An optical fiber protection device

Abstract

This utility model discloses a fiber optic anti-overspeed protection device, including a fixed base, a lower-level machine body fixedly installed on the top of the fixed base, a display on one side of the lower-level machine body, an infrared remote control on one side of the display, upright plates fixedly installed on both sides of the bottom of the fixed base, a displacement rod fixedly installed between the two upright plates, and two displacement blocks slidably connected in the middle of the displacement rod. This utility model's fiber optic anti-overspeed protection device, by setting up the displacement rod, displacement blocks, and fixing mechanism, allows the user to adjust the required fixing area of ​​the fixing mechanism by sliding the displacement blocks along the displacement rod. The movable seat slides relative to the lead screw, and the movable seat drives the angle rod to deflect at an angle. The angle rod pushes the angle seat from the top to adjust the fixing height of the fixed platform, making it convenient for the user to adjust the installation height of the lower-level machine according to the usage environment, and improving the flexibility of the entire device.

Description

Technical Field

[0001] This utility model relates to the field of mining equipment technology, specifically to a fiber optic anti-overspeed protection device. Background Technology

[0002] Currently, fiber optic anti-overpass protection devices are mainly used in high-risk power systems such as coal mines. They utilize fiber optic communication technology to achieve rapid fault isolation and anti-overpass tripping, ensuring the stability and safety of the power supply system. Through real-time monitoring of current anomalies via fiber optic networks, when a fault such as a short circuit or overload is detected, the system prioritizes triggering the protection device closest to the fault point, while simultaneously blocking protection devices in upstream or unrelated areas to prevent large-scale power outages. They support single-power-supply systems and multi-power-supply parallel systems, and achieve cross-device communication through Ethernet networking and GOOSE fast messaging, ensuring the coordinated operation of anti-overpass functions in different power supply systems. They are widely used.

[0003] However, traditional fiber optic anti-overpass protection devices have the following drawbacks:

[0004] Currently, the size of the fiber optic anti-over-grade protection device is fixed, which means that the area required for its fixed installation environment is constant. This makes it inconvenient for the lower-level device to be flexibly installed in different usage environments, reducing its flexibility of use. Utility Model Content

[0005] The purpose of this utility model is to provide a fiber optic anti-level-crossing protection device to solve the problem mentioned in the background art that the current fiber optic anti-level-crossing protection device has a fixed size, which means that the area required for its fixed installation environment is fixed, making it inconvenient for the lower-level machine to be flexibly installed in different usage environments, thus reducing its flexibility of use.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a fiber optic anti-over-grade protection device, comprising a fixed base, a lower-level machine body fixedly installed at the top of the fixed base, a display on one side of the lower-level machine body, an infrared remote controller on one side of the display, upright plates fixedly installed on both sides of the bottom of the fixed base, a displacement rod fixedly installed between the two upright plates, two displacement blocks slidably connected to the middle of the displacement rod, a fixing mechanism fixedly installed at the bottom of the two displacement blocks, each fixing mechanism comprising a sliding frame and two angle rods, a lead screw rotatably connected inside the sliding frame, two movable seats slidably connected to the sliding frame being threadedly connected to the surface of the lead screw, the bottom ends of the two movable seats being rotatably connected to the top ends of the two angle rods, angle seats being rotatably connected to the bottom ends of the two angle rods, a fixing platform fixedly installed at the bottom between the two angle seats, and threaded holes being opened at the four corners of the top of the fixing platform;

[0007] The lower-level machine's 9-Ua pin is connected to one end of silicon diode VD1-6 and one end of low-voltage fuse FU4. The lower-level machine's 10-Ub pin is connected to one end of silicon diode VD1-6 and one end of low-voltage fuse FU5. The lower-level machine's 11-Uc pin is connected to one end of silicon diode VD1-6 and one end of low-voltage fuse FU6. The lower-level machine's 13-Un pin, the other end of low-voltage fuse FU4, the other end of low-voltage fuse FU5, and the other end of low-voltage fuse FU6 are all connected to one end of voltage transformer TV. The other end of voltage transformer TV is connected to one end of high-voltage fuse FU1, one end of high-voltage fuse FU2, and one end of high-voltage fuse FU3. The lower-level machine's 12-Uo pin is connected to one end of leakage current test button SB4. The other end of leakage current test button SB4 is connected to the end of voltage transformer TV directly opposite it. The 1-la pin of the lower-level machine, the 3-lb pin of the lower-level machine body, and the 5-lc pin of the lower-level machine body are all connected to one end of the current transformer TA2. The 2-la pin, the 4-lb pin, the 6-lc pin of the lower-level machine body, and the other end of the current transformer TA2 are all grounded. The 7-lo pin of the lower-level machine body is connected to the K1 pin of the zero-sequence current transformer TA3. The S pin of the zero-sequence current transformer TA3 is connected to one end of the terminating resistor RJ1 and one end of the capacitor C. The D pin of the zero-sequence current transformer TA3 and the 8-lo pin of the lower-level machine body are all grounded. The other end of the terminating resistor RJ1 and the other end of the capacitor C are both connected to the end opposite to the leakage test button SB4. The other ends of the high-voltage fuse FU1, the high-voltage fuse FU2, and the high-voltage fuse FU3 are all connected to one end of the circuit breaker auxiliary node QF and one end of the disconnecting switch QS.

[0008] Preferably, both sliding frames are rotatably connected to handwheels connected to lead screws. When the user rotates the handwheels, the handwheels drive the lead screws to rotate. The lead screws have two threads in opposite directions with their own center line as the dividing line. The threads on the surface of the lead screws match the threads on the inner walls of the two movable seats. The two movable seats are limited by the sliding frames that match their shape and size, so the two movable seats slide relative to each other along the lead screws. During the sliding process, the movable seats drive the angle rod to deflect at an angle. The angle rod pushes the angle seat from the top to adjust the fixed height of the fixed platform. The user uses screws to pass through the threaded holes to fix the fixed platform, thus completing the fixation of the lower machine body.

[0009] Preferably, the top ends of the two sliding frames are respectively fixedly connected to the two displacement blocks, and the fixing mechanism is installed on the displacement blocks through the sliding frames.

[0010] Preferably, four debugging buttons arranged in a diamond pattern are fixedly installed at the top of the front of the infrared remote control, a confirmation button is fixedly installed on one side of the bottom of the front of the infrared remote control, a cancel button is fixedly installed on the other side of the bottom of the front of the infrared remote control, and a reset button is fixedly installed in the middle of the front of the infrared remote control.

[0011] Preferably, a hanging plate is fixedly installed at the top of the display, and hanging grooves are provided at both ends of one side of the hanging plate, and a positioning groove is provided in the middle of one side of the hanging plate, so that the user can suspend and fix the display through the positioning groove or the hanging groove.

[0012] Preferably, a display screen is fixedly installed at the top of the front of the display, and several indicator lights are fixedly installed at the bottom of the front of the display. Users can observe the indicator lights to understand the working status of the display, and observe the display screen to understand the protection position and protection information.

[0013] Preferably, both displacement blocks have threaded screws on their surfaces, and both displacement blocks are fixedly connected to the displacement rod by the fixing screws. The user slides the displacement blocks along the displacement rod to adjust the fixed position of the fixing mechanism, and then the user tightens the fixing screws to fix the displacement blocks on the displacement rod.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] By setting up a displacement rod, a displacement block, and a fixing mechanism, the user can slide the displacement block along the displacement rod to adjust the fixed area required by the fixing mechanism. The movable seat slides relative to the lead screw, and the movable seat drives the angle rod to deflect at an angle. The angle rod pushes the angle seat from the top to adjust the fixed height of the fixed platform. This allows the user to adjust the installation height of the lower unit according to the usage environment, improving the flexibility of the entire device. Attached Figure Description

[0016] Figure 1 This is a side view of the present invention;

[0017] Figure 2 This is a side view of the fixing mechanism of this utility model;

[0018] Figure 3 This is a perspective view of the infrared remote control of this utility model;

[0019] Figure 4 This is a perspective view of the display of this utility model;

[0020] Figure 5 This is a schematic diagram of the anti-over-level tripping principle of this utility model;

[0021] Figure 6This is one of the schematic diagrams of this utility model;

[0022] Figure 7 This is the second schematic diagram of the present invention.

[0023] In the diagram: 1. Infrared remote control; 2. Display; 3. Lower unit main body; 4. Fixed base; 5. Vertical plate; 6. Displacement block; 7. Displacement rod; 8. Fixing mechanism; 81. Sliding frame; 82. Movable seat; 83. Lead screw; 84. Angle rod; 85. Angle seat; 86. Fixed platform; 87. Threaded hole; 88. Handwheel; 9. Fixing screw; 10. Debug button; 11. Confirm button; 12. Cancel button; 13. Reset button; 14. Suspension plate; 15. Suspension groove; 16. Positioning groove; 17. Display screen; 18. Indicator light. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0025] Please see Figure 1-7 This utility model provides a fiber optic anti-override protection device, including a fixed base 4, a lower computer body 3 fixedly installed on the top of the fixed base 4, a display 2 on one side of the lower computer body 3, an infrared remote controller 1 on one side of the display 2, upright plates 5 fixedly installed on both sides of the bottom of the fixed base 4, a displacement rod 7 fixedly installed between the two upright plates 5, two displacement blocks 6 slidably connected in the middle of the displacement rod 7, a fixing mechanism 8 fixedly installed at the bottom of the two displacement blocks 6, each fixing mechanism 8 including a sliding frame 81 and two angle rods 84, a lead screw 83 rotatably connected inside the sliding frame 81, two movable seats 82 slidably connected to the sliding frame 81 threadedly connected to the surface of the lead screw 83, the bottom ends of the two movable seats 82 respectively rotatably connected to the top ends of the two angle rods 84, the bottom ends of the two angle rods 84 rotatably connected to angle seats 85, a fixing platform 86 fixedly installed at the bottom between the two angle seats 85, and threaded holes 87 opened at the four corners of the top of the fixing platform 86.

[0026] Both sliding frames 81 are rotatably connected to handwheels 88 that are connected to lead screws 83. When the user turns the handwheels 88, the handwheels 88 drive the lead screws 83 to rotate. The lead screws 83 have two threads in opposite directions with their own center line as the dividing line. The threads on the surface of the lead screws 83 match the threads on the inner walls of the two movable seats 82. The two movable seats 82 are limited by the sliding frames 81 that match their shape and size, so the two movable seats 82 slide relative to each other along the lead screws 83. During the sliding process, the movable seats 82 drive the angle rod 84 to deflect at an angle. The angle rod 84 pushes the angle seat 85 from the top to adjust the fixed height of the fixed platform 86. The user uses screws to pass through the threaded holes 87 to fix the fixed platform 86, thus completing the fixation of the lower machine body 3.

[0027] The top ends of the two sliding frames 81 are fixedly connected to the two displacement blocks 6 respectively, and the fixing mechanism 8 is installed on the displacement blocks 6 through the sliding frames 81.

[0028] Four debugging buttons 10 arranged in a diamond pattern are fixedly installed at the top of the front of the infrared remote controller 1. A confirmation button 11 is fixedly installed on one side of the bottom of the front of the infrared remote controller 1. A cancel button 12 is fixedly installed on the other side of the bottom of the front of the infrared remote controller 1. A reset button 13 is fixedly installed in the middle of the front of the infrared remote controller 1.

[0029] A hanging plate 14 is fixedly installed on the top of the monitor 2. Both ends of one side of the hanging plate 14 are provided with hanging grooves 15, and a positioning groove 16 is provided in the middle of one side of the hanging plate 14. The user hangs and fixes the monitor 2 through the positioning groove 16 or the hanging groove 15.

[0030] A display screen 17 is fixedly installed at the top of the front of the display 2, and several indicator lights 18 are fixedly installed at the bottom of the front of the display 2. Users can observe the indicator lights 18 to understand the working status of the display 2, and observe the display screen 17 to understand the protection position and protection information.

[0031] Both displacement blocks 6 have threaded fixing screws 9 on their surfaces. Both displacement blocks 6 are fixedly connected to the displacement rod 7 by fixing screws 9. The user slides the displacement blocks 6 along the displacement rod 7 to adjust the fixed position of the fixing mechanism 8. Then the user tightens the fixing screws 9 to fix the displacement blocks 6 on the displacement rod 7.

[0032] In this embodiment, during use: the user slides the displacement block 6 along the displacement rod 7 to adjust the fixed position of the fixing mechanism 8. Then, the user tightens the fixing screw 9 to fix the displacement block 6 onto the displacement rod 7. The user rotates the handwheel 88, which drives the lead screw 83 to rotate. The lead screw 83 has two threads in opposite directions with its own center line as the dividing line. The threads on the surface of the lead screw 83 match the threads on the inner walls of the two movable seats 82. The two movable seats 82 are limited by the sliding frame 81, which matches its shape and size. Therefore, the two movable seats 82 move along the lead screw 83. During the sliding process of the movable seat 82, the movable seat 82 drives the angle rod 84 to deflect at an angle. The angle rod 84 pushes the angle seat 85 from the top, adjusting the fixed height of the fixed platform 86. The user uses screws to fix the fixed platform 86 through the threaded hole 87, completing the fixation of the lower-level machine body 3. The infrared remote control 1 is an intelligent input device for the integrated protector. The user can complete various local operations without turning on the high-voltage switch or interrupting the power supply. During normal operation, the LCD display 2 automatically cycles through the primary values ​​of various telemetry measurements and some protection analog quantities. Refer to the instruction manual. Figure 5 The fiber optic interface in the protection device is connected point-to-point to the anti-overlap controller SN-5310 of bus I and bus II. All instantaneous overcurrent protection devices can be set to zero time limit. When a short-circuit fault occurs in the system, the relevant protection devices start simultaneously and transmit the protection fault information to the upstream incoming protection device through the SN-5310 anti-overlap controller. When the protection setting value is reached, the protection device closest to the fault point operates. This device has a self-test function, performing real-time channel detection on the connected fiber optic interface. For leakage current protection, when the zero-sequence current measurement value is greater than the leakage current protection setting value, the timer starts. If this continues until the corresponding set time limit, and the leakage current protection enable / disable control word is in the enabled state, an alarm signal is issued. If the protection trip enable / disable control word is also in the enabled state, the circuit breaker is tripped, and the corresponding SOE event is recorded and uploaded. If the current returns within the set time limit, the timer is reset. To prevent false protection operation due to abnormal voltage detected by the CPU caused by PT disconnection, the device is equipped with a PT disconnection check function, which can be enabled / disabled through the protection control word, referring to the attached manual. Figure 6-7The 9-Ua pin of the lower-level machine body 3 is connected to one end of the silicon diode VD1-6 and one end of the low-voltage fuse FU4. The 10-Ub pin of the lower-level machine body 3 is connected to one end of the silicon diode VD1-6 and one end of the low-voltage fuse FU5. The 11-Uc pin of the lower-level machine body 3 is connected to one end of the silicon diode VD1-6 and one end of the low-voltage fuse FU6. The 13-Un pin of the lower-level machine body 3 is connected to the other end of the low-voltage fuse FU4. The other ends of low-voltage fuses FU5 and FU6 are connected to one end of voltage transformer TV. The other end of voltage transformer TV is connected to one end of high-voltage fuses FU1, FU2, and FU3. Pin 12-Uo of the lower-level machine body 3 is connected to one end of leakage current test button SB4. The other end of leakage current test button SB4 is connected to the end of voltage transformer TV directly opposite it. The 1-la pin of the lower-level main body 3, the 3-lb pin of the lower-level main body 3, and the 5-lc pin of the lower-level main body 3 are all connected to one end of the current transformer TA2. The 2-la pin, the 4-lb pin, the 6-lc pin of the lower-level main body 3, and the other end of the current transformer TA2 are all grounded. The 7-lo pin of the lower-level main body 3 is connected to the K1 pin of the zero-sequence current transformer TA3. The S pin of the zero-sequence current transformer TA3 is connected to one end of the terminating resistor RJ1 and one end of the capacitor C. The D pin of the zero-sequence current transformer TA3 and the 8-lo pin of the lower-level main body 3 are all grounded. The other end of the terminating resistor RJ1 and the other end of the capacitor C are both connected to the end opposite to the leakage test button SB4. The other ends of the high-voltage fuse FU1, the high-voltage fuse FU2, and the high-voltage fuse FU3 are all connected to one end of the circuit breaker auxiliary node QF and one end of the disconnecting switch QS.

[0033] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An optical fibre protection device against overstep, comprising a fixed base (4), characterised in that: The lower computer body (3) is fixedly installed on the top of the fixed base (4). A display (2) is provided on one side of the lower computer body (3). An infrared remote controller (1) is provided on one side of the display (2). Upright plates (5) are fixedly installed on both sides of the bottom of the fixed base (4). A displacement rod (7) is fixedly installed between the two upright plates (5). Two displacement blocks (6) are slidably connected in the middle of the displacement rod (7). A fixing mechanism (8) is fixedly installed at the bottom of each of the two displacement blocks (6). Each of the two fixing mechanisms (8) includes a sliding frame (81). The sliding frame (81) is rotatably connected to two angle rods (84). The surface of the screw rod (83) is threaded with two movable seats (82) that are slidably connected to the sliding frame (81). The bottom ends of the two movable seats (82) are rotatably connected to the top ends of the two angle rods (84). The bottom ends of the two angle rods (84) are rotatably connected to angle seats (85). A fixed platform (86) is fixedly installed at the bottom end between the two angle seats (85). Threaded holes (87) are opened at the four corners of the top end of the fixed platform (86). The 9-Ua pin of the lower-level machine body (3) is connected to one end of the silicon diode VD1-6 and one end of the low-voltage fuse FU4. The 10-Ub pin of the lower-level machine body (3) is connected to one end of the silicon diode VD1-6 and one end of the low-voltage fuse FU5. The 11-Uc pin of the lower-level machine body (3) is connected to one end of the silicon diode VD1-6 and one end of the low-voltage fuse FU6. The 13-Un pin of the lower-level machine body (3) is connected to the other end of the low-voltage fuse FU4. The other end of the low-voltage fuse FU5 and the other end of the low-voltage fuse FU6 are all connected to one end of the voltage transformer TV. The other end of the voltage transformer TV is connected to one end of the high-voltage fuse FU1, one end of the high-voltage fuse FU2 and one end of the high-voltage fuse FU3. The 12-Uo pin of the lower-level machine body (3) is connected to one end of the leakage test button SB4. The other end of the leakage test button SB4 is connected to the end of the voltage transformer TV that is directly opposite it. The lower-level machine body (3) The 1-la pin, the 3-lb pin of the lower-level machine body (3), and the 5-lc pin of the lower-level machine body (3) are all connected to one end of the current transformer TA2. The 2-la pin, the 4-lb pin, the 6-lc pin of the lower-level machine body (3), and the other end of the current transformer TA2 are all grounded. The 7-lo pin of the lower-level machine body (3) is connected to the K1 pin of the zero-sequence current transformer TA3. The S terminal is connected to one end of the terminal resistor RJ1 and one end of the capacitor C. The D terminal of the zero-sequence current transformer TA3 and the 8-lo terminal of the lower-level machine body (3) are both grounded. The other end of the terminal resistor RJ1 and the other end of the capacitor C are both connected to the end opposite to the leakage test button SB4. The other end of the high-voltage fuse FU1, the other end of the high-voltage fuse FU2 and the other end of the high-voltage fuse FU3 are all connected to one end of the circuit breaker auxiliary node QF and one end of the disconnecting switch QS.

2. The fiber optic anti-overspeed protection device according to claim 1, characterized in that: Both of the sliding frames (81) are rotatably connected to handwheels (88) that are connected to lead screws (83).

3. The fiber optic anti-overspeed protection device according to claim 1, characterized in that: The top ends of the two sliding frames (81) are respectively fixedly connected to two displacement blocks (6).

4. The apparatus of claim 1 wherein: Four debugging buttons (10) arranged in a diamond shape are fixedly installed on the top of the front of the infrared remote controller (1). A confirmation button (11) is fixedly installed on one side of the bottom of the front of the infrared remote controller (1). A cancel button (12) is fixedly installed on the other side of the bottom of the front of the infrared remote controller (1). A reset button (13) is fixedly installed in the middle of the front of the infrared remote controller (1). ​ 5. The fiber optic anti-overspeed protection device according to claim 1, characterized in that: The top of the display (2) is fixedly installed with a hanging plate (14), and both ends of one side of the hanging plate (14) are provided with hanging grooves (15), and the middle of one side of the hanging plate (14) is provided with a positioning groove (16).

6. The fiber optic anti-overspeed protection device according to claim 1, characterized in that: The display screen (17) is fixedly installed at the top of the front of the display (2), and several indicator lights (18) are fixedly installed at the bottom of the front of the display (2).

7. The fiber optic anti-overspeed protection device according to claim 1, characterized in that: The surface of each of the two displacement blocks (6) is threadedly connected with a fixing screw (9), and the two displacement blocks (6) are fixedly connected with the displacement rod (7) through the fixing screws (9).

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