CN112426650A - Fire fighting system, speed regulating device and speed regulating method of FPSO - Google Patents
Fire fighting system, speed regulating device and speed regulating method of FPSO Download PDFInfo
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- CN112426650A CN112426650A CN202011321159.5A CN202011321159A CN112426650A CN 112426650 A CN112426650 A CN 112426650A CN 202011321159 A CN202011321159 A CN 202011321159A CN 112426650 A CN112426650 A CN 112426650A
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- fire
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/28—Accessories for delivery devices, e.g. supports
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C99/00—Subject matter not provided for in other groups of this subclass
- A62C99/0009—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames
- A62C99/0072—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames using sprayed or atomised water
Abstract
The invention discloses a fire fighting system of an FPSO (floating production storage and offloading), which comprises a main fire fighting pump, a fire fighting lift pump, a fire fighting engine and a speed regulating device, wherein the fire fighting lift pump is connected with the main fire fighting pump, and the fire fighting engine is connected with the main fire fighting pump and the fire fighting lift pump; the speed regulating device is connected with the fire engine and used for detecting the pressure of the liquid outlet of the main fire pump and regulating the rotating speed of the fire engine according to the pressure of the liquid outlet so as to change the rotating speed of the main fire pump and the fire lift pump to enable the pressure of the liquid outlet of the main fire pump to be within a preset range. By adopting the invention, the rotating speed of the fire-fighting lift pump and the rotating speed of the main fire-fighting pump can be coordinated with each other, and the pressure in the pipeline of the fire-fighting system is maintained in a preset range, so that the pressure change caused by the draught of the ship body is reduced, the risk of damaging the pipeline and equipment is reduced, and the stability and the safety of the FPSO fire-fighting system are improved.
Description
Technical Field
The invention relates to a fire fighting system, a speed regulating device and a speed regulating method of an FPSO.
Background
The general purpose FPSO has relatively strict requirements on the fire fighting system. A significant economic loss may result in a problem with the fire protection system. The power sources of the current international fire fighting system are generally divided into a diesel engine drive and an electric drive. The diesel drive is relatively more stable and safer than the electric drive. However, most of diesel oil drives are constant in speed, and when the diesel oil fire pump runs, the pressure of the outlet of the main fire pump fluctuates along with the draught of the ship body, so that the pressure in the pipeline of the fire-fighting system is unstable.
Disclosure of Invention
The invention aims to overcome the defect of unstable pipeline pressure of a fire-fighting system of an FPSO (floating production storage and offloading) in the prior art, and provides a fire-fighting system, a speed regulating device and a speed regulating method of the FPSO.
The invention solves the technical problems through the following technical scheme:
a fire fighting system of an FPSO (floating production storage and offloading) is characterized by comprising a main fire fighting pump, a fire fighting lift pump, a fire fighting engine and a speed regulating device, wherein the fire fighting lift pump is connected with the main fire fighting pump, and the fire fighting engine is connected with the main fire fighting pump and the fire fighting lift pump;
the speed regulating device is connected with the fire engine and used for detecting the pressure of the liquid outlet of the main fire pump and regulating the rotating speed of the fire engine according to the pressure of the liquid outlet so as to change the rotating speed of the main fire pump and the fire lift pump to enable the pressure of the liquid outlet of the main fire pump to be within a preset range.
In this scheme, according to the liquid outlet pressure of main fire pump, the rotational speed of fire control elevator pump and main fire pump is adjusted through the output rotational speed of control fire engine, and fire control elevator pump and main fire pump are connected, thereby make the rotational speed of fire control elevator pump and the rotational speed of main fire pump can coordinate each other, pressure in the fire extinguishing system pipeline is maintained and is predetermineeing the scope, thereby reduce the pressure change because of the hull drafts the water and causes, reduce the risk that pipeline and equipment damaged, FPSO fire extinguishing system's stability and security have been increased.
Preferably, the speed regulating device comprises a pressure sensor and a controller; the pressure sensor is arranged at the liquid outlet of the main fire pump, the controller is electrically connected with the pressure sensor and the fire engine, and the controller is used for receiving the detection signal of the pressure sensor and generating a corresponding control signal according to the detection signal to adjust the rotating speed of the fire engine so as to change the rotating speed of the main fire pump and the fire lift pump to enable the pressure of the liquid outlet of the main fire pump to be within a preset range.
Preferably, the fire fighting system further comprises a hydraulic lifting device, and the hydraulic lifting device is connected with the fire engine and the fire lift pump and is used for driving the fire lift pump to operate.
In this scheme, transmit the output of fire engine to fire control elevator pump department through hydraulic lifting device to the rotational speed of the fire control elevator pump that the regulation is located near the submarine door.
Preferably, the hydraulic lifting device comprises a hydraulic pump and a hydraulic motor, the hydraulic pump is connected with the fire engine, the hydraulic motor is connected with the hydraulic pump through a control loop, and the fire lift pump is connected with the hydraulic pump.
Preferably, along the flowing direction of the liquid, an oil tank, the hydraulic pump, an oil supply pipe, the hydraulic motor and an oil return pipe are sequentially arranged in the control loop; wherein, return oil pipe with the oil tank intercommunication.
Preferably, the fire fighting system further comprises a subsea door, the inlet of the fire lift pump is connected to the subsea door, and the outlet of the fire lift pump is connected to the inlet of the main fire pump.
In this scheme, the fire control elevator pump is connected with the submarine door, can introduce the sea water to fire extinguishing system in, the fire control elevator pump still is connected with main fire pump in addition to the sea water that will introduce transmits to main fire pump department, and through the synergism of fire control elevator pump and main fire pump, maintains the pressure in the fire-fighting pipeline at predetermined within range.
Preferably, the fire fighting system further comprises a fire fighting collar, and the liquid outlet of the main fire fighting pump is connected with the fire fighting collar.
In this scheme, the fire control ring canal can arrange in corresponding room to carry the sea water that main fire pump transmission came to the room that corresponds in, when needs fire control were handled, can put out a fire to corresponding room and wait fire control and handle.
A speed regulation device of a fire-fighting system of an FPSO is characterized in that the speed regulation device is applied to the fire-fighting system;
the speed regulating device comprises a pressure sensor and a controller; the pressure sensor is arranged at the liquid outlet of the main fire pump, the controller is electrically connected with the pressure sensor and the fire engine, and the controller is used for receiving the detection signal of the pressure sensor and generating a corresponding control signal according to the detection signal to adjust the rotating speed of the fire engine so as to change the rotating speed of the main fire pump and the fire lift pump to enable the pressure of the liquid outlet of the main fire pump to be within a preset range.
In this scheme, fire extinguishing system's speed adjusting device can include pressure sensor and controller, can direct detection main fire pump's liquid outlet department pressure through pressure sensor, the controller can generate control signal control fire engine operation according to this pressure, thereby make the rotational speed of fire control elevator pump and the rotational speed of main fire pump can coordinate each other, pressure in the fire extinguishing system pipeline is maintained at the scope of predetermineeing, thereby reduce the pressure change because of the hull drafts and causes, reduce the risk that pipeline and equipment damaged, FPSO fire extinguishing system's stability and security have been increased.
A speed regulation method of a fire fighting system of an FPSO is characterized in that the speed regulation method adopts the fire fighting system, and comprises the following steps:
the speed regulating device detects the pressure of a liquid outlet of the main fire pump, generates a corresponding control signal according to the pressure of the liquid outlet and sends the control signal to the fire engine;
and the fire engine receives the control signal and changes the rotating speed of the main fire pump and the fire-fighting lift pump according to the control signal so as to enable the pressure of the liquid outlet of the main fire pump to be in a preset range.
In this scheme, the adoption is as above-mentioned fire extinguishing system carries out the speed governing, liquid outlet pressure through according to main fire pump, the rotational speed of fire control elevator pump and main fire pump is adjusted to the output rotational speed through control fire engine, and fire control elevator pump and main fire pump are connected, thereby make the rotational speed of fire control elevator pump and the rotational speed of main fire pump can coordinate each other, pressure in the fire extinguishing system pipeline is maintained at the scope of predetermineeing, thereby reduce the pressure variation because of the hull drafts and causes, reduce the risk of pipeline and equipment damage, FPSO fire extinguishing system's stability and security have been increased.
Preferably, the speed regulating device comprises a pressure sensor and a controller; the pressure sensor is arranged at the liquid outlet of the main fire pump, the controller is electrically connected with the pressure sensor and the fire engine,
speed adjusting device detects main fire pump's liquid outlet pressure to according to liquid outlet pressure generates corresponding control signal and sends to fire engine includes:
the pressure sensor detects the pressure of a liquid outlet of the main fire pump, generates a detection signal and sends the detection signal to the controller;
the controller receives the detection signal, generates a corresponding control signal according to the detection signal and sends the control signal to the fire engine;
the fire fighting system further comprises a hydraulic lifting device, the hydraulic lifting device comprises a hydraulic pump and a hydraulic motor, the hydraulic pump is connected with the fire engine, the hydraulic motor is connected with the hydraulic pump through a control loop, and the fire fighting lifting pump is connected with the hydraulic pump; then the process of the first step is carried out,
the fire engine receives the control signal, and changes the rotation speed of the main fire pump and the fire lift pump according to the control signal to enable the pressure of the liquid outlet of the main fire pump to be in a preset range, and the fire engine comprises:
the fire engine receives the control signal and changes the rotating speeds of the main fire pump and the hydraulic pump according to the control signal;
the hydraulic pump regulates a rotational speed of the hydraulic motor, and the hydraulic motor regulates a rotational speed of the fire lift pump.
The positive progress effects of the invention are as follows: according to the liquid outlet pressure of main fire pump, the rotational speed of fire control elevator pump and main fire pump is adjusted through the output rotational speed of control fire engine, and fire control elevator pump and main fire pump are connected, thereby make the rotational speed of fire control elevator pump and the rotational speed of main fire pump can coordinate each other, pressure in the fire extinguishing system pipeline is maintained at the scope of predetermineeing, thereby reduce the pressure variation because of the hull drafts the pressure that causes, reduce the risk that pipeline and equipment damaged, FPSO fire extinguishing system's stability and security have been increased.
Drawings
FIG. 1 is a schematic structural diagram of a fire fighting system of an FPSO according to an embodiment of the present invention;
FIG. 2 illustrates a method for regulating a speed of a fire protection system of an FPSO according to an embodiment of the present invention;
fig. 3 is a diagram illustrating another method for regulating a fire protection system of an FPSO according to an embodiment of the present invention.
Main fire pump 1
Hydraulic motor 7
Fire fighting grommet 12
Detailed Description
The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.
The embodiment of the invention provides a fire fighting system of an FPSO (floating production storage and offloading), as shown in figure 1, the fire fighting system comprises a main fire fighting pump 1, a fire fighting lift pump 10, a fire fighting engine 4 and a speed regulating device, wherein the fire fighting lift pump 10 is connected with the main fire fighting pump 1, and the fire fighting engine 4 is connected with the main fire fighting pump 1 and the fire fighting lift pump 10; speed adjusting device is connected with fire engine 4, and speed adjusting device is used for detecting the liquid outlet pressure of main fire pump 1 to according to the rotational speed of liquid outlet pressure adjustment fire engine 4, with the rotational speed that changes main fire pump 1 and fire control elevator pump 10, make the liquid outlet pressure of main fire pump 1 be in predetermineeing the within range. After the rotating speeds of the main fire pump 1 and the fire-fighting lift pump 10 are changed in the above mode, the overall characteristic curve of the fire pump is changed, and therefore the pressure value of a main ring pipe in a fire-fighting system is changed. The speed regulating device continuously corrects the rotating speeds of the main fire pump 1 and the fire-fighting lift pump 10 according to the outlet pressure value of the fire-fighting pump, dynamic balance is formed, and finally the pressure value in the main loop pipe can be maintained stably. That is to say, through the above-mentioned embodiment, the rotation speed of the fire lift pump 10 and the rotation speed of the main fire pump 1 can be coordinated with each other, and the pressure in the fire protection system pipeline is maintained in the preset range, so that the pressure change caused by the draught of the ship body is reduced, the risk of damage to the pipeline and the equipment is reduced, and the stability and the safety of the FPSO fire protection system are improved.
In practice, the fire engine 4 is typically a diesel engine.
As a preferred embodiment, as shown in fig. 1, the governor device includes a pressure sensor 2 and a controller 3; pressure sensor 2 sets up in the liquid outlet of main fire pump 1, and controller 3 is connected with pressure sensor 2 and fire engine 4 electricity, and controller 3 is used for receiving pressure sensor 2's detected signal to according to the corresponding control signal of detected signal generation regulation fire engine 4's rotational speed, make the liquid outlet pressure of main fire pump 1 be in presetting the within range with the rotational speed that changes main fire pump 1 and fire control elevator pump 10.
In a specific implementation, the pressure sensor 2 may be connected to the controller 3 through a signal line.
In a preferred embodiment, the fire fighting system further comprises a hydraulic lifting device connected to the fire engine 4 and the fire lift pump 10 for driving the fire lift pump 10 to operate.
In practice, the lift pump 10 is typically located at the bottom of the cabin and may be connected to a sea chest 11 for pumping seawater into the fire pipeline. The output of the fire engine 4 is transmitted to the fire lift pump 10 through the hydraulic lift device, thereby adjusting the rotation speed of the fire lift pump 10 located near the sea chest 11.
As a specific embodiment, as shown in fig. 1, the hydraulic lifting device includes a hydraulic pump 5 and a hydraulic motor 7, the hydraulic pump 5 is connected with the fire engine 4, the hydraulic motor 7 is connected with the hydraulic pump 5 through a control circuit, and the fire lift pump 10 is connected with the hydraulic pump 5.
In practice, the hydraulic pump 5 is generally disposed near the fire engine 4 and is connected to the fire engine 4; and the hydraulic motor 7 is controlled by a control circuit, the hydraulic motor 7 is usually arranged close to the fire lift pump 10 and is connected with the fire lift pump 10; so that the output of the fire engine 4 can be transmitted to the fire hoist pump 10 through the hydraulic pump 5 and the hydraulic motor 7.
As a specific embodiment, as shown in fig. 1, an oil tank 9, a hydraulic pump 5, an oil supply pipe 6, a hydraulic motor 7 and an oil return pipe 8 are sequentially arranged in the control circuit along the flowing direction of the liquid; wherein, the oil return pipe 8 is communicated with an oil tank 9.
In practical implementation, the oil tank 9 is connected with the hydraulic pump 5 and used for providing hydraulic oil for the control loop; the hydraulic pump 5 is connected with the hydraulic motor 7 through the oil supply pipe 6, and the hydraulic motor 7 is connected with the oil tank 9 through the oil return pipe 8, so that the hydraulic pump 5 operates to drive the hydraulic motor 7 to operate.
As a preferred embodiment, as shown in fig. 1, the fire fighting system further comprises a subsea door 11, wherein the liquid inlet of the fire lift pump 10 is connected to the subsea door 11, and the liquid outlet of the fire lift pump 10 is connected to the liquid inlet of the main fire pump 1. The fire lift pump 10 is connected with the sub sea door 11, can introduce the sea water into the fire extinguishing system, and in addition the fire lift pump 10 is still connected with the main fire pump 1 to the sea water that will introduce is transmitted to main fire pump 1 department, and through the synergism of fire lift pump 10 and main fire pump 1, maintains the pressure in the fire fighting pipeline at predetermined within range.
As a preferred embodiment, the fire fighting system further comprises a fire loop 12, as shown in fig. 1, the outlet of the main fire pump 1 being connected to the fire loop 12. The fire-fighting ring pipe 12 can be arranged in a corresponding room, so that seawater transmitted from the main fire-fighting pump 1 is conveyed to the corresponding room, and when fire-fighting treatment is needed, the corresponding room can be subjected to fire-fighting treatment such as fire extinguishing.
The embodiment of the invention also provides a speed regulating device of the FPSO fire-fighting system, which is applied to the fire-fighting system; as shown in fig. 1, the speed regulation device includes a pressure sensor 2 and a controller 3; pressure sensor 2 sets up in the liquid outlet of main fire pump 1, and controller 3 is connected with pressure sensor 2 and fire engine 4 electricity, and controller 3 is used for receiving pressure sensor 2's detected signal to according to the corresponding control signal of detected signal generation regulation fire engine 4's rotational speed, make the liquid outlet pressure of main fire pump 1 be in presetting the within range with the rotational speed that changes main fire pump 1 and fire control elevator pump 10. Can direct detection main fire pump 1's liquid outlet department pressure through pressure sensor 2, controller 3 can generate control signal control fire engine 4 operation according to this pressure, thereby make the rotational speed of fire control elevator pump 10 and main fire pump 1's rotational speed coordinate each other, pressure in the fire extinguishing system pipeline is maintained at the scope of predetermineeing, thereby reduce the pressure change because of the hull drafts the water and causes, reduce the risk that pipeline and equipment damaged, FPSO fire extinguishing system's stability and security have been increased.
The embodiment of the invention also provides a speed regulation method of the FPSO fire-fighting system, as shown in figure 2, the speed regulation method adopts the fire-fighting system, and the speed regulation method comprises the following steps:
s100: the speed regulating device detects the pressure of a liquid outlet of the main fire pump 1, generates a corresponding control signal according to the pressure of the liquid outlet and sends the control signal to the fire engine 4;
s200: the fire engine 4 receives the control signal and changes the rotation speed of the main fire pump 1 and the fire lift pump 10 according to the control signal to make the pressure of the liquid outlet of the main fire pump 1 in a preset range.
As a preferred embodiment, the speed regulation device includes a pressure sensor 2 and a controller 3; the pressure sensor 2 is disposed at the liquid outlet of the main fire pump 1, and the controller 3 is electrically connected to the pressure sensor 2 and the fire engine 4, as shown in fig. 3, the step S100 may include the following steps:
s110: the pressure sensor 2 detects the pressure of a liquid outlet of the main fire pump 1, generates a detection signal and sends the detection signal to the controller 3;
s120: the controller 3 receives the detection signal, generates a corresponding control signal according to the detection signal and sends the control signal to the fire engine 4;
as a preferred embodiment, the fire fighting system further comprises a hydraulic lifting device, the hydraulic lifting device comprises a hydraulic pump 5 and a hydraulic motor 7, the hydraulic pump 5 is connected with the fire engine 4, the hydraulic motor 7 is connected with the hydraulic pump 5 through a control loop, and the fire lift pump 10 is connected with the hydraulic pump 5; then, as shown in fig. 3, step S200 may include the following steps:
s210: the fire engine 4 receives the control signal and changes the rotating speed of the main fire pump 1 and the rotating speed of the hydraulic pump 5 according to the control signal;
s220: the hydraulic pump 5 regulates the rotational speed of the hydraulic motor 7, and the hydraulic motor 7 regulates the rotational speed of the fire lift pump 10.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.
Claims (10)
1. A fire fighting system of an FPSO (floating production storage and offloading) is characterized by comprising a main fire fighting pump, a fire fighting lift pump, a fire fighting engine and a speed regulating device, wherein the fire fighting lift pump is connected with the main fire fighting pump, and the fire fighting engine is connected with the main fire fighting pump and the fire fighting lift pump;
the speed regulating device is connected with the fire engine and used for detecting the pressure of the liquid outlet of the main fire pump and regulating the rotating speed of the fire engine according to the pressure of the liquid outlet so as to change the rotating speed of the main fire pump and the fire lift pump to enable the pressure of the liquid outlet of the main fire pump to be within a preset range.
2. A fire fighting system for an FPSO as claimed in claim 1 wherein the governor device includes a pressure sensor and a controller; the pressure sensor is arranged at the liquid outlet of the main fire pump, the controller is electrically connected with the pressure sensor and the fire engine, and the controller is used for receiving the detection signal of the pressure sensor and generating a corresponding control signal according to the detection signal to adjust the rotating speed of the fire engine so as to change the rotating speed of the main fire pump and the fire lift pump to enable the pressure of the liquid outlet of the main fire pump to be within a preset range.
3. A fire fighting system for an FPSO as claimed in claim 1 wherein the fire fighting system further comprises a hydraulic lifting device connected to the fire engine and the fire lift pump for driving the fire lift pump in operation.
4. A fire fighting system for an FPSO as claimed in claim 3 wherein the hydraulic lift means includes a hydraulic pump connected to the fire engine and a hydraulic motor connected to the hydraulic pump through a control circuit, the fire lift pump being connected to the hydraulic pump.
5. A fire fighting system for an FPSO according to claim 4 wherein, in the direction of fluid flow, an oil tank, said hydraulic pump, an oil supply pipe, said hydraulic motor and an oil return pipe are provided in said control circuit in that order; wherein, return oil pipe with the oil tank intercommunication.
6. A fire fighting system for an FPSO as claimed in claim 1 further comprising a sub-sea door, the inlet of the fire lift pump being connected to the sub-sea door, the outlet of the fire lift pump being connected to the inlet of the main fire pump.
7. A fire fighting system for an FPSO as claimed in claim 1 wherein the fire fighting system further comprises a fire loop, the outlet of the main fire pump being connected to the fire loop.
8. A fire fighting system governor of an FPSO, wherein the governor is applied to the fire fighting system as defined in any one of claims 1 to 7;
the speed regulating device comprises a pressure sensor and a controller; the pressure sensor is arranged at the liquid outlet of the main fire pump, the controller is electrically connected with the pressure sensor and the fire engine, and the controller is used for receiving the detection signal of the pressure sensor and generating a corresponding control signal according to the detection signal to adjust the rotating speed of the fire engine so as to change the rotating speed of the main fire pump and the fire lift pump to enable the pressure of the liquid outlet of the main fire pump to be within a preset range.
9. A method of governing a fire protection system of an FPSO, the method employing a fire protection system as claimed in any one of claims 1 to 7, the method comprising:
the speed regulating device detects the pressure of a liquid outlet of the main fire pump, generates a corresponding control signal according to the pressure of the liquid outlet and sends the control signal to the fire engine;
and the fire engine receives the control signal and changes the rotating speed of the main fire pump and the fire-fighting lift pump according to the control signal so as to enable the pressure of the liquid outlet of the main fire pump to be in a preset range.
10. The method of governing speed of a fire protection system of an FPSO as recited in claim 9, wherein the governor device comprises a pressure sensor and a controller; the pressure sensor is arranged at the liquid outlet of the main fire pump, the controller is electrically connected with the pressure sensor and the fire engine,
speed adjusting device detects main fire pump's liquid outlet pressure to according to liquid outlet pressure generates corresponding control signal and sends to fire engine includes:
the pressure sensor detects the pressure of a liquid outlet of the main fire pump, generates a detection signal and sends the detection signal to the controller;
the controller receives the detection signal, generates a corresponding control signal according to the detection signal and sends the control signal to the fire engine;
the fire fighting system further comprises a hydraulic lifting device, the hydraulic lifting device comprises a hydraulic pump and a hydraulic motor, the hydraulic pump is connected with the fire engine, the hydraulic motor is connected with the hydraulic pump through a control loop, and the fire fighting lifting pump is connected with the hydraulic pump; then the process of the first step is carried out,
the fire engine receives the control signal, and changes the rotation speed of the main fire pump and the fire lift pump according to the control signal to enable the pressure of the liquid outlet of the main fire pump to be in a preset range, and the fire engine comprises:
the fire engine receives the control signal and changes the rotating speeds of the main fire pump and the hydraulic pump according to the control signal;
the hydraulic pump regulates a rotational speed of the hydraulic motor, and the hydraulic motor regulates a rotational speed of the fire lift pump.
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| CN202011321159.5A CN112426650A (en) | 2020-11-23 | 2020-11-23 | Fire fighting system, speed regulating device and speed regulating method of FPSO |
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Application publication date: 20210302 |