Electric control system of pneumatic louver of ship

Abstract

The invention relates to the technical field of ships, and discloses an electric control system of a ship pneumatic shutter, the electric control system comprises a gas circuit unit and a control unit, the gas circuit unit comprises a gas source, a gas pipeline, an on-off valve, a reversing valve and a pneumatic actuating mechanism, the on-off valve and the reversing valve are both connected to the gas pipeline, the on-off valve is located at one end close to the gas source, and the pneumatic actuating mechanism is located at the other end close to the gas pipeline. The reversing valve is positioned at one end close to the pneumatic actuating mechanism; the control unit comprises a power source, a reversing switch and a connecting circuit, the on-off valve and the reversing valve are electrically connected with the power source through the connecting circuit, and the reversing switch is connected to the connecting circuit and used for controlling on-off of the connecting circuit. The reversing valve is arranged at the end, close to the pneumatic executing mechanism, of the gas pipeline, the length of the gas pipeline needing to be discharged is far smaller than the total length of the gas pipeline, the efficiency of pneumatic failure closing is improved, gas in the gas pipeline between the reversing valve and the on-off valve cannot be discharged, the gas in the gas pipeline does not need to be completely emptied, and the cost is reduced. And the gas consumption is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of ships, and in particular to an electric control system for a ship's pneumatic shutter. Background Art

[0002] Pneumatic shutters are commonly used cabin ventilation mechanisms in ships. An air source is provided to connect the cylinder of the shutters. The air source supplies air to the cylinder to drive the shutters to open or close. Existing ship pneumatic shutters are closed by air loss.

[0003] For Class A machinery spaces with a greater risk of fire in ships, choosing a more reliable pneumatic fail-safe closing device to cut off the external gas passage after the space is on fire is the main choice of today's shipowners. Pure pneumatic fail-safe closing devices need to be connected to the air pipe to the air source. On ships, the air source is generally compressed by an air compressor and then stored in a gas cylinder. Usually, the air compressor is placed in the airport, and the gas cylinder is placed in the fire control station as the air supply source for the pneumatic shutters. When the pneumatic shutters are closed, the cylinder of the shutters loses air after the air source is cut off and discharged.

[0004] Since the gas cylinders are arranged in the fire control station, the pneumatic failure closing device needs to connect a section of gas pipe to the gas cylinder. After the gas source is cut off, the gas in the gas pipe cannot be quickly discharged from the exhaust pipe set on the gas source due to the limitation of the gas pipe length, resulting in the closing device needing to wait for a period of time. This time varies according to the length of the gas pipe. The longer the gas pipe, the longer the time. For small feeder container ships, the gas pipe is about 30-40 meters, and the waiting time is about 2 minutes, resulting in a slow closing response of the shutters. Summary of the invention

[0005] The purpose of the present invention is to provide an electric control system for a ship pneumatic shutter to solve the problem in the prior art that the pneumatic shutter responds slowly when closing due to pneumatic failure.

[0006] In order to achieve the above object, the present invention provides an electric control system for a ship pneumatic shutter, comprising an air circuit unit and a control unit.

[0007] The gas circuit unit comprises a gas source, a gas pipeline, an on-off valve, a reversing valve and a pneumatic actuator, the gas pipeline is connected between the gas source and the pneumatic actuator, the on-off valve and the reversing valve are both connected to the gas pipeline, the on-off valve is located at one end of the gas pipeline close to the gas source, the reversing valve is located at one end of the gas pipeline close to the pneumatic actuator, the on-off valve has a connected state connected to the gas pipeline and a disconnected state disconnected from the gas pipeline, and the reversing valve has a gas supply state connected to the gas source and the pneumatic actuator and an exhaust state connected to the outside and the pneumatic actuator during the action stroke;

[0008] The control unit includes a power supply, a reversing switch and a connecting circuit. The on-off valve and the reversing valve are electrically connected to the power supply through the connecting circuit. The reversing switch is connected to the connecting circuit. The reversing switch is used to control the on and off of the connecting circuit. When the connecting circuit is powered on, the on-off valve is in a connected state and the reversing valve is in an air supply state. When the connecting circuit is disconnected, the on-off valve is in a disconnected state and the reversing valve is in an exhaust state.

[0009] Preferably, the reversing switch comprises a first switch and a second switch, the first switch, the second switch and the connecting circuit constitute a dual-control circuit, the first switch is located at the air source, and the second switch is located at the pneumatic actuator.

[0010] Preferably, the control unit further comprises a fuse, the fuse is connected to the connection circuit, and the fuse is arranged in an engine room area of ​​the ship.

[0011] Preferably, the control unit also includes a temperature detector and an alarm, wherein the temperature detector is arranged in the engine room area of ​​the ship, the temperature detector is signal-connected to the alarm, and the temperature detector is used to detect the temperature of the engine room area and transmit an alarm signal to the alarm.

[0012] Preferably, the control unit also includes a pressure detector, which is fixedly connected to the gas pipeline, and the pressure detector is signal-connected to the on-off valve and the reversing valve. The pressure detector is used to detect the pressure of the gas pipeline and transmit an on-off signal to the on-off valve and the reversing valve.

[0013] Preferably, the on-off valve and the reversing valve are both solenoid valves.

[0014] Compared with the prior art, the electric control system of a ship pneumatic shutter in an embodiment of the present invention has the following beneficial effects: when it is necessary to cut off the gas supply of the pneumatic actuator so that the pneumatic actuator fails to close the pneumatic shutter, the operator can operate the reversing switch of the control unit, the reversing switch disconnects the connection circuit, the on-off valve switches from the connected state to the disconnected state after the power is cut off, and the reversing valve switches from the gas supply state to the exhaust state after the power is cut off, so that the gas in the gas pipeline between the reversing valve and the pneumatic actuator can be directly discharged, so that the pneumatic actuator fails to close the pneumatic shutter; because the reversing valve is arranged in The gas pipeline is close to one end of the pneumatic actuator, and the length of the gas pipeline that needs to be discharged is much smaller than the total length of the gas pipeline, which speeds up the efficiency of pneumatic failure shutdown; the on-off valve can disconnect the gas supply of the gas pipeline, and the gas in the gas pipeline between the reversing valve and the on-off valve will not be discharged. There is no need to completely empty the gas in the gas pipeline, and there is no need to refill the gas pipeline with gas when restarting. The response can be obtained quickly when restarting, reducing gas consumption. At the same time, the gas cylinder capacity can no longer calculate the volume of compressed air consumed and discharged in the gas pipe, thereby further reducing the volume of the air cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the electric control system of the ship pneumatic shutter of the present invention.

[0016] In the figure, 1. gas source, 2. gas pipeline, 3. on-off valve, 4. reversing valve, 5. pneumatic actuator, 6. power supply, 7. reversing switch, 71. first switch, 72. second switch, 8. connecting circuit, 9. fuse, 10. temperature detector, 11. alarm, 12. pressure detector, 13. fire control station, 14. cabin area. DETAILED DESCRIPTION

[0017] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0018] A preferred embodiment of the electric control system of a ship pneumatic shutter of the present invention is as follows Figure 1 As shown, the electric control system of the ship's pneumatic shutters includes an air circuit unit and a control unit. The air circuit unit is used to drive the pneumatic shutters to open or close, and the control unit is used to adjust the on / off state of the air circuit unit.

[0019] The gas circuit unit includes a gas source 1, a gas pipeline 2, an on-off valve 3, a reversing valve 4 and a pneumatic actuator 5. The gas pipeline 2 is connected between the gas source 1 and the pneumatic actuator 5. The gas source 1 is used to supply compressed gas to the pneumatic actuator 5 through the gas pipeline 2. The pneumatic actuator 5 is used to be connected to the pneumatic shutter in a transmission manner to drive the pneumatic shutter to open or close. In this embodiment, the pneumatic actuator 5 can be a cylinder of the pneumatic shutter. The gas source 1 is arranged at the fire control station 13 of the ship, and the gas source 1 is a gas cylinder filled with compressed air.

[0020] The on-off valve 3 and the reversing valve 4 are both connected to the gas pipeline 2. The on-off valve 3 is arranged at one end of the gas pipeline 2 close to the gas source 1, and the reversing valve 4 is arranged at one end of the gas pipeline 2 close to the pneumatic actuator 5. The on-off valve 3 is used to adjust the on-off state of the gas pipeline 2, and the reversing valve 4 is used to change the connection state between the start actuator and the gas pipeline 2. The on-off valve 3 is arranged at the gas source 1 to prevent the gas in the gas source 1 from escaping on the way when the gas pipeline 2 is damaged in an accident. At the same time, when the circuit is powered off, the gas source 1 also moves to cut off the gas supply, thereby bypassing the phenomenon that the gas needs to be discharged from the fire control station 13 before it can be completely cut off. The reversing valve 4 is arranged at the pneumatic actuator 5 to reduce the length of the gas pipeline 2 that needs to be exhausted during exhaust.

[0021] The on-off valve 3 has a connected state and a disconnected state. When the on-off valve 3 is in the connected state, the gas in the gas source 1 can be supplied to the gas pipeline 2; when the on-off valve 3 is in the disconnected state, the gas in the gas source 1 is disconnected from flowing to the gas pipeline 2. The reversing valve 4 has a gas supply state and an exhaust state. When the reversing valve 4 is in the gas supply state, the gas source 1 is connected to the pneumatic actuator 5 through the gas pipeline 2. At this time, the pneumatic actuator 5 supplies gas and the shutter is opened; when the reversing valve 4 is in the exhaust state, the pneumatic actuator 5 is connected to the outside through the gas pipeline 2, and the gas in the gas pipeline 2 between the pneumatic actuator 5 and the reversing valve 4 can be discharged to the outside. At this time, the pneumatic actuator 5 fails and the shutter is closed.

[0022] The control unit includes a power supply 6, a reversing switch 7 and a connecting circuit 8. The on-off valve 3 and the reversing valve 4 are electrically connected to the power supply 6 through the connecting circuit 8, and the reversing switch 7 is mounted on the connecting circuit 8. The reversing switch 7 is used to adjust the on-off of the connecting circuit 8, and thereby adjust the state of the on-off valve 3 and the reversing valve 4, thereby changing the state of the gas pipeline 2. In this embodiment, the power supply 6 is arranged in the fire control station 13, and is arranged at a position close to the gas source 1.

[0023] When the reversing switch 7 is closed, the connecting circuit 8 is energized, at which time the on-off valve 3 is in the connected state and the reversing valve 4 is in the air supply state; when the reversing switch 7 is disconnected, the connecting circuit 8 is disconnected, at which time the on-off valve 3 is in the disconnected state and the reversing valve 4 is in the exhaust state.

[0024] When the electric control system of the ship's pneumatic shutter needs to cut off the gas supply to the pneumatic actuator 5 so that the pneumatic actuator 5 fails to close the pneumatic shutter, the operator can operate the reversing switch 7 of the control unit, and the reversing switch 7 disconnects the connection circuit 8. After the on-off valve 3 is powered off, it switches from the connected state to the disconnected state, and after the reversing valve 4 is powered off, it switches from the gas supply state to the exhaust state, so that the gas in the gas pipeline 2 between the reversing valve 4 and the pneumatic actuator 5 can be directly discharged, so that the pneumatic actuator 5 fails to close the pneumatic shutter; because the reversing valve 4 is arranged in the gas pipeline 2 close to the pneumatic actuator At one end of the mechanism 5, the length of the gas pipeline 2 that needs to be discharged is much smaller than the total length of the gas pipeline 2, which speeds up the efficiency of pneumatic failure closure; the on-off valve 3 can disconnect the gas source 1 supply of the gas pipeline 2, and the gas in the gas pipeline 2 between the reversing valve 4 and the on-off valve 3 will not be discharged. There is no need to completely empty the gas in the gas pipeline 2, and there is no need to refill the gas pipeline 2 with gas when restarting. The response can be obtained quickly when restarting, reducing gas consumption. At the same time, the capacity of the gas cylinder can no longer calculate the volume of compressed air consumed and discharged in the air pipe, thereby further reducing the volume of the air cylinder.

[0025] Preferably, the reversing switch 7 includes a first switch 71 and a second switch 72 . The first switch 71 , the second switch 72 and the connecting circuit 8 form a dual-control circuit. The first switch 71 is located at the air source 1 , and the second switch 72 is located at the pneumatic actuator 5 .

[0026] The first switch 71, the second switch 72 and the connecting circuit 8 form a dual control circuit, and the first switch 71 and the second switch 72 can respectively adjust the on-off of the connecting circuit 8, which is convenient for operation. Since the first switch 71 is located at the gas source 1 and the second switch 72 is located at the pneumatic actuator 5, the operator can operate at the gas source 1 and the pneumatic actuator 5, that is, at the fire control station 13 or at the local position of the pneumatic shutter, to achieve the on-off change of the connecting circuit 8.

[0027] In case of fire, the operator can cut off the power supply 6 through the first switch 71 at the fire control station 13, so that the reversing valve 4 at the pneumatic shutter and the on-off valve 3 at the gas source 1 both lose the power supply 6, and the cutting function can be realized in a very short time, realizing the rapid response function of the pneumatic shutter. When a fault occurs and needs to be repaired, the operator can cut off the power supply 6 through the second switch 72 at the pneumatic shutter to realize the function of cutting off the gas source 1, so as to facilitate maintenance and repair.

[0028] Preferably, the control unit further comprises a fuse 9, which is connected to the connecting circuit 8 and is arranged in the engine room area 14 of the vessel.

[0029] A fuse 9 is provided on the connection circuit 8, and the engine room area 14 is a temperature monitoring area. When the engine room is on fire, the fuse 9 burns out due to the high temperature, cutting off the connection circuit 8, the reversing valve 4 and the on-off valve 3 are both powered off, and the pneumatic shutters are closed to prevent the fire from spreading.

[0030] Preferably, the control unit also includes a temperature detector 10 and an alarm 11. The temperature detector 10 is arranged in the engine room area 14 of the ship. The temperature detector 10 is signal-connected to the alarm 11. The temperature detector 10 is used to detect the temperature of the engine room area 14 and transmit an alarm signal to the alarm 11.

[0031] The temperature detector 10 is arranged in the cabin area 14. When the temperature detector 10 detects that the temperature in the cabin is too high, it transmits an alarm signal to the alarm 11. The alarm 11 alarms to remind the operator to cut off the connection circuit 8 and close the pneumatic shutters in time.

[0032] Preferably, the control unit also includes a pressure detector 12, which is fixedly connected to the gas pipeline 2. The pressure detector 12 is signal-connected to the on-off valve 3 and the reversing valve 4. The pressure detector 12 is used to detect the pressure of the gas pipeline 2 and transmit an on-off signal to the on-off valve 3 and the reversing valve 4.

[0033] The pressure detector 12 is arranged on the gas pipeline 2. When the gas pipeline 2 is damaged, its internal pressure will drop suddenly. When the pressure detector 12 detects a sudden change in the pressure of the gas pipeline 2, it can control the on-off valve 3 and the reversing valve 4 to cut off the gas pipeline 2 and prevent the gas source 1 from continuously supplying gas.

[0034] Preferably, the on-off valve 3 and the reversing valve 4 are both solenoid valves.

[0035] The solenoid valve has the characteristics of fast response and high efficiency. It can quickly cut off the state when the power is off, and the pneumatic closing device can complete the closing action within 5 seconds.

[0036] In summary, the embodiment of the present invention provides an electric control system for a ship's pneumatic shutters, and when it is necessary to cut off the gas supply to the pneumatic actuator to make the pneumatic actuator fail to close the pneumatic shutters, the operator can operate the reversing switch of the control unit, the reversing switch disconnects the connection circuit, the on-off valve switches from the connected state to the disconnected state after the power is cut off, and the reversing valve switches from the gas supply state to the exhaust state after the power is cut off, so that the gas in the gas pipeline between the reversing valve and the pneumatic actuator can be directly discharged, so that the pneumatic actuator fails to close the pneumatic shutters; because the reversing valve is arranged in the gas pipeline At one end close to the pneumatic actuator, the length of the gas pipeline that needs to be discharged is much smaller than the total length of the gas pipeline, which speeds up the efficiency of pneumatic failure shutdown; the on-off valve can disconnect the gas supply of the gas pipeline, and the gas in the gas pipeline between the reversing valve and the on-off valve will not be discharged. There is no need to completely empty the gas in the gas pipeline, and there is no need to refill the gas pipeline with gas when restarting. The response can be obtained quickly when restarting, reducing gas consumption. At the same time, the gas cylinder capacity can no longer calculate the volume of compressed air consumed and discharged in the gas pipe, thereby further reducing the volume of the air cylinder.

[0037] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. An electric control system for a ship's pneumatic shutter, characterized in that: Including gas circuit unit and control unit, The gas circuit unit comprises a gas source, a gas pipeline, an on-off valve, a reversing valve and a pneumatic actuator, the gas pipeline is connected between the gas source and the pneumatic actuator, the on-off valve and the reversing valve are both connected to the gas pipeline, the on-off valve is located at one end of the gas pipeline close to the gas source, the reversing valve is located at one end of the gas pipeline close to the pneumatic actuator, the on-off valve has a connected state connected to the gas pipeline and a disconnected state disconnected from the gas pipeline, and the reversing valve has a gas supply state connected to the gas source and the pneumatic actuator and an exhaust state connected to the outside and the pneumatic actuator during the action stroke; The control unit includes a power supply, a reversing switch and a connecting circuit. The on-off valve and the reversing valve are electrically connected to the power supply through the connecting circuit. The reversing switch is connected to the connecting circuit. The reversing switch is used to control the on and off of the connecting circuit. When the connecting circuit is powered on, the on-off valve is in a connected state and the reversing valve is in an air supply state. When the connecting circuit is disconnected, the on-off valve is in a disconnected state and the reversing valve is in an exhaust state.

2. The electric control system of the ship pneumatic shutter according to claim 1, characterized in that: The reversing switch includes a first switch and a second switch. The first switch, the second switch and the connecting circuit form a dual-control circuit. The first switch is located at the air source, and the second switch is located at the pneumatic actuator.

3. The electric control system of the ship pneumatic shutter according to claim 2 is characterized in that: The control unit further comprises a fuse, which is connected to the connection circuit and is arranged in an engine room area of ​​the vessel.

4. The electric control system of the ship pneumatic shutter according to any one of claims 1 to 3, characterized in that: The control unit also includes a temperature detector and an alarm. The temperature detector is arranged in the engine room area of ​​the ship. The temperature detector is connected to the alarm signal. The temperature detector is used to detect the temperature of the engine room area and transmit an alarm signal to the alarm.

5. The electric control system of the ship pneumatic shutter according to any one of claims 1 to 3, characterized in that: The control unit also includes a pressure detector, which is fixedly connected to the gas pipeline. The pressure detector is signal-connected to the on-off valve and the reversing valve. The pressure detector is used to detect the pressure of the gas pipeline and transmit an on-off signal to the on-off valve and the reversing valve.

6. The electric control system of the ship pneumatic shutter according to any one of claims 1 to 3, characterized in that: The on-off valve and the reversing valve are both solenoid valves.

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