenoid valve 54. One end of the three-way solenoid valve 54 is connected to a return pipe 55, and the top end of the return pipe 55 is connected to the side wall of the water tank 3.

[0030] It also includes a mixing component 7, which includes a filter tube 71. The filter tube 71 is rotatably connected to the top of the fixed box 4. The bottom of the filter tube 71 extends into the interior of the fixed box 4. Multiple blades 72 are fixedly connected to the side wall of the filter tube 71. The other end of the three-way solenoid valve 54 is connected to a nozzle 73. A screen 74 is horizontally fixedly connected inside the fixed box 4.

[0031] In the specific implementation process, when using the liquid resistance starter cabinet 1, it is first necessary to confirm the standard position of the electrolyte. The water tank 3 is marked with water level lines, and the normal electrolyte level should be two-thirds full. During operation of the liquid resistance starter cabinet 1, the float 61 continuously floats on the electrolyte, causing the detection rod 62 to move the fixed plate 63 upwards. Depending on the specific usage, a preset value range is set for the distance sensor 64. The distance sensor 64 detects the distance between the fixed plate 63 and the partition 2. When the distance decreases, the system detects the distance between the fixed plate 63 and the partition 2. When the spacing is smaller than the preset value of the ranging sensor 64, it indicates that the water level is too high. When the water level is too high, the ranging sensor 64 transmits a signal to the solenoid valve controller, which then transmits the signal to the first solenoid valve 51, opening it and allowing excess electrolyte to flow into the fixed tank 4. Simultaneously, the float 61 monitors the water level in real time. When the water level reaches the designated position, the ranging sensor 64 sends a signal to the solenoid valve controller, which then transmits a signal to the first solenoid valve 51 to close it. Conversely, when the water level is too low... The distance between the fixed plate 63 and the partition 2 is detected by the distance sensor 64. When the distance increases, exceeding the preset value of the distance sensor 64, it indicates that the water level is too low. If the water level is too low, the user can place the prepared clean water and electrolyte powder into the filter tube 71. The distance sensor 64 transmits the signal to the controller, which then transmits the signal to the submersible pump 52. The submersible pump 52 then starts, transferring the electrolyte to the three-way solenoid valve 54. The solenoid valve controller then transmits the signal to the three-way solenoid valve. Valve 54 opens the opening at the nozzle 73, and the water jet from the nozzle 73 drives the blade 72 to rotate the filter tube 71. The filter tube 71 can fully mix the electrolytic powder and clean water. Then, the opening of the three-way solenoid valve 54 connected to the nozzle 73 is closed, and the opening connected to the return pipe 55 is opened, so that the prepared electrolyte can be transferred to the inside of the water tank 3 to replenish the liquid level. This can prevent the liquid from overflowing when the water level changes and the electrodes move, which could cause phase-to-phase short circuits, arcing, or explosions, thus achieving a highly efficient explosion-proof effect.

[0032] Further explanation is needed: the ranging sensor 64 is an ultrasonic ranging sensor, which can be connected to the solenoid valve controller. The first solenoid valve 51, the three-way solenoid valve 54, and the submersible pump 52 are connected to the solenoid valve controller. When the ranging sensor 64 detects a decrease in distance (too high water level), the controller needs to delay for 1-2 seconds to confirm signal stability before triggering the solenoid valve to open. The ranging sensor 64 needs to be calibrated with a standard gauge block every 3 months (error ≤ ±0.5mm). The detection component 6 needs to be tested for operation every 6 months (simulating high / low liquid level triggering alarm). The electrolyte needs to be tested for conductivity every 6 months. If it deviates from the range, it needs to be remixed. When replacing, the water tank 3 needs to be emptied first and rinsed 3 times with deionized water (to prevent residual impurities from affecting conductivity). The first solenoid valve 51 and the three-way solenoid valve 54 need to be explosion-proof (Exd II CT6, suitable for high-risk environments such as hydrogen).

[0033] refer to Figure 4 As shown, a filter box 8 is fixedly connected to the bottom of the inner wall of the water tank 3. The filter box 8 is located outside the first solenoid valve 51, and a filter screen 9 is slidably connected inside the filter box 8.

[0034] Furthermore, during the discharge of the electrolyte inside the water tank 3 through the first solenoid valve 51, the scale in the electrolyte can be effectively isolated by the filter screen 9. This can prevent the accumulation of scale from clogging the submersible pump 52, thereby ensuring the high safety and reliability of the entire system.

[0035] refer to Figure 3 As shown, two sliding rods 10 are fixedly connected to the top of the water tank 3, and the two sliding rods 10 are slidably connected to the fixed plate 63.

[0036] Furthermore, during the up-and-down sliding of the fixed plate 63, the user can use the slide bar 10 to achieve the vertical limiting function of the fixed plate 63. This design cleverly solves the problem of the fixed plate 63 shaking during use, thereby ensuring the overall stability of the equipment. This excellent stability not only improves the service life of the equipment, but also enhances the user's sense of security and comfort during operation.

[0037] refer to Figure 4 As shown, multiple blades 72 are evenly distributed in a ring, and a cavity for containing electrolyte can be formed between the bottom of the screen 74 and the fixed box 4.

[0038] Furthermore, in practical applications, the use of multiple blades 72 can significantly improve the performance of the equipment. The water jet from the nozzle 73 powerfully impacts these blades 72, thereby driving the filter tube 71 to rotate evenly. This rotation helps to ensure that the electrolytic powder and clean water can be fully and evenly mixed. Due to the uniformity of the mixing process, the mixing efficiency is significantly improved, thereby improving the overall treatment effect.

[0039] The working principle of the safety explosion-proof device for a liquid resistance starter cabinet provided by this utility model is as follows: The normal water level of the electrolyte should be two-thirds of the water tank 3. During the operation of the liquid resistance starter cabinet 1, the float 61 continuously floats on the electrolyte, causing the detection rod 62 to drive the fixed plate 63 upward. The distance between the fixed plate 63 and the partition 2 is detected by the distance sensor 64. When the distance decreases, it means that the water level is too high. When the water level is too high, the distance sensor 64 transmits the signal to the solenoid valve controller, and then the solenoid valve controller transmits the signal to the first solenoid valve 51, opening the first solenoid valve 51 and allowing the excess electrolyte to flow into the interior of the fixed box 4.

Claims

1. A safety explosion-proof device for a liquid resistance starter cabinet, characterized in that, include: A liquid resistance starter cabinet, comprising a partition and a water tank located inside the liquid resistance starter cabinet, wherein the partition is horizontally fixedly connected inside the liquid resistance starter cabinet; A fixed box is fixedly connected to the right side of the water tank; The release assembly includes a first solenoid valve, which is connected to the side wall of the water tank, and the end of the first solenoid valve away from the water tank is connected to the left side of the fixed box. The detection component includes a float located inside a water tank. A detection rod is fixedly connected to the top of the float. One end of the detection rod slides through the top of the water tank, and a fixed plate is fixedly connected to the extended end of the detection rod. A distance sensor is fixedly connected to the top of the fixed plate.

2. The safety explosion-proof device for liquid resistance starter cabinet according to claim 1, characterized in that, The release assembly also includes a submersible pump located inside the fixed tank. The output end of the submersible pump is connected to a water pipe, and the top of the water pipe is connected to a three-way solenoid valve. One end of the three-way solenoid valve is connected to a return pipe, and the top end of the return pipe is connected to the side wall of the water tank.

3. The safety explosion-proof device for the liquid resistance starter cabinet according to claim 2, characterized in that, It also includes a mixing component, which includes a filter tube rotatably connected to the top of the fixed box, the bottom of the filter tube extending into the interior of the fixed box, multiple blades fixedly connected to the side wall of the filter tube, a nozzle connected to the other end of the three-way solenoid valve, and a screen horizontally fixedly connected inside the fixed box.

4. The safety explosion-proof device for liquid resistance starter cabinet according to claim 2, characterized in that, A filter box is fixedly connected to the bottom of the inner wall of the water tank. The filter box is located outside the first solenoid valve, and a filter screen is slidably connected inside the filter box.

5. The safety explosion-proof device for liquid resistance starter cabinet according to claim 1, characterized in that, Two sliding rods are fixedly connected to the top of the water tank, and the two sliding rods are slidably connected to the fixed plate.

6. The safety explosion-proof device for the liquid resistance starter cabinet according to claim 3, characterized in that, The multiple blades are evenly distributed in a ring, and a cavity for containing electrolyte can be formed between the bottom of the screen and the fixed box.

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