Anti-misoperation device for thermal power plant

Abstract

The utility model relates to the technical field of safety protection of thermal power plants, in particular to an anti-misoperation device of a thermal power plant. The U-shaped rod is arranged to block the closing action of the main switch operating handle, so that accidental closing caused by misoperation of the main switch during maintenance operation is prevented, and the U-shaped rod also plays a certain role in prompting; due to the arrangement of the reminding mechanism, sound-light alarm can be carried out after the operator operates by mistake and damages the U-shaped rod, so that the misoperation of the operator is reminded; the arrangement of the instruction prompting mechanism is convenient for the maintainer to write prompting characters on the writing board after the main switch is switched off during maintenance, so that a person who does not know that the maintenance work wants to operate the main switch is prompted; according to the utility model, maloperation of the main switch is blocked and reminded in a plurality of ways, so that accidental closing of the main switch during maintenance operation is avoided, the working safety of maintenance personnel is protected, and serious consequences such as equipment damage or power grid accidents are avoided.

Description

Technical Field

[0001] This utility model relates to the field of safety protection technology for thermal power plants, specifically a device for preventing misoperation in thermal power plants. Background Technology

[0002] A thermal power plant, or thermal power plant for short, is a factory that uses coal, oil, or natural gas as fuel to produce electricity. In the thermal power generation industry, electrical and automation engineering professionals need to regularly inspect and maintain various electrical equipment. During the maintenance process, there are often cases of novice operators making mistakes, which poses a serious challenge to maintenance personnel. Misoperation often leads to serious consequences such as injury or death of maintenance personnel, equipment damage, and power grid accidents. Misoperation refers to misoperation of the main switch, which necessitates a device to prevent misoperation.

[0003] However, most of the anti-misoperation devices in thermal power plants currently only protect the main switch to prevent staff from accidentally operating it. However, some staff members are unaware of the maintenance procedures for thermal power plants and will directly open the anti-misoperation device and pull up the main switch to restore power when they find that the thermal power plant is without power. This may result in serious consequences such as injury or death of maintenance personnel, equipment damage, and power grid accidents.

[0004] A device for preventing misoperation in a thermal power plant, disclosed in publication number CN211404320U, includes a column with an alarm display screen at its upper end. A mounting plate is installed on one side wall of the column, and an anti-misoperation box is mounted on one side wall of the mounting plate. A control box is located on the side of the column away from the mounting plate, housing an alarm control system electrically connected to the alarm display screen. A movable block is movably connected to the inner wall of the anti-misoperation box, and a diagonal support rod is rotatably connected to one side wall of the movable block. One end of the diagonal support rod is rotatably connected to an intermediate component. A protective side plate is installed inside the anti-misoperation box, with a conductive sheet on one side wall of the protective side plate. A fixed base is fixedly connected to the inner wall of the anti-misoperation box. This invention constitutes a secondary power-off device for a switch, effectively preventing injuries caused by misoperation, offering high safety performance and a more stable and reliable structure.

[0005] While the aforementioned patent effectively avoids harm caused by misoperation, boasts high safety performance, and features a more stable and reliable structure, the device lacks a mechanism to warn of misoperation. For novice operators, unfamiliarity with the site conditions can lead to misoperation, thus compromising safety. Utility Model Content

[0006] The purpose of this utility model is to provide a device to prevent misoperation in thermal power plants, so as to avoid serious consequences such as injury or death of maintenance personnel, equipment damage or power grid accidents caused by workers accidentally pulling the main switch to restore power.

[0007] This utility model discloses an anti-misoperation device for a thermal power plant, comprising a main switch and an anti-misoperation mechanism. The anti-misoperation mechanism includes a rotating shaft, a U-shaped rod, a receiving block, and a quick-release bolt. Two rotating shafts are provided, each fixedly connected to the left and right outer walls of the main switch. The U-shaped rod includes two vertical rods and a horizontal rod. The two vertical rods are fixedly connected to the left and right ends of the horizontal rod, forming a U-shape. The ends of the two vertical rods away from the horizontal rod are rotatably connected to the two rotating shafts. The vertical rods have holes for the rotating shafts to rotatably connect. The horizontal rod is located above or below the main switch operating handle. A receiving block is fixedly connected to one of the vertical rods of the U-shaped rod, and the receiving block has a threaded hole. The quick-release bolt includes a stud and an annular head. The annular head is fixedly connected to the rear end of the stud, and the quick-release bolt is threaded into the threaded hole. After passing through the threaded hole, the quick-release bolt is connected to the outer wall of the main switch. The outer wall of the main switch has holes for the quick-release bolt to connect.

[0008] Furthermore, it includes a reminder mechanism, which includes an alarm switch button, a connecting wire, and an alarm. The alarm switch button is located above or below the main switch. The alarm switch button is electrically connected to the alarm via the connecting wire. A square block is fixedly connected to the outer wall of the alarm. The square block is connected to the mounting bracket for mounting the main switch via screw II. The square block has a through hole for screw II to pass through, and the mounting bracket for mounting the main switch has a screw hole for screw II to be connected.

[0009] Furthermore, it includes a prompting and explanation mechanism, which includes a receiving rod, a locking block, and a writing board. One end of the receiving rod is fixedly connected to the side wall of the main switch, and the locking block is fixedly connected to the end of the receiving rod away from the main switch. Two connecting ropes are fixedly connected to the top surface of the writing board, and the ends of the two connecting ropes away from the writing board are connected to a locking rod. The two connecting ropes are respectively fixedly connected to the left and right ends of the locking rod. The locking rod is located above the writing board and is locked in the locking block. The writing board is located on the side of the main switch, and the writing surface of the writing board faces the same direction as the main switch operating handle.

[0010] Furthermore, two supports are fixedly connected to the top surface of the writing board, and a rotating rod is fixedly connected to each support. A limit plate is rotatably connected to the rotating rod, and a transparent protective plate is fixedly connected to one edge of the bottom surface of the limit plate. The transparent protective plate is located in front of the writing surface of the writing board and covers the writing surface of the writing board.

[0011] Furthermore, a drawer is slidably connected to the top of the writing board, and a pen is placed inside the drawer.

[0012] Furthermore, it includes an installation mechanism, which includes a telescopic plate and a connecting block. The bottom end of the telescopic plate is fixedly connected to the top of the main switch, and the connecting block is fixed to the top of the telescopic plate. The connecting block is connected to the mounting component for installing the main switch by screw I. The connecting block has a through hole for screw I to pass through, and the mounting component for installing the main switch has a screw hole for screw I to connect.

[0013] Furthermore, the installation mechanism includes a limit block and a ball block. The limit block is fixedly connected to the top surface of the main gate, and the ball block includes a rod and a ball head. The rod is fixedly connected to the top surface of the ball head, the upper end of the rod is fixedly connected to the bottom end of the connecting block, and the ball head is rotatably connected to the top of the limit block.

[0014] Furthermore, the alarm switch button is model JH-500E.

[0015] The beneficial effects of this utility model are as follows: The U-shaped rod obstructs the closing action of the main switch operating handle, preventing accidental closing of the main switch due to misoperation during maintenance work. The U-shaped rod itself also serves as a warning. The reminder mechanism can trigger an audible and visual alarm after the operator misoperates and damages the U-shaped rod, thus reminding the operator of the misoperation. The instruction mechanism allows maintenance personnel to write reminder text on the writing board after disconnecting the main switch during maintenance, thus reminding those who are unfamiliar with the maintenance work but want to operate the main switch. This utility model provides multiple obstacles and reminders for the misoperation of the main switch, preventing accidental closing of the main switch during maintenance work, protecting the work safety of maintenance personnel, and avoiding serious consequences such as equipment damage or power grid accidents. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the anti-misoperation mechanism and the reminder mechanism of this utility model;

[0018] Figure 3 This is a schematic diagram illustrating the structure of the mechanism of this utility model.

[0019] Figure 4 This is a schematic diagram of the installation mechanism structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the spherical block structure of this utility model.

[0021] In the diagram: 1. Main switch; 2. Anti-misoperation mechanism; 201. Rotating shaft; 202. U-shaped rod; 203. Receiving block; 204. Threaded hole; 205. Quick-release bolt; 3. Reminder mechanism; 301. Alarm switch button; 302. Connecting wire; 303. Alarm; 4. Square block; 5. Instruction mechanism; 501. Receiving rod; 502. Locking block; 503. Locking rod; 504. Connecting rope; 505. Writing board; 506. Rotating rod; 507. Limiting plate; 508. Transparent protective plate; 509. Drawer box; 510. Pen; 6. Installation mechanism; 601. Telescopic plate; 602. Connecting block; 603. Screw I; 604. Limiting block; 605. Ball block; 7. Screw II. Detailed Implementation

[0022] like Figures 1-5 As shown, this utility model discloses a device for preventing misoperation in a thermal power plant, comprising a main switch 1 and an anti-misoperation mechanism 2. The anti-misoperation mechanism 2 includes a rotating shaft 201, a U-shaped rod 202, a receiving block 203, and quick-release bolts 205. Two rotating shafts 201 are provided, and the two rotating shafts 201 are respectively fixedly connected to the left and right outer walls of the main switch 1. The U-shaped rod 202 includes two vertical rods and one horizontal rod. The two vertical rods are respectively fixedly connected to the left and right ends of the horizontal rod to form a U-shape. The ends of the two vertical rods away from the horizontal rod are rotatably connected to the two rotating shafts 201. The upper vertical rod has a hole for the rotating shaft 201 to be rotatably connected. The horizontal rod is located above or below the operating handle of the main switch 1. A receiving block 203 is fixedly connected to one of the vertical rods of the U-shaped rod 202. The receiving block 203 has a threaded hole 204. The quick-release bolt 205 includes a stud and an annular head. The annular head is fixedly connected to the rear end of the stud. The quick-release bolt 205 is threaded into the threaded hole 204. After passing through the threaded hole 204, the quick-release bolt 205 is connected to the outer wall of the main switch 1. The outer wall of the main switch 1 has a hole for the quick-release bolt 205 to be connected.

[0023] The anti-misoperation mechanism 2 is designed to prevent the main switch 1 from being accidentally closed during maintenance. When the operating handle of the main switch 1 is pushed upwards to close, and when the operating handle of the main switch 1 is pulled down to put the main switch 1 in the open state, the U-shaped rod 202 should be positioned above the operating handle of the main switch 1. The quick-release bolt 205 fixes the position of the U-shaped rod 202 on the main switch 1 to prevent the U-shaped rod 202 from rotating. The crossbar of the U-shaped rod 202 blocks the operating handle of the main switch 1 from being pushed upwards, thus preventing the main switch 1 from closing. When the operating handle of the main switch 1 is pushed downwards to close, and when the operating handle of the main switch 1 is pulled up to put the main switch 1 in the open state, the U-shaped rod 202 should be positioned below the operating handle of the main switch 1. The quick-release bolt 205 fixes the position of the U-shaped rod 202 on the main switch 1 to prevent the U-shaped rod 202 from rotating. The crossbar of the U-shaped rod 202 blocks the operating handle of the main switch 1 from being pushed downwards, thus preventing the main switch 1 from closing.

[0024] The U-shaped lever 202 itself also serves as a certain indication. When the operator sees the U-shaped lever 202 on the main switch 1, they can also know that the main switch 1 should currently be in an inoperable state.

[0025] like Figures 1-2 The embodiment shown describes a structure where the operating handle of the main switch 1 is pushed down to close the circuit. This does not affect the understanding of those skilled in the art as to how the various components should be set when the operating handle of the main switch 1 is pushed up to close the circuit.

[0026] The quick-release bolt 205 can be rotated through the ring head, eliminating the need for other tools and making it easy to install and remove.

[0027] The device includes an alarm mechanism 3, which comprises an alarm switch button 301, a connecting wire 302, and an alarm 303. The alarm switch button 301 is located above or below the main switch 1. The alarm switch button 301 is electrically connected to the alarm 303 via the connecting wire 302. A square block 4 is fixedly connected to the outer wall of the alarm 303. The square block 4 is connected to the mounting component of the main switch 1 via screw II 7. The square block 4 has a through hole for the screw II 7 to pass through, and the mounting component of the main switch 1 has a screw hole for the screw II 7 to be connected. The alarm switch button 301 is model JH-500E.

[0028] The function of the reminder mechanism 3 is to immediately issue an alarm when the main switch 1 is misoperated, alerting the staff. When the operating handle of the main switch 1 is pushed upwards to close the switch, the alarm switch button 301 should be located above the main switch 1. When the operating handle of the main switch 1 is pulled down to open the switch, the U-shaped rod 202 should be located above the operating handle. When the operator mistakenly pushes the operating handle of the main switch 1 upwards to close the switch, the upward push of the operating handle will first collide with the crossbar of the U-shaped rod 202. At this time, the crossbar obstructs the main switch 1 laterally. The staff should be aware of the crossbar of the U-shaped rod 202. The operation handle of the main switch 1 is blocked, thus abandoning the closing action. However, if the operator does not abandon the closing action at this time, but continues to push the operation handle of the main switch 1 upward with force, the connection of the quick-release bolt 205 may be damaged as the operator's operating force increases. When the connection of the quick-release bolt 205 is damaged, the operation handle of the main switch 1 can continue to be pushed upward, causing the U-shaped rod 202 to rotate. Before the operation handle of the main switch 1 is closed into the main switch 1, the crossbar of the U-shaped rod 202 will first contact the alarm switch button 301, thereby triggering the alarm 303 to sound and light an alarm, and once again reminding the operator of the misoperation.

[0029] When the operating handle of main switch 1 is pushed down to close the circuit, alarm switch button 301 should be located below main switch 1. When the operating handle of main switch 1 is pushed up to open the circuit, U-shaped lever 202 should be located below the operating handle of main switch 1. If the operator accidentally pulls the operating handle of main switch 1 down to close the circuit, the downward pull of the operating handle of main switch 1 will first collide with the horizontal bar of U-shaped lever 202. At this time, the horizontal bar will block the main switch 1 laterally. The operator should notice the obstruction of the operating handle of main switch 1 by the horizontal bar of U-shaped lever 202 and thus abandon the attempt to close the circuit. The circuit breaker is activated, but if the operator does not give up the closing action and continues to pull the operating handle of the main switch 1 downwards, the connection of the quick-release bolt 205 may be damaged as the operator's force increases. When the connection of the quick-release bolt 205 is damaged, the operating handle of the main switch 1 can continue to be pulled downwards, causing the U-shaped rod 202 to rotate. Before the operating handle of the main switch 1 is closed into the main switch 1, the crossbar of the U-shaped rod 202 will first contact the alarm switch button 301, thereby triggering the alarm 303 to sound and light an alarm, and once again triggering the trapezoidal mechanism to correct the operator's misoperation.

[0030] The signal of the alarm switch button 301 can also be connected to the switch of the main power supply circuit of the main switch 1, and it can be set that when the trigger of the alarm switch button 301 can control the switch of the main power supply circuit of the main switch 1 to close, thereby further ensuring that no power supply will be generated when the main switch 1 is mistakenly closed.

[0031] After the maintenance work is completed, the U-shaped rod 202 can be removed. After the U-shaped rod 202 is removed, the normal operation of the main switch 1 operating handle will not touch the alarm switch button 301.

[0032] like Figures 1-2 The embodiment shown describes a structure where the operating handle of the main switch 1 is pushed down to close the circuit. This does not affect the understanding of those skilled in the art as to how the various components should be set when the operating handle of the main switch 1 is pushed up to close the circuit.

[0033] This utility model includes a prompting and explanation mechanism 5, which includes a receiving rod 501, a locking block 502, and a writing board 505. One end of the receiving rod 501 is fixedly connected to the side wall of the main switch 1. The locking block 502 is fixedly connected to the end of the receiving rod 501 away from the main switch 1. Two connecting ropes 504 are fixedly connected to the top surface of the writing board 505. The ends of the two connecting ropes 504 away from the writing board 505 are connected to a locking rod 503. The two connecting ropes 504 are respectively fixedly connected to the left and right ends of the locking rod 503. The locking rod 503 is located above the writing board 505 and is engaged with... Inside the card block 502, a writing pad 505 is located on the side of the main switch 1, with the writing surface of the writing pad 505 facing the same direction as the operating handle of the main switch 1; two supports are fixedly connected to the top surface of the writing pad 505, and a rotating rod 506 is fixedly connected to the rotating rod 506, with a limit plate 507 rotatably connected to it; a transparent protective plate 508 is fixedly connected to one edge of the bottom surface of the limit plate 507, and the transparent protective plate 508 is located in front of the writing surface of the writing pad 505, covering the writing surface of the writing pad 505; a drawer 509 is slidably connected to the top of the writing pad 505, and a pen 510 is placed inside the drawer 509.

[0034] The writing board 505 is designed to allow maintenance personnel to write reminder text on it after disconnecting the main switch 1 during maintenance. This serves as a reminder to personnel who are unfamiliar with the maintenance work but want to operate the main switch 1. The transparent protective plate 508 protects the text on the writing board 505 from accidental erasure. The drawer 509 is designed to facilitate the storage of the pen 510. After the maintenance work is completed, the lever 503 can be detached from the lever 502.

[0035] This utility model includes an installation mechanism 6, which includes a telescopic plate 601 and a connecting block 602. The bottom end of the telescopic plate 601 is fixedly connected to the top end of the main switch 1, and the connecting block 602 is fixed to the top end of the telescopic plate 601. The connecting block 602 is connected to the mounting component for mounting the main switch 1 by a screw I 603. The connecting block 602 has a through hole for the screw I 603 to pass through, and the mounting component for mounting the main switch 1 has a screw hole for the screw I 603 to connect. The installation mechanism 6 includes a limit block 604 and a ball block 605. The limit block 604 is fixedly connected to the top surface of the main switch 1, and the ball block 605 includes a rod and a ball head. The rod is fixedly connected to the top surface of the ball head, and the upper end of the rod is fixedly connected to the bottom end of the connecting block 602. The ball head is rotatably connected to the top of the limit block 604.

[0036] The installation mechanism 6 facilitates the installation of the main switch 1 at different installation positions and angles.

[0037] The installation mechanism 6 can be used flexibly according to the actual working conditions. If the main switch 1 is easy to install, the installation mechanism 6 does not need to be set up separately.

Claims

1. A device for preventing misoperation in a thermal power plant, characterized in that: The system includes a main switch (1) and an anti-misoperation mechanism (2). The anti-misoperation mechanism (2) includes a rotating shaft (201), a U-shaped rod (202), a receiving block (203), and a quick-release bolt (205). There are two rotating shafts (201), which are fixedly connected to the left and right outer walls of the main switch (1). The U-shaped rod (202) includes two vertical rods and one horizontal rod. The two vertical rods are fixedly connected to the left and right ends of the horizontal rod to form a U-shape. The ends of the two vertical rods away from the horizontal rod are rotatably connected to the two rotating shafts (201). The vertical rods are equipped with a power supply for the rotating shaft (205). 01) Rotary connection hole, the crossbar is located above or below the operating handle of the main switch (1), a receiving block (203) is fixedly connected to one of the vertical bars of the U-shaped rod (202), the receiving block (203) is provided with a threaded hole (204), the quick release bolt (205) includes a stud and an annular head, the annular head is fixedly connected to the rear end of the stud, the quick release bolt (205) is threaded in the threaded hole (204), the quick release bolt (205) passes through the threaded hole (204) and is connected to the outer wall of the main switch (1), the outer wall of the main switch (1) is provided with a hole for the quick release bolt (205) to be connected.

2. The anti-misoperation device for thermal power plants according to claim 1, characterized in that: It includes a reminder mechanism (3), which includes an alarm switch button (301), a connecting line (302) and an alarm (303). The alarm switch button (301) is located above or below the main switch (1). The alarm switch button (301) is electrically connected to the alarm (303) through the connecting line (302). A square block (4) is fixedly connected to the outer wall of the alarm (303). The square block (4) is connected to the mounting part of the main switch (1) by screw II (7). The square block (4) has a through hole for the screw II (7) to pass through. The mounting part of the main switch (1) has a screw hole for the screw II (7) to be connected.

3. The anti-misoperation device for thermal power plants according to claim 2, characterized in that: The device includes a prompting and explanation mechanism (5), which includes a receiving rod (501), a locking block (502), and a writing board (505). One end of the receiving rod (501) is fixedly connected to the side wall of the main switch (1), and the locking block (502) is fixedly connected to the end of the receiving rod (501) away from the main switch (1). Two connecting ropes (504) are fixedly connected to the top surface of the writing board (505). The ends of the two connecting ropes (504) away from the writing board (505) are connected to a locking rod (503). The two connecting ropes (504) are fixedly connected to the left and right ends of the locking rod (503), respectively. The locking rod (503) is located above the writing board (505) and is locked in the locking block (502). The writing board (505) is located on the side of the main switch (1), and the writing surface of the writing board (505) faces the same direction as the operating handle of the main switch (1).

4. The anti-misoperation device for thermal power plants according to claim 3, characterized in that: The writing board (505) has two supports fixedly connected to the top surface, and a rotating rod (506) is fixedly connected to the rotating rod (506). A limiting plate (507) is rotatably connected to the rotating rod (506). A transparent protective plate (508) is fixedly connected to one edge of the bottom surface of the limiting plate (507). The transparent protective plate (508) is located in front of the writing surface of the writing board (505) and covers the writing surface of the writing board (505).

5. The anti-misoperation device for thermal power plants according to claim 4, characterized in that: The writing board (505) has a drawer (509) slidably connected to the top, and a pen (510) is kept inside the drawer (509).

6. A device for preventing misoperation in a thermal power plant according to any one of claims 1-5, characterized in that: The device includes an installation mechanism (6), which includes a telescopic plate (601) and a connecting block (602). The bottom end of the telescopic plate (601) is fixedly connected to the top end of the main switch (1), and the connecting block (602) is fixed to the top end of the telescopic plate (601). The connecting block (602) is connected to the mounting component of the main switch (1) by screw I (603). The connecting block (602) has a through hole for screw I (603) to pass through, and the mounting component of the main switch (1) has a screw hole for screw I (603) to be connected.

7. The anti-misoperation device for thermal power plants according to claim 6, characterized in that: The installation mechanism (6) includes a limit block (604) and a ball block (605). The limit block (604) is fixedly connected to the top surface of the main gate (1). The ball block (605) includes a rod and a ball head. The rod is fixedly connected to the top surface of the ball head. The upper end of the rod is fixedly connected to the bottom end of the connecting block (602). The ball head is rotatably connected to the top of the limit block (604).

8. The anti-misoperation device for thermal power plants according to claim 2, characterized in that: The alarm switch button (301) is model JH-500E.

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