阅读说明：本技术 一种多级保压消防装置及控制方法 (Multistage pressure maintaining fire fighting device and control method ) 是由 张家茂 孙瑞 颜小明 江练金 余齐威 何大涛 于 2021-06-21 设计创作，主要内容包括：本发明公开了一种多级保压消防装置及控制方法,属于特种船舶上消防灭火系统技术领域,包括配置有主消防泵一的泵组一、配置有主消防泵二的泵组二以及配置有主消防泵三的泵组三,所述主消防泵一和主消防泵三均为低压力泵,所述主消防泵二为高压力泵,所述主消防泵一、主消防泵二和主消防泵三进行三者并联。通过配置保压罐和小流量保压泵在消防主管上压力小幅波动时给管路系统保压,配置压力开关、压力传感器对管路压力进行实时监测和对泵进行精确控制启停,只有在需要大流量灭火时,检测到管路压力降低到设定值,才依次启动其他大流量主泵,避免频繁启动主泵,节约能源,延长主泵使用寿命,通过IAS实现了多级保压自动控制和远程控制。(The invention discloses a multistage pressure maintaining fire fighting device and a control method, and belongs to the technical field of fire extinguishing systems for special ships. Through configuration pressurize jar and little flow pressurize pump for the piping system pressurize when the pressure is undulant a little on the fire control person in charge, configuration pressure switch, pressure sensor carries out real-time supervision and opens and stop with carrying out accurate control to the pump to pipeline pressure, only when needing large-traffic putting out a fire, it reduces the setting value to detect pipeline pressure, just start other large-traffic main pumps in proper order, avoid frequently starting the main pump, the energy saving, extension main pump life, multi-stage pressurize automatic control and remote control have been realized through IAS.)

1. A multistage pressure maintaining fire fighting device is provided with three pump groups, and is characterized by comprising a first pump group provided with a first main fire pump (101), a second pump group provided with a second main fire pump (102), and a third pump group provided with a third main fire pump (103), wherein the first main fire pump (101) and the third main fire pump (103) are both low-pressure pumps, the second main fire pump (102) is a high-pressure pump, and the first main fire pump (101), the second main fire pump (102) and the third main fire pump (103) are connected in parallel;

dispose main fire pump one (101), pressurize pump one (201), pressurize jar one (301), pressure switch three (15), pressure switch four (16), port board sea chest door (M1), pressure sensor two (6), check valve three (V3), check valve four (V4), remote control valve two (V9), signal control line (E1), motor control dish (MCC), fire control pipe one (G1) in the pump package one, wherein, it all fixed mounting is on the by-pass pipeline of main fire pump one (101) to keep warm pump one (201) and pressurize jar one (301), main fire pump one (101) absorb the water source through port board sea chest door (M1), main fire pump one (101) are through fire control pipe one (G1) through remote control valve two (V9) control delivery fire water to main fire control looped netowrk (W1) put out a fire, pressure switch four (16), motor control dish (MCC) and pressurize pump one (201) are parallelly connected to control through signal S (1) and are connected to integrated control system (368624) through comprehensive control of signal S (1) and put out a fire ) The pressure switch III (15) and the main fire pump I (101) are controlled in parallel and connected to an Integrated Automation System (IAS) through a signal control line (E1), the pressure sensor II (6) and a remote control valve II (V9) are connected into the Integrated Automation System (IAS) for control, and the check valve III (V3) and the check valve IV (V4) are fixedly installed on a main pipeline and a bypass pipeline of the main fire pump I (101) respectively and are used for preventing the main fire pump I (101) and the pressure maintaining pump I (201) from being connected with each other when in operation;

the second pump group is provided with a second main fire pump (102), a second pressure maintaining pump (202), a second pressure maintaining tank (302), a fifth pressure switch (17), a sixth pressure switch (18), a subsea door (M2), a third pressure sensor (12), a fifth pressure sensor (20), a first check valve (V1), a second check valve (V2), a third remote control valve (V10), a fourth remote control valve (V11), a fifth remote control valve (V12), a signal control line (E1), a motor control panel (MCC), a second fire fighting pipe (G2) and a fourth fire fighting pipe (G4), wherein the second pressure maintaining pump (202) and the second pressure maintaining tank (302) are fixedly arranged on a bypass pipeline of the second main fire pump (102), the second main fire pump (102) absorbs water through the subsea door (M2), the second main fire pump (102) controls and conveys water to a fire fighting ring network (W1) through the fifth remote control valve (V12) through the second fire fighting pipe (G2), the pressure sensor III (12), the motor control disc (MCC) and the pressure maintaining tank II (302) are controlled in parallel and connected to an Integrated Automation System (IAS) through a signal control line (E1), the pressure switch VI (18), the motor control disc (MCC) and the main fire pump II (102) are controlled in parallel and connected to the Integrated Automation System (IAS) through a signal control line (E1), the pressure sensor III (12) and the pressure sensor V (20) are connected to the Integrated Automation System (IAS) for control, and the check valve I (V1) and the check valve II (V2) are fixedly installed on a main pipeline and a bypass pipeline of the main fire pump II (102) respectively and used for preventing the main fire pump II (102) and the pressure maintaining pump II (202) from being connected with each other when in operation;

a main fire pump III (103), a pressure maintaining pump III (203), a pressure maintaining tank III (303), a pressure switch I (13), a pressure switch II (14) and a starboard sea bottom door (m) are arranged in the pump group III³) Pressure sensor one (4), check valve five (V5), check valve six (V6), remote control valve one (V8), signal control line (E1), motor control dish (MCC), fire control pipe three (G3), wherein, the equal fixed mounting of pressurize pump three (203) and pressurize jar three (303) is on the bypass pipeline of main fire pump three (103), main fire pump three (103) are through starboard seabed door (m) door (103)³) The main fire pump III (103) is controlled to convey fire-fighting water to a main hull fire-fighting ring network (W1) for fire extinguishing through a fire-fighting pipe III (G3) through a remote control valve I (V8), the pressure switch I (13), a motor control disc (MCC) and a pressure maintaining tank III (303) are connected in parallel through a signal control line (E1) to an Integrated Automation System (IAS), and the pressure switch II (14), the motor control disc (MCC) and the main fire pump III (103) are connected in parallel through signal controlThe line (E1) is connected into an Integrated Automation System (IAS), the pressure sensor I (4) and the remote control valve I (V8) are connected into the Integrated Automation System (IAS) for control, and the check valve V (V5) and the check valve VI (V6) are fixedly installed on a main pipeline and a bypass pipeline of the main fire pump III (103) respectively and are used for preventing the main fire pump III (103) and the pressure maintaining pump III (203) from being connected with each other in series when in operation.

2. The multistage pressure-maintaining fire-fighting device according to claim 1, characterized in that a throttle orifice (S1) is further provided on a pipeline between a remote control valve III (V10) and a remote control valve V (V12) in the pump group II, the throttle orifice (S1) is controlled by a manual valve (V7), and the manual valve (V7) is set to a normally closed state.

3. The multistage pressure-maintaining fire fighting device according to claim 1, wherein when the second main fire pump (102) in the second pump group absorbs water through the subsea door (M2), fire fighting water is supplied to the main hull fire fighting ring network (W1) through the orifice plate (S1) and the second fire fighting pipe (G2), or the water supply is controlled to the helicopter platform fire fighting device (W2) through the fourth fire fighting pipe (G4) via the fourth remote control valve (V11).

4. A multistage pressure-maintaining fire fighting unit as claimed in claim 3, characterized in that the heliplatform fire fighting unit (W2) is designed in the foam fire fighting type for extinguishing fires caused by fuel leakage in the area of the heliplatform, and the heliplatform fire fighting unit (W2) is equipped with a flow switch (S2), and when a fire occurs, the sprinkler head automatically emits fire extinguishing fluid, the flow switch (S2) is activated, a signal is transmitted to the Integrated Automation System (IAS), and the Integrated Automation System (IAS) restarts the corresponding components in the remote control valve four (V11) and the pump unit two.

5. The multistage pressure maintaining fire fighting device according to claim 1, wherein the main hull fire fighting looped network (W1) is configured with a pressure sensor four (19), the pressure sensor four (19) is in signal connection with an Integrated Automation System (IAS), and a fire hose one (G1), a fire hose two (G2) and a fire hose three (G3) supply fire fighting water to the main hull fire fighting looped network (W1) for fire hydrants at various points on the main hull fire fighting looped network (W1) and other fire fighting facilities.

6. The multistage pressure maintaining fire fighting device according to claim 1, wherein the first pressure maintaining tank (301), the second pressure maintaining tank (302) and the third pressure maintaining tank (303) are all of airbag type, when the water pressure in the fire fighting system slightly changes, the automatic expansion and contraction of the airbag of the pressure tank can have a certain buffering effect on the change of the water pressure, the water pressure of the system can be ensured to be stable, and the pressure maintaining pump and the main fire pump cannot be frequently opened due to the change of the pressure.

7. A control method of a multistage pressure-maintaining fire fighting device, which is characterized in that the operation control is performed based on the multistage pressure-maintaining fire fighting device of claims 1-6, and comprises the following three methods:

a control method for the first pressure maintaining pump (201), the second pressure maintaining pump (202) and the third pressure maintaining pump (203);

a control method for a main hull fire protection looped network (W1), a first main fire pump (101), a second main fire pump (102) and a third main fire pump (103);

a control method for a helicopter platform fire protection device (W2) and a main fire pump II (102).

8. The control method of the multistage pressure maintaining fire fighting device according to claim 7, characterized in that the control method of the first pressure maintaining pump (201), the second pressure maintaining pump (202) and the third pressure maintaining pump (203) comprises the following specific steps:

1) the normal working pressure of the main hull fire protection looped network (W1) is p4, the pressure sensor four (19) is used for displaying the looped network pressure of the main hull fire protection looped network (W1), the remote control valve one (V8) and the remote control valve two (V9) are normally open, the pump group auxiliary branch pipes of the main fire pump one (101) and the main fire pump three (103), the fire protection pipe one (G1) and the fire protection pipe three (G3) are communicated with the main hull fire protection looped network (W1), and the pressure indication of any pressure sensor and the pressure switch has the same effect;

2) setting the pressure at a pressure switch I (13) in a main hull fire-fighting looped network (W1) to be reduced to p2, sending a signal of the pressure switch I (13) to a motor control panel (MCC) to automatically start a pressure-maintaining pump III (203), and feeding back the running state to an Integrated Automation System (IAS), and if the pressure switch I (13) rises back to p4, automatically stopping the pressure-maintaining pump III (203);

3) the normal working pressure of the helicopter platform fire fighting device (W2) is p5, when the pressure switch five (17) is set to be reduced to the pressure p7, the pressure switch five (17) signals a motor control panel (MCC) to automatically start the second pressure retaining pump (202), and if the pressure of the pressure switch five (17) is increased back to p5, the second pressure retaining pump (202) is automatically stopped;

4) the pressure p5 > p4 > p1 > p 2.

9. The control method of the multistage pressure maintaining fire fighting device according to claim 7, characterized in that the control method of the main hull fire fighting looped network (W1), the first main fire pump (101), the second main fire pump (102) and the third main fire pump (103) comprises the following specific steps:

1) the normal working pressure of the main hull fire-fighting looped network (W1) is p4, when the pressure of a pressure switch III (15) is reduced to p11, a signal of the pressure switch III (15) is sent to a motor control panel (MCC) to automatically start a main fire pump I (101), the running state is fed back to an Integrated Automation System (IAS), and a pressure sensor II (6) indicates a pressure signal to the Integrated Automation System (IAS);

2) when the pressure of the pressure switch II (14) is reduced to p12, the pressure switch II (14) signals to the motor control panel (MCC) to automatically start the main fire pump III (103), the running state is fed back to the Integrated Automation System (IAS), and the pressure sensor I (4) indicates a pressure signal to the Integrated Automation System (IAS);

3) when the pressure of the fire-fighting looped network (W1) of the main hull is reduced to p13, the pressure sensor IV (19) sends an alarm signal to the Integrated Automation System (IAS), the Integrated Automation System (IAS) opens the remote control valve V (V12) through a signal control line E1, the pressure switch VI (18) is set to be lower than p15 at the moment, the main fire pump II (102) is automatically started, and the pressure sensor III (12) indicates that a pressure signal is sent to the Integrated Automation System (IAS);

4) manually stopping a first main fire pump (101), a second main fire pump (102) and a third main fire pump (103) from an Integrated Automation System (IAS);

5) the pressure p5 > p7 > p15 > p4 > p1 > p2 > p11 > p12 > p13 > 2.8 bar.

10. The control method of the multistage pressure maintaining fire fighting device according to claim 7, characterized in that the control method for the helicopter platform fire fighting device (W2) and the main fire pump II (102) comprises the following specific steps:

1) when a fire occurs, the flow switch (S2) is activated, a signal is transmitted to the Integrated Automation System (IAS), the Integrated Automation System (IAS) restarts the normally closed remote control valve IV (V11), and when the pressure of the fire fighting pipe IV (G4) is reduced to p15, the pressure switch VI (18) is set to be lower than p15 and automatically starts the main fire pump II (102);

2) the third pressure sensor (12) indicates a pressure signal to the Integrated Automation System (IAS), and the second main fire pump (102) is manually stopped from the Integrated Automation System (IAS);

3) when the pressure is reduced to p16, the pressure sensor five (20) sends an alarm signal to an Integrated Automation System (IAS);

4) the pressure setting P15 > P16 > 7 bar.

Technical Field

The invention belongs to the technical field of fire extinguishing systems for special ships, and particularly relates to a multistage pressure maintaining fire fighting device and a control method.

Background

Ships need to travel offshore, and can only save oneself the very first time in case of a fire, and the fire control unit is the fire extinguishing measure who guarantees ship safety, so require the fire control unit to have very high reliability, especially on high-end ocean engineering special type boats and ships, because the running cost is high, in case the shutdown loss that brings of taking place the conflagration is very big, so do not save to increase the input on the fire extinguishing system to realize high reliability and automated control.

The pressure required by the classification society for any fire hydrant on the fire main pipe is not lower than 2.8 bar; the inlet pressure of the foam fire extinguishing device of the helicopter platform is not lower than 7bar, pumps with different pressures are required to be configured or pressure reduction treatment is required according to different pressure requirements of a main hull fire-fighting looped network and a helicopter platform fire-fighting device, and the prior general ship fire-fighting device uses a plurality of pumps which are connected in parallel, so that the device has the following problems and disadvantages:

1) the pumps with different pressures are started and stopped independently, when a fire disaster occurs, the multi-pump starting and stopping sequence is realized by manpower judgment, time and labor are wasted, the operation requirement is high, and the optimal time for fire fighting and fire extinguishing is delayed easily.

2) And no pipeline pressure maintaining measure is adopted, once slight leakage exists, the main fire pump is started and stopped frequently, energy is wasted, and the pump is easy to damage.

3) The main hull fire-fighting looped network and the helicopter platform fire-fighting device are supplied by adopting pumps and pipelines with respective pressures, resultant force cannot be formed for use, and the pumps are not connected in parallel, so that the flow configuration of the pumps is high, and the cost is high.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a multistage pressure maintaining fire protection device and a control method thereof, and aims to solve the problems in the background art.

In order to achieve the purpose, the invention provides the following technical scheme: a multistage pressure maintaining fire fighting device and a control method are provided with three pump sets, wherein the three pump sets comprise a first pump set provided with a first main fire pump, a second pump set provided with a second main fire pump and a third pump set provided with a third main fire pump, the first main fire pump and the third main fire pump are both low-pressure pumps, the second main fire pump is a high-pressure pump, and the first main fire pump, the second main fire pump and the third main fire pump are connected in parallel;

the fire fighting system is characterized in that a first main fire pump, a first pressure maintaining tank, a third pressure switch, a fourth pressure switch, a first port seabed door, a second pressure sensor, a third one-way valve, a fourth one-way valve, a second remote control valve, a signal control line, a motor control disc and a first fire fighting pipe are arranged in a first pump set, wherein the first pressure maintaining pump and the first pressure maintaining tank are both fixedly arranged on a bypass pipeline of the first main fire pump, the first main fire pump absorbs water through the first port seabed door, the first main fire pump conveys fire fighting water to a main ship fire fighting looped network through the first remote control valve for fire fighting through the fire fighting pipe, the fourth pressure switch, the motor control disc and the first pressure maintaining pump are connected into the comprehensive automatic system through the signal control line, the third pressure switch and the first main fire pump are connected into the comprehensive automatic system through the signal control line, the second pressure sensor and the second remote control valve are connected into the comprehensive automatic system for control, the third check valve and the fourth check valve are fixedly installed on a main pipeline and a bypass pipeline of the first main fire pump respectively and are used for preventing the first main fire pump and the first pressure maintaining pump from being communicated with each other when in operation;

the fire fighting system is characterized in that a second main fire pump, a second pressure maintaining tank, a fifth pressure switch, a sixth pressure switch, a subsea door, a third pressure sensor, a fifth pressure sensor, a first check valve, a second check valve, a third remote control valve, a fourth remote control valve, a fifth remote control valve, a signal control line, a motor control panel, a second fire fighting pipe and a fourth fire fighting pipe are arranged in the second pump set, wherein the second pressure maintaining pump and the second pressure maintaining tank are both fixedly arranged on a bypass pipeline of the second main fire pump, the second main fire pump absorbs water through the subsea door, the second main fire pump controls the fire fighting water to be delivered to a fire fighting ring network of a main ship body through the second remote control valve, the third pressure sensor, the motor control panel and the second pressure maintaining tank are controlled in parallel through the signal control line to be connected into the integrated automation system, the sixth pressure switch, the motor control panel and the second main fire fighting pump are controlled in parallel through the signal control line to be connected into the integrated automation system, the third pressure sensor and the fifth pressure sensor are connected into a comprehensive automation system for control, and the first check valve and the second check valve are fixedly installed on a main pipeline and a bypass pipeline of the second main fire pump respectively and are used for preventing the second main fire pump and the second pressure maintaining pump from being communicated with each other when in operation;

the fire fighting system is characterized in that a third pump set is provided with a third main fire pump, a third pressure maintaining tank, a first pressure switch, a second pressure switch, a starboard seabed door, a first pressure sensor, a fifth one-way valve, a sixth one-way valve, a first remote control valve, a signal control line, a motor control disc and a third fire fighting pipe, wherein the third pressure maintaining pump and the third pressure maintaining tank are fixedly arranged on a bypass pipeline of the third main fire pump, the third fire fighting pump absorbs water through the starboard seabed door, the third main fire fighting pump controls the fire fighting water to be delivered to a main ship fire fighting looped network through the third fire fighting pipe and the first remote control valve to extinguish fire, the first pressure switch, the motor control disc and the third pressure maintaining tank are connected into the integrated automatic system through the signal control line, the second pressure switch, the motor control disc and the third remote control valve are connected into the integrated automatic system through the signal, the first pressure sensor and the first remote control valve are connected into the integrated automatic system to control line to control, and the fifth check valve and the sixth check valve are fixedly installed on a main pipeline and a bypass pipeline of the third main fire pump respectively and are used for preventing the third main fire pump and the third pressure maintaining pump from being communicated with each other when running.

According to the technical scheme, a throttling orifice plate is further arranged on a pipeline between a remote control valve III and a remote control valve V in the pump group II, the throttling orifice plate is controlled through a manual valve, and the manual valve is set to be in a normally-closed state.

Further optimize this technical scheme, when the main fire pump two in the pump package two is through the submarine door absorption water source, fire water supplies main hull fire control looped netowrk through orifice plate and fire control pipe two, or controls water supply through fire control pipe four through remote control valve four and gives helicopter platform fire control unit.

Further optimizing the technical scheme, the helicopter platform fire fighting device is designed to be of a foam fire extinguishing type and used for extinguishing fire caused by fuel leakage in the area of the airplane platform, the helicopter platform fire fighting device is provided with a flow switch, when the fire happens, a nozzle automatically sprays fire extinguishing liquid, the flow switch is activated, signals are transmitted to the comprehensive automation system, and the comprehensive automation system restarts corresponding components in the remote control valve IV and the pump group II.

Further optimize this technical scheme, main hull fire control looped netowrk disposes pressure sensor four, and the four signal access of pressure sensor synthesizes automatic system, and fire hose one, fire hose two and fire hose three supply main hull fire control looped netowrk with fire water, supply the fire hydrant and other fire control facilities of each point on the main hull fire control looped netowrk to use.

Further optimize this technical scheme, pressurize jar one, pressurize jar two and pressurize jar three are the gasbag type, and when the slight change of water pressure in fire extinguishing systems, the automatic inflation shrink of pressure tank gasbag can have certain cushioning effect to hydraulic change, can guarantee that the water pressure of system is stable, and pressurize pump and main fire pump can not be because of frequent opening of the change of pressure.

A control method of a multistage pressure maintaining fire fighting device is based on the multistage pressure maintaining fire fighting device to carry out operation control, and comprises the following three methods:

a control method for the first pressure maintaining pump, the second pressure maintaining pump and the third pressure maintaining pump;

a control method for a main hull fire fighting looped network, a main fire pump I, a main fire pump II and a main fire pump III;

a control method for the helicopter platform fire fighting device and the main fire pump II.

Further optimizing the technical scheme, the control method of the first pressure maintaining pump, the second pressure maintaining pump and the third pressure maintaining pump comprises the following specific steps:

1) the normal working pressure of the main hull fire fighting looped network is p4, the pressure sensor IV is used for displaying the looped network pressure of the main hull fire fighting looped network, the remote control valve I and the remote control valve II are normally open, the pump set auxiliary branch pipes of the main fire pump I and the main fire pump III, the fire fighting pipe I and the fire fighting pipe III are communicated with the main hull fire fighting looped network, and the pressure indication of any pressure sensor and the pressure switch has the same effect;

2) setting the pressure of a pressure switch I in the main hull fire-fighting looped network to be reduced to p2, sending a signal of the pressure switch I to a motor control panel to automatically start a third pressure maintaining pump, and feeding the running state back to the comprehensive automation system, and if the pressure switch I rises back to p4, automatically stopping the third pressure maintaining pump;

3) the normal working pressure of the helicopter platform fire fighting device is p5, when the pressure switch five is set to be reduced to the pressure p7, the pressure switch five signals to the motor control panel to automatically start the second pressure retaining pump, and if the pressure of the pressure switch five is increased back to p5, the second pressure retaining pump is automatically stopped;

4) the pressure p5 > p4 > p1 > p 2.

Further optimizing the technical scheme, the control method for the main hull fire fighting looped network, the first main fire pump, the second main fire pump and the third main fire pump comprises the following specific steps:

1) the normal working pressure of the fire-fighting looped network of the main ship body is p4, when the pressure of the pressure switch III is reduced to p11, the pressure switch III signals to the motor control panel automatically start the first main fire-fighting pump and feed the running state back to the integrated automation system, and the pressure sensor II indicates a pressure signal to the integrated automation system;

2) when the pressure of the pressure switch II is reduced to p12, the pressure switch II signals to the motor control panel to automatically start the main fire pump III and feed the running state back to the integrated automation system, and the pressure sensor I indicates a pressure signal to the integrated automation system;

3) when the pressure of the fire-fighting looped network of the main ship body is reduced to p13, the pressure sensor IV sends an alarm signal to the integrated automation system, the integrated automation system opens the remote control valve V through a signal control line, the pressure switch VI is set to be lower than p15, the main fire pump II is automatically started, and the pressure sensor III indicates a pressure signal to the integrated automation system;

4) manually stopping the first main fire pump, the second main fire pump and the third main fire pump from the comprehensive automatic system;

5) the pressure p5 > p7 > p15 > p4 > p1 > p2 > p11 > p12 > p13 > 2.8 bar.

Further optimizing the technical scheme, the control method for the helicopter platform fire fighting device and the main fire pump II comprises the following specific steps:

1) when a fire disaster happens, the flow switch is activated, a signal is transmitted to the comprehensive automatic system, the comprehensive automatic system starts the normally closed remote control valve IV again, and when the pressure of the fire fighting pipe IV is reduced to p15, the pressure switch VI is set to be lower than p15, and the main fire pump II is started automatically;

2) the pressure sensor III indicates a pressure signal to the comprehensive automatic system, and the main fire pump II stops manually from the comprehensive automatic system;

3) when the pressure is reduced to p16, the pressure sensor five sends an alarm signal to the integrated automation system;

4) the pressure setting P15 > P16 > 7 bar.

Compared with the prior art, the invention provides a multistage pressure maintaining fire fighting device and a control method, and the multistage pressure maintaining fire fighting device has the following beneficial effects:

1. according to the multistage pressure maintaining fire fighting device and the control method, the high-pressure pump and the low-pressure pump are combined and configured, and the multiple pumps are connected in parallel, so that the multistage pressure maintaining fire fighting device can be used for a helicopter platform and a main hull ring network, the requirement of fire extinguishing of a whole ship can be met by adopting low flow configuration, and the purchase cost of the pumps and the operation cost of a fire fighting system are reduced.

2. The multistage pressure maintaining fire fighting device and the control method have the advantages that pressure maintaining is conducted on a pipeline system when pressure on a fire main pipe fluctuates slightly through the pressure maintaining tank and the small-flow pressure maintaining pump, the pressure switch is configured, the pressure sensor monitors the pipeline pressure in real time and accurately controls the pump to start and stop, only when large-flow fire extinguishment is needed, the pipeline pressure is detected to be reduced to a set value, other large-flow main pumps are started in sequence, the main pump is prevented from being started frequently, energy is saved, the service life of the main pump is prolonged, and multistage pressure maintaining automatic control and remote control are achieved through the IAS.

Drawings

Fig. 1 is a schematic structural diagram of a multistage pressure maintaining fire fighting device according to the present invention;

FIG. 2 is a schematic diagram of a conventional fire fighting device for a ship;

FIG. 3 is a diagram showing the pump start-up and pressure comparison of a multistage pressure maintaining fire fighting device according to the present invention;

fig. 4 is a schematic structural diagram of a helicopter platform fire fighting apparatus in a multistage pressure maintaining fire fighting apparatus according to the present invention.

In the figure: 101. a first main fire pump; 102. a second main fire pump; 103. a third main fire pump; 201. a first pressure maintaining pump; 202. a second pressure maintaining pump; 203. a pressure maintaining pump III; 301. a first pressure maintaining tank; 302. a second pressure maintaining tank; 303. a third pressure maintaining tank; 4. a first pressure sensor; 6. a second pressure sensor; 12. a third pressure sensor; 13. a first pressure switch; 14. a second pressure switch; 15. a third pressure switch; 16. a pressure switch IV; 17. a pressure switch V; 18. a pressure switch six; 19. a fourth pressure sensor; 20. a fifth pressure sensor; m1, port sea bottom door; m2, subsea door; m is³A starboard sea chest; v1, a one-way valve I; v2 and a check valve II; v3, check valve III; v4, check valve IV; v5, a check valve V; v6, check valve six; v7, manual valve; v8, a remote control valve I; v9, a remote control valve II; v10, remote control valve III; v11, remote control valve IV; v12, a remote control valve V; s1, a throttle orifice plate; s2, a flow switch; w1, main hull fire-fighting looped network; w2, helicopter platform fire fighting equipment; IAS, integrated automation system; e1, signal control line; MCC, motor control panel; g1, a first fire fighting pipe; g2, a second fire fighting pipe; g3, fire hose III; g4 and a fire fighting pipe IV.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The first embodiment is as follows:

referring to fig. 1-4, a multistage pressure maintaining fire fighting device and a control method thereof are provided with three pump sets, including a first pump set provided with a first main fire pump 101, a second pump set provided with a second main fire pump 102, and a third pump set provided with a third main fire pump 103, wherein the first main fire pump 101 and the third main fire pump 103 are both low-pressure pumps, the second main fire pump 102 is a high-pressure pump, and the first main fire pump 101, the second main fire pump 102 and the third main fire pump 103 are connected in parallel.

The starting set values of the first main fire pump 101 and the second main fire pump 102 are 4.8bar-5.8bar, the starting set value of the third main fire pump 103 is 8.3bar-9bar, the starting set values of the first pressure maintaining pump 201 and the third pressure maintaining pump 203 are 5.8bar-7.5bar, and the starting set value of the second pressure maintaining pump 202 is 9bar-12 bar.

Aiming at the requirement of the inlet pressure of the airplane platform fire fighting device W2 not less than 7bar, one high-pressure pump is specially used for the airplane platform fire fighting device W2, and aiming at the requirement of the main hull fire fighting looped network W1 not less than 2.8bar, two low-pressure pumps are connected in parallel, and the second main fire pump 102 can be used for the helicopter platform fire fighting device W2 and can also be used for the main hull fire fighting looped network W1 after being decompressed by a throttle orifice plate S1. According to the SOLAS requirement, the total discharge capacity of all fire pumps needs to be larger than one maximum area fire extinguishing flow plus the flow of two fire hydrants, if the airplane platform separation area of the airplane platform fire fighting device W2 is the maximum fire extinguishing flow area, the second main fire pump 102 is the maximum flow pump, the flow of the second main fire pump 102 meets the flow requirement of the airplane platform fire fighting device W2 area, if a certain separation area in the main hull fire protection looped network W1 is the maximum fire extinguishing flow area, the three pumps are connected in parallel to meet the maximum flow, and the fire extinguishing requirement of the whole ship is met by adopting low-flow configuration.

In this embodiment, a maximum fire suppression flow area of a submersible support vessel is 196m for a submersible plant room³The maximum flow demand of the helicopter platform is 140m³H, maximum requirement 196m³H plus two 20m³The total flow demand of the whole ship is 2 according to the fire hydrant36m³H, the first main fire pump 101 and the third main fire pump 103 can be selected to be 80m³The second type main fire pump 102 is 145m³H @12.5bar, three pumps are connected in parallel to form 305m³H meet the maximum flow demand, if the configuration according to fig. 2 is adopted, 101 and three main fire pumps 103 and 102 are not connected in parallel, the first main fire pump is selected, and the flow of the third main fire pump 103 is at least 236m³Half of the total/h, 118m³H, far exceeding 80m³The type selection of the/h shows that the scheme of the figure 1 can realize that the fire extinguishing requirement of the whole ship can be met by adopting a lower flow configuration.

As shown in FIG. 4, the fire fighting device W2 of the airplane platform mainly comprises a foam tank, a proportional mixing valve (3:100), a plurality of spray heads, an S2 flow switch and the like.

The first pump group is provided with a first main fire pump 101, a first pressure maintaining pump 201, a first pressure maintaining tank 301, a third pressure switch 15, a fourth pressure switch 16, a port sea chest door M1, a second pressure sensor 6, a three-way valve V3, a four-way valve V4, a second remote control valve V9, a signal control line E1, a motor control panel MCC and a first fire fighting pipe G1, wherein the first pressure maintaining pump 201 and the first pressure maintaining tank 301 are both fixedly arranged on a bypass pipeline of the first main fire pump 101, the first main fire pump 101 absorbs water through the port sea chest door M1, the first main fire pump 101 controls to convey fire water to a main fire hull W1 through the first fire fighting pipe G1 and the second remote control valve V9 to extinguish fire, the fourth pressure switch 16, the motor control panel and the first pressure maintaining pump 201 are controlled in parallel and connected into an integrated automation system IAS through the signal control line E1, the third pressure switch 15 and the first main fire pump 101 are controlled in parallel and connected into the integrated automation system IAS through the signal control line E1, the second pressure sensor 6 and the second remote control valve V9 are connected to the IAS for control, and the third check valve V3 and the fourth check valve V4 are fixedly installed on the main pipeline and the bypass pipeline of the first main fire pump 101 respectively and are used for preventing the first main fire pump 101 and the first pressure maintaining pump 201 from water crossing each other during operation.

The second pump group is provided with a second main fire pump 102, a second pressure maintaining pump 202, a second pressure maintaining tank 302, a fifth pressure switch 17, a sixth pressure switch 18, a subsea door M2, a third pressure sensor 12, a fifth pressure sensor 20, a first check valve V1, a second check valve V2, a third remote control valve V10, a fourth remote control valve V11, a fifth remote control valve V12, a signal control line E1, a motor control panel MCC, a second fire fighting pipe G2 and a fourth fire fighting pipe G4, wherein the second pressure maintaining pump 202 and the second pressure maintaining tank 302 are both fixedly arranged on a bypass pipeline of the second main fire pump 102, the second main fire pump 102 absorbs water through the subsea door M2, the second main fire fighting pump 102 controls to convey fire fighting water to a main fire fighting ship body W1 through the second remote control valve V12 through the second fire fighting pipe G2, the third pressure sensor 12, the motor control panel and the second pressure maintaining tank 302 are connected in parallel with a comprehensive fire fighting automation system MCC 1, the six pressure switches 18, the motor control disc MCC and the second main fire pump 102 are controlled in parallel and connected to the integrated automation system IAS through a signal control line E1, the three pressure sensors 12 and the five pressure sensors 20 are connected to the integrated automation system IAS for control, and the first check valve V1 and the second check valve V2 are fixedly installed on a main pipeline and a bypass pipeline of the second main fire pump 102 respectively and used for preventing the second main fire pump 102 and the second pressure maintaining pump 202 from being connected with each other in series when in operation.

A main fire pump III 103, a pressure maintaining pump III 203, a pressure maintaining tank III 303, a pressure switch I13, a pressure switch II 14 and a starboard sea bottom door m are arranged in the pump group III³The fire fighting system comprises a first pressure sensor 4, a five-way valve V5, a six-way valve V6, a first remote control valve V8, a signal control line E1, a motor control panel MCC and a fire fighting pipe III G3, wherein a third pressure maintaining pump 203 and a third pressure maintaining tank 303 are fixedly installed on a bypass pipeline of a third main fire fighting pump 103, and the third main fire fighting pump 103 passes through a starboard submarine gate m³The main fire pump III 103 is controlled to convey fire water to a main hull fire-fighting looped network W1 through a fire-fighting pipe III G3 through a remote control valve I V8 to extinguish fire, the pressure switch I13, the motor control disc MCC and the pressure maintaining tank III 303 are controlled in parallel and connected to the integrated automation system IAS through a signal control line E1, the pressure switch II 14, the motor control disc MCC and the main fire pump III 103 are controlled in parallel and connected to the integrated automation system IAS through a signal control line E1, the pressure sensor I4 and the remote control valve I V8 are connected to the integrated automation system IAS to control, and the one-way valve V5 and the one-way valve six V6 are fixedly installed on a main pipeline and a bypass pipe of the main fire pump III 103 respectivelyAnd on the road, the water leakage between the main fire pump III 103 and the pressure maintaining pump III 203 during operation is avoided.

The IAS can remotely collect, judge and control signal instructions of all components through a signal control line E1, and adjust and set switch values, alarm values, logic control relations and the like according to needs, so as to realize multi-stage pressure maintaining automatic control and remote control.

Specifically, a throttle orifice plate S1 is further arranged on a pipeline between a remote control valve III V10 and a remote control valve V12 in the pump group II, the throttle orifice plate S1 is controlled through a manual valve V7, and the manual valve V7 is set to be in a normally closed state.

Specifically, when the second main fire pump 102 in the second pump group absorbs water through the subsea door M2, fire water is supplied to the main hull fire protection ring network W1 through the orifice plate S1 and the second fire protection pipe G2, or is supplied to the helicopter platform fire protection device W2 through the fourth fire protection pipe G4 and the fourth remote control valve V11.

Specifically, the helicopter platform fire fighting device W2 is designed as a foam fire extinguishing type for extinguishing a fire caused by fuel leakage in an aircraft platform area, the helicopter platform fire fighting device W2 is provided with a flow switch S2, when a fire occurs, fire extinguishing liquid is automatically sprayed from a spray head, the flow switch S2 is activated, a signal is transmitted to the integrated automation system IAS, and the integrated automation system IAS restarts a remote control valve four V11 and corresponding components in the pump group two.

Specifically, the main hull fire fighting looped network W1 is provided with a pressure sensor four 19, the pressure sensor four 19 is connected with the integrated automation system IAS through signals, and the fire fighting pipe one G1, the fire fighting pipe two G2 and the fire fighting pipe three G3 supply fire fighting water to the main hull fire fighting looped network W1 for fire hydrants at various points on the main hull fire fighting looped network W1 and other fire fighting facilities.

Specifically, pressurize jar 301, two 302 and three 303 of pressurize jar are the gasbag type, and when the slight change of water pressure in fire extinguishing system, the automatic inflation shrink of pressure tank gasbag can have certain cushioning effect to hydraulic change, can guarantee that the water pressure of system is stable, and pressurize pump and main fire pump can not be because of frequent opening of the change of pressure.

In this embodiment, the first pressure maintaining tank 301 and the third pressure maintaining tank 303 are 100 liter capacity air bags, pre-inflating is performed at 2bar, when the pressure of the ring network is 8bar, fire water enters the pressure maintaining tank, the air bags are compressed, the pressure rises to 8bar, when the pressure of the ring network drops, the air bags expand, the water in the tank is pressed out to the ring network, ring network liquid and pressure are supplemented, and when the pressure of the ring network slightly fluctuates, pressure balance can be automatically maintained. Similarly, the second pressure maintaining tank 302 is of a 100-liter capacity air bag type, pre-charging is carried out at 2bar, when the pressure of the looped network is 12.5bar, fire water enters the pressure maintaining tank, the air bag is compressed, the pressure rises to 12.5bar, when the pressure of the looped network drops, the air bag expands, and water in the tank is pressed out to the looped network to supplement looped network liquid and pressure.

Example two:

a control method of a multistage pressure maintaining fire fighting device is based on the multistage pressure maintaining fire fighting device in the first embodiment, and comprises the following three methods:

a control method for the first pressure maintaining pump 201, the second pressure maintaining pump 202 and the third pressure maintaining pump 203;

a control method for the main hull fire protection looped network W1, the first main fire pump 101, the second main fire pump 102 and the third main fire pump 103;

a control method for the helicopter platform fire fighting device W2 and the second main fire pump 102.

Specifically, the control method for the first pressure maintaining pump 201, the second pressure maintaining pump 202 and the third pressure maintaining pump 203 comprises the following specific steps:

1) the normal working pressure of the main hull fire protection looped network W1 is p4, the pressure sensor IV 19 is used for displaying the looped network pressure of the main hull fire protection looped network W1, the remote control valve I V8 and the remote control valve II V9 are normally open, the pump group auxiliary branch pipes of the main fire pump I101 and the main fire pump III 103, the fire protection pipe I G1 and the fire protection pipe III G3 are communicated with the main hull fire protection looped network W1, and the pressure indication of any pressure sensor and the pressure switch has the same effect;

2) setting the pressure at the first pressure switch 13 in the main hull fire-fighting looped network W1 to be reduced to p2, sending a signal of the first pressure switch 13 to a motor control panel MCC to automatically start the third pressure-maintaining pump 203, and feeding back the running state to the integrated automation system IAS, and if the first pressure switch 13 rises to p4, automatically stopping the third pressure-maintaining pump 203;

3) the normal working pressure of the helicopter platform fire fighting device W2 is p5, when the pressure switch five 17 is set to be reduced to the pressure p7, the pressure switch five 17 signals the motor control panel MCC to automatically start the second pressure retaining pump 202, and if the pressure of the pressure switch five 17 is increased back to p5, the second pressure retaining pump 202 is automatically stopped;

4) the pressure p5 > p4 > p1 > p 2.

Specifically, the control method for the main hull fire protection looped network W1, the first main fire pump 101, the second main fire pump 102 and the third main fire pump 103 comprises the following specific steps:

1) the normal working pressure of the main hull fire-fighting looped network W1 is p4, when the pressure of a pressure switch III 15 is reduced to p11, a signal of the pressure switch III 15 is sent to a motor control panel MCC to automatically start a main fire pump I101, the running state is fed back to the integrated automation system IAS, and a pressure sensor II 6 indicates a pressure signal to the integrated automation system IAS;

2) when the pressure of the second pressure switch 14 is reduced to p12, the second pressure switch 14 sends a signal to the motor control panel MCC to automatically start the third main fire pump 103 and feeds the running state back to the IAS, and the first pressure sensor 4 indicates a pressure signal to the IAS;

3) when the pressure of the main hull fire-fighting looped network W1 is reduced to p13, the fourth pressure sensor 19 sends an alarm signal to the integrated automation system IAS, the integrated automation system IAS opens the five V12 remote control valve through a signal control line E1, the sixth pressure switch 18 is set to be lower than p15 at the moment, the second main fire pump 102 is automatically started, and the third pressure sensor 12 indicates a pressure signal to the integrated automation system IAS;

4) manually stopping a first main fire pump 101, a second main fire pump 102 and a third main fire pump 103 from an IAS (integrated automation system);

5) the pressure p5 > p7 > p15 > p4 > p1 > p2 > p11 > p12 > p13 > 2.8 bar.

Specifically, the method for controlling the helicopter platform fire fighting device W2 and the main fire pump II 102 comprises the following specific steps:

1) the helicopter platform fire fighting device W2 mainly comprises a foam tank, a proportional mixing valve (3:100), a plurality of spray heads, an S2 flow switch and the like, wherein water is filled in a pipeline all the time, the pressure of 7bar is kept, when a fire breaks out, the spray heads are automatically started at a preset temperature of 68 ℃ to spray fire extinguishing liquid, when the fire breaks out, the flow switch S2 is activated, signals are transmitted to an integrated automation system IAS, the integrated automation system IAS starts a normally closed remote control valve four V11 again, and when the pressure of a fire fighting pipe four G4 is reduced to p15, a pressure switch six 18 is set to be lower than p15, and a main fire pump two 102 is automatically started.

2) The continuous fire water is conveyed to the W2 helicopter platform fire fighting device from the main fire pump II 102 through the fire fighting pipe IV G4 to reach the proportional mixing valve and absorb the high-concentration foam stock solution AFFF in the foam tank through the bypass, and then the mixture is mixed with seawater according to the proportion of 3:100, and a foam liquid for fire extinguishing is discharged from the nozzle through a flow switch S2 to extinguish the fire, a pressure signal is sent from a pressure sensor iii 12 to the integrated automation system IAS, and the main fire pump ii 102 is manually stopped from the integrated automation system IAS.

3) When the pressure drops to p16, the pressure sensor five 20 sends an alarm signal to the integrated automation system IAS.

4) The pressure was set p15 > p16 > 7 bar.

In the present embodiment, p4 is 8bar, p1 is 6bar, p7 is 9bar, p5 is 12.5bar, p11 is 5.2bar, p12 is 5bar, p13 is 4.8bar, p15 is 8.5bar, and p16 is 8.3 bar.

Example three:

by adopting the two embodiments and combining the operation of a certain type of high-end diving support ship according to the actual conditions of a shipyard, partial analysis is performed, and the method can be further flexibly expanded into different configurations according to the actual needs on the ship as follows:

the number of the main fire-fighting pumps and the number of the pressure-maintaining pumps are respectively 3, the number can be expanded to be more than 3 according to actual ship arrangement, the flexible configuration is realized, and the requirement that the total flow and the pressure are more than the flow and the pressure of the maximum fire-fighting area can be met.

The start-stop pressure setting of each pressure maintaining pump and the main fire pump can be set according to actual pipeline arrangement so as to achieve the optimal start-stop working condition point.

The number, set value, alarm signal and logic control relation of the pressure switches, the pressure sensors and the flow switches can be set in the working pressure range of 2.8bar at the lowest pressure and 12.5bar at the highest pressure according to actual needs so as to realize the optimal pressure maintaining and automatic starting mode.

The invention has the beneficial effects that:

1. according to the multistage pressure maintaining fire fighting device and the control method, the high-pressure pump and the low-pressure pump are combined and configured, and the multiple pumps are connected in parallel, so that the multistage pressure maintaining fire fighting device can be used for a helicopter platform and a main hull ring network, the requirement of fire extinguishing of a whole ship can be met by adopting low flow configuration, and the purchase cost of the pumps and the operation cost of a fire fighting system are reduced.

2. The multistage pressure maintaining fire fighting device and the control method have the advantages that pressure maintaining is conducted on a pipeline system when pressure on a fire main pipe fluctuates slightly through the pressure maintaining tank and the small-flow pressure maintaining pump, the pressure switch is configured, the pressure sensor monitors the pipeline pressure in real time and accurately controls the pump to start and stop, only when large-flow fire extinguishment is needed, the pipeline pressure is detected to be reduced to a set value, other large-flow main pumps are started in sequence, the main pump is prevented from being started frequently, energy is saved, the service life of the main pump is prolonged, and multistage pressure maintaining automatic control and remote control are achieved through the IAS.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.