Novel smoke exhaust valve switch locking device
By designing a new type of smoke exhaust valve switch locking device, the operation of high-level valves is simplified by using remote transmission buttons and hand cranks, solving the problem of difficulty in manual opening and closing reset, and realizing safe and efficient valve control.
Patent Information
- Application Number
- CN202511800204.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-02
- Publication Date
- 2026-02-17
AI Technical Summary
In the M310 nuclear power unit, the fire exhaust valves installed at high positions are difficult to open, close, and reset manually, resulting in a high risk of personnel falling and low efficiency.
A novel smoke exhaust valve switch locking device was designed, including a latch plate, a lock body, a remote reset device, and a valve closing relay. The valve can be remotely controlled and manually operated through a remote button and a hand crank. The valve opening and closing process is simplified by utilizing the combination of electromagnetic force and spring.
It reduces operational difficulty and safety risks, improves valve operation efficiency, allows a single person to complete valve tests, avoids working at heights, and enhances testing efficiency.
Smart Images
Figure CN121539664A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application belongs to the technical field of equipment maintenance, and particularly relates to a novel smoke valve opening and closing device for manual opening and closing operation of a high-position smoke valve in a nuclear power plant. BACKGROUND
[0002] There is a smoke valve of a fire smoke exhaust system in an M310 nuclear power unit, which is generally installed at the inlet of a smoke exhaust duct in a plant. The smoke valve has an electromagnetic device for keeping the valve closed, and the smoke valve is kept in a closed state normally. When a fire occurs in the plant or a smoke valve test is performed, a fire signal is triggered to cut off the electromagnetic device, and the smoke valve is opened by gravity. Since the smoke valve is a valve for discharging smoke during a fire, the valve is generally installed at a high position in the plant. The smoke valve can be remotely opened by an electromagnetic signal, which is relatively simple. However, when the smoke valve is manually opened or manually closed and reset after being opened, the operation is difficult, and the worker needs to carry a ladder to work at a high position, which has a high risk of falling. In the M310 unit, the smoke valve test of the fire smoke exhaust system is performed during each refueling period. The number of smoke valves is large, and the smoke valves are distributed in each room of the plant. Therefore, it is time-consuming and labor-consuming to carry a ladder during the entire test process, and the efficiency is low. Therefore, a novel smoke valve opening and closing device needs to be developed to facilitate the manual opening or closing and resetting operation of the smoke valve by the worker. SUMMARY
[0003] The present application aims to provide a novel smoke valve opening and closing device to improve the valve operation efficiency and reduce the safety risk of worker operation.
[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present application is as follows:
[0005] A novel smoke valve opening and closing device: comprising a lock plate, a lock body, and a remote reset device, the lock plate is installed at the edge of a movable baffle of a smoke valve, the lock body is installed on the frame of a valve body of the smoke valve, the lock body is internally provided with a lock tongue, a valve closing relay, a valve opening spring, and a remote valve opening button, the middle part of the lock tongue is connected with the valve closing relay, the tail part of the lock tongue is connected with the valve opening spring, the valve closing relay comprises an electromagnetic coil and an armature, the electromagnetic coil is fixed on the lock body, and the armature is installed at the middle part of the lock tongue; one end of the valve opening spring is connected with the tail part of the lock tongue, and the other end of the valve opening spring is connected with the lock body; the remote valve opening button is installed on the power supply circuit of the valve closing relay, and the remote reset device comprises a steel wire rope, a hand shaker, and a corner turner, one end of the steel wire rope is connected with the lower edge of the movable baffle of the smoke valve, and the other end of the steel wire rope is connected with the hand shaker through the corner turner.
[0006] The valve opening spring is installed at the end of the lock body away from the lock plate.
[0007] The remote valve opening button and the hand shaker are installed below the smoke valve to facilitate the operation position.
[0008] The corner turner is a fixed pulley, which is installed on the bottom frame of the smoke exhaust valve body, changes the direction of the steel wire rope by 90 degrees, and converts the vertical pulling force from the hand shaker into horizontal pulling force.
[0009] In normal state, the end of the lock tongue protrudes from the lock body, is clamped in the lock plate, and makes the smoke exhaust valve remain in the closed state. The remote open valve button is placed in the protruding position, and the close valve relay power supply circuit is in the closed power supply state. The close valve relay electromagnetic coil is powered to generate electromagnetic force, which attracts the armature in the middle of the lock tongue. The lock tongue overcomes the elastic force of the open valve spring and extends out of the lock body, and is clamped in the lock plate, so that the smoke exhaust valve remains in the closed position.
[0010] When the smoke exhaust valve body needs to be opened, the remote open valve button is pressed, the power supply circuit of the close valve relay is cut off, the electromagnetic force of the electromagnetic coil disappears, the lock tongue is pulled back into the lock body under the elastic force of the stretched open valve spring, and the movable baffle of the smoke exhaust valve falls under the action of gravity, so that the smoke exhaust valve is opened.
[0011] When the opened smoke exhaust valve needs to be closed, the remote open valve button is pressed to retract the lock tongue into the lock body, and the movable baffle of the smoke exhaust valve is pulled back to the closed position through the remote reset device. After the movable baffle of the smoke exhaust valve is closed, the remote open valve button is released, the lock tongue is extended out of the lock body under the action of the close valve relay, and is clamped in the lock plate, so that the smoke exhaust valve remains in the closed position.
[0012] The hand shaker comprises a hand shaker shell and a detachable handle.
[0013] In normal state, the handle of the hand shaker is removed, and when the smoke exhaust valve needs to be closed, the handle is inserted into the hand shaker shell, and the steel wire rope is wound by manually rotating the handle to pull back the movable baffle of the smoke exhaust valve to the closed position.
[0014] The hand shaker shell is provided with a gear set, which can amplify the rotating force of the hand shaker, so that small force can be used to pull the movable baffle of the smoke exhaust valve.
[0015] The present application has the following beneficial effects:
[0016] The present application reduces the difficulty of valve operation. When the smoke exhaust valve body needs to be opened, the smoke exhaust valve can be opened by only pressing the remote open valve button. When the smoke exhaust valve body needs to be closed, the lock tongue is retracted by pressing the remote open valve button, and the movable baffle of the smoke exhaust valve is pulled back to the closed position by using the remote reset device, and then the valve button is released. The present application does not need to be operated from a high position, but only needs to be operated through the remote device, which reduces the industrial safety risk of the operator when operating the valve. When the smoke exhaust valve is tested, only one person is needed to complete the opening and closing operation of the smoke exhaust valve, and no tools such as ladder are needed, which greatly improves the efficiency of the smoke exhaust valve test. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 This is a schematic diagram of a novel smoke exhaust valve switch locking device;
[0018] In the diagram: 1. Lock plate; 2. Lock body; 3. Lock tongue; 4. Valve closing relay; 5. Valve opening spring; 6. Remote valve opening button; 7. Steel wire rope; 8. Angle switch; 9. Hand crank; 10. Hand crank; 11. Smoke exhaust valve movable baffle; 12. Smoke exhaust valve body frame. Detailed Implementation
[0019] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.
[0020] like Figure 1The new smoke exhaust valve switch locking device is shown, which comprises a lock body 2, a lock plate 1 and a remote reset device. The lock plate 1 is installed on the edge of the movable baffle 11 of the smoke exhaust valve and is used to block the lock tongue 3 to keep the valve in the closed state. The lock body 2 is installed on the frame 12 of the smoke exhaust valve body, and the lock body 2 is internally provided with the lock tongue 3, a valve closing relay 4, an opening valve spring 5 and a remote opening valve button 6. The lock tongue 3 is installed in the lock body 2, the middle part of the lock tongue 3 is connected with the valve closing relay 4, and the tail part of the lock tongue 3 is connected with the opening valve spring 5. In the normal state, the end part of the lock tongue 3 protrudes from the lock body 2 and is clamped in the lock plate 1, so that the smoke exhaust valve is kept in the closed state; when the valve is opened, the lock tongue 3 is retracted into the lock body 2, so that the smoke exhaust valve is opened by gravity. When the valve is closed, the lock tongue 3 is retracted into the lock body 2 through the remote opening valve button 6, and after the movable baffle 11 of the smoke exhaust valve is closed in place, the remote opening valve button 6 is released, the lock tongue 3 is popped and clamped in the lock plate 1, so that the movable baffle 11 of the smoke exhaust valve can be kept in the closed position. The valve closing relay 4 comprises an electromagnetic coil and an armature, the electromagnetic coil is fixed on the lock body 2, and the armature is installed in the middle part of the lock tongue 3; when the valve is closed, the electromagnetic coil is electrified to generate electromagnetic force, which attracts the armature in the middle part of the lock tongue 3, the lock tongue 3 is extended from the lock body 2 under the action of the magnetic force and is clamped in the lock plate 1, so that the smoke exhaust valve is kept in the closed position. One end of the opening valve spring 5 is connected with the tail part of the lock tongue 3, and the other end is connected with the lock body 2; when the valve is closed, the opening valve spring 5 is in the stretched state under the action of the electromagnetic force of the valve closing relay 4; when the valve is opened, the electromagnetic force disappears, the lock tongue 3 is pulled back into the lock body 2 through the elastic force of the opening valve spring 5, so that the smoke exhaust valve can be automatically opened by gravity. The opening valve spring 5 is installed in the lock body 2 away from the lock plate 1. The remote opening valve button 6 is installed on the power supply circuit of the valve closing relay 4, and the remote opening valve button 6 is in the protruding state in the normal condition, so that the power supply circuit is kept closed; when the remote opening valve button 6 is pressed, the power supply circuit will be disconnected, the electromagnetic force of the valve closing relay 4 is lost, the lock tongue 3 is retracted into the lock body 2 under the action of the opening valve spring 5, so that the smoke exhaust valve is opened under the action of gravity. The remote opening valve button 6 is installed below the smoke exhaust valve for convenient operation. The remote reset device comprises a steel wire rope 7, a hand shaker 9 and a corner device 8. One end of the steel wire rope 7 is connected with the lower edge of the movable baffle 11 of the smoke exhaust valve, and the other end is connected with the hand shaker 9 through the corner device 8, which is used to pull the movable baffle 11 of the smoke exhaust valve; when the smoke exhaust valve needs to be closed and reset, the lock tongue 3 is retracted into the lock body 2 by pressing the remote opening valve button 6, and the movable baffle 11 of the smoke exhaust valve is pulled back to the closed position through the hand shaker 9. The hand shaker 9 comprises a hand shaker shell and a detachable handle 10, and the hand shaker 9 is installed below the smoke exhaust valve for convenient operation. In the normal state, the handle 10 of the hand shaker 9 is removed, and when the smoke exhaust valve needs to be closed and reset, the handle 10 is inserted into the hand shaker shell, the steel wire rope 7 is wound by manually shaking the handle 10, and the movable baffle 11 of the smoke exhaust valve is pulled back to the closed position; the hand shaker 9 shell is internally provided with a gear set, which can amplify the rotary force of manual shaking, so that a very small force can be used to pull the movable baffle 11 of the smoke exhaust valve.The corner turner 8 is a fixed pulley, which is installed on the bottom frame of the smoke exhaust valve body, and changes the direction of the wire rope 7 by 90°, so as to convert the vertical pulling force from the hand shaker 9 into horizontal pulling force.
[0021] Normally, the smoke exhaust valve is in the closed state, the remote opening valve button 6 is in the protruding position, the closing valve relay 4 power supply circuit is in the closed power-on state, the closing valve relay 4 electromagnetic coil is powered on to generate electromagnetic force, under the action of the electromagnetic force, the lock tongue 3 extends out of the lock body 2 against the elastic force of the opening valve spring 5, and is clamped by the lock catch plate 1, so that the valve is kept in the closed position.
[0022] When it is necessary to open the valve of the smoke exhaust valve body, the remote opening valve button 6 is pressed down, the power supply circuit of the closing valve relay 4 is cut off, the electromagnetic force of the closing valve relay 4 electromagnetic coil disappears, the lock tongue 3 is pulled back into the lock body 2 under the elastic force of the opening valve spring 5, and the movable baffle 11 of the smoke exhaust valve falls under the action of gravity, so that the smoke exhaust valve is opened.
[0023] When it is necessary to close the opened smoke exhaust valve, the remote opening valve button 6 is pressed down to make the lock tongue 3 retract into the lock body 2, and at the same time, the movable baffle 11 of the smoke exhaust valve is pulled back to the closed position through the remote reset device, after the movable baffle 11 of the smoke exhaust valve is closed in place, the remote opening valve button 6 is released, the lock tongue 3 will extend out of the lock body 2 under the action of the closing valve relay 4 and be clamped in the lock catch plate 1, so that the smoke exhaust valve is kept in the closed position.
Claims
1. A novel smoke exhaust valve switch locking device, characterized in that: The device includes a strike plate, a lock body, and a remote reset device. The strike plate is installed on the edge of the movable baffle of the smoke exhaust valve, and the lock body is installed on the valve body frame of the smoke exhaust valve. Inside the lock body, there is a latch, a valve closing relay, a valve opening spring, and a remote valve opening button. The middle of the latch is connected to the valve closing relay, and the tail of the latch is connected to the valve opening spring. The valve closing relay includes an electromagnetic coil and an armature. The electromagnetic coil is fixed on the lock body, and the armature is installed in the middle of the latch. One end of the valve opening spring is connected to the tail of the latch, and the other end is connected to the lock body. The remote valve opening button is installed on the power supply circuit of the valve closing relay. The remote reset device includes a wire rope, a hand crank, and a corner bracket. One end of the wire rope is connected to the lower edge of the movable baffle of the smoke exhaust valve, and the other end is connected to the hand crank through the corner bracket.
2. The novel smoke exhaust valve switch locking device according to claim 1, characterized in that: The valve opening spring is installed inside the lock body at the end away from the strike plate.
3. The novel smoke exhaust valve switch locking device according to claim 1, characterized in that: The remote valve opening button and hand crank are installed in an easily accessible position below the smoke exhaust valve.
4. The novel smoke exhaust valve switch locking device according to claim 1, characterized in that: The angle lever is a fixed pulley installed on the bottom frame of the exhaust valve body. By changing the direction of the wire rope by 90°, it converts the vertical tension from the hand crank into a horizontal tension.
5. The novel smoke exhaust valve switch locking device according to claim 1, characterized in that: Under normal conditions, the end of the latch protrudes from the lock body and is locked inside the strike plate, keeping the smoke exhaust valve in the closed position. The remote valve opening button is in the protruding position, the power supply circuit of the valve closing relay is in the closed energized state, the electromagnetic coil of the valve closing relay is energized to generate electromagnetic force, attracting the armature in the middle of the latch. The latch overcomes the elastic force of the valve opening spring and extends out of the lock body, and is locked by the strike plate, keeping the smoke exhaust valve in the closed position.
6. The novel smoke exhaust valve switch locking device according to claim 1, characterized in that: When the exhaust valve body needs to be opened, press the remote valve opening button. The power supply circuit of the valve closing relay is cut off, the electromagnetic force of the electromagnetic coil disappears, and the locking tongue is pulled back into the lock body under the elastic force of the stretched valve opening spring. The movable baffle of the exhaust valve falls under the action of gravity, so that the exhaust valve opens.
7. The novel smoke exhaust valve switch locking device according to claim 1, characterized in that: When it is necessary to close and reset the open smoke exhaust valve, press the remote valve opening button to retract the latch into the lock body. At the same time, the remote reset device pulls the movable baffle of the smoke exhaust valve back to the closed position. After the movable baffle of the smoke exhaust valve is closed, release the remote valve opening button. The latch extends out of the lock body again under the action of the valve closing relay and locks in the lock plate, keeping the smoke exhaust valve in the closed position.
8. The novel smoke exhaust valve switch locking device according to claim 1, characterized in that: The hand crank consists of a hand crank housing and a detachable crank handle.
9. The novel smoke exhaust valve switch locking device according to claim 8, characterized in that: Under normal conditions, the handle of the hand crank is removed. When the smoke exhaust valve needs to be closed and reset, the handle is inserted into the hand crank housing, and the handle is manually cranked to wind up the wire rope and pull the movable baffle of the smoke exhaust valve back to the closed position.
10. The novel smoke exhaust valve switch locking device according to claim 8, characterized in that: The hand crank housing contains a gear set that amplifies the rotational force of the hand crank, allowing the smoke exhaust valve's movable baffle to be pulled with minimal force.