CN113586277A - Shipboard host power limiting system and method - Google Patents
Shipboard host power limiting system and method Download PDFInfo
- Publication number
- CN113586277A CN113586277A CN202110822563.9A CN202110822563A CN113586277A CN 113586277 A CN113586277 A CN 113586277A CN 202110822563 A CN202110822563 A CN 202110822563A CN 113586277 A CN113586277 A CN 113586277A
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- China
- Prior art keywords
- host
- shaft power
- power
- shaft
- limiting
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D45/00—Electrical control not provided for in groups F02D41/00 - F02D43/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/08—Safety, indicating or supervising devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/08—Safety, indicating or supervising devices
- F02B77/085—Safety, indicating or supervising devices with sensors measuring combustion processes, e.g. knocking, pressure, ionization, combustion flame
Abstract
The invention discloses a power limiting system and method for a host computer on a ship, wherein the system comprises a shaft power monitoring system and a host computer control system; the shaft power monitoring system is used for collecting data used for calculating the shaft power of the host computer, converting the data into the shaft power of the host computer and transmitting the shaft power of the host computer to the host computer control system; the host control system is used for judging whether the value of the host shaft power meets a preset condition or not, and if so, the host control system sends a control instruction which is used for limiting the improvement of the host shaft power. The invention realizes the restriction of the SMCR of the host after leaving the factory, further can optimize and select the oil consumption of the host on the ship, effectively reduces the EEDI index, reduces the emission of carbon dioxide and reduces the air pollution.
Description
Technical Field
The invention relates to a power limiting system and method for a host computer on a ship.
Background
The high-power low-speed host is designed and manufactured according to series, each series is provided with an MCR (maximum continuous power), a certain power range is covered downwards under the MCR, a user can select any point in the range as a required SMCR (actually adopted maximum continuous power), in the prior art, after the host leaves a factory, the user cannot limit the SMCR of the host, so that the user cannot optimally select the oil consumption of the host, the Energy efficiency Design Index of an Energy efficient Design Index of a ship can be improved, the Energy consumed by the ship is converted into the Index of the discharge capacity of CO2, the effective Energy of the ship is converted into the Index of the discharge capacity of CO2, the carbon dioxide discharge amount is increased, and air pollution is avoided.
Disclosure of Invention
The invention aims to overcome the defects that in the prior art, after the host leaves a factory, the SMCR of the host cannot be limited, the oil consumption of the host is not favorably optimized, the EEDI index is improved, the emission of carbon dioxide is increased, and air is polluted. The invention provides a power limiting system and method for a host computer on a ship.
The invention solves the technical problems through the following technical scheme:
the invention provides a power limiting system for a host computer on a ship, which comprises a shaft power monitoring system and a host computer control system;
the shaft power monitoring system is used for collecting data used for calculating the shaft power of the host computer, converting the data into the shaft power of the host computer and transmitting the shaft power of the host computer to the host computer control system;
the host control system is used for judging whether the value of the host shaft power meets a preset condition or not, and if so, the host control system sends a control instruction which is used for limiting the improvement of the host shaft power.
Preferably, the shaft power monitoring system comprises a shaft power monitoring patch mounted on the propulsion system shaft for collecting data used to calculate the host shaft power.
Preferably, the shaft power monitoring sheet is a resistance strain gauge.
Preferably, the host control system is further configured to call the shaft power monitoring system again when it is determined that the preset condition is not met.
Preferably, the preset condition is that 110% ﹡ A-B < K, A represents an SMCR, B represents a value of the main engine shaft power, and K is a set threshold.
The invention provides a method for limiting the power of a host computer on a ship, which comprises the following steps:
collecting data used for calculating the shaft power of a host and converting the data into shaft power;
and judging whether the value of the shaft power of the host meets a preset condition or not, and if so, sending a control instruction, wherein the control instruction is used for limiting the improvement of the shaft power of the host.
Preferably, the step of collecting data used to calculate the power of the main machine shaft comprises:
data used to calculate the host shaft power is collected by a shaft power monitoring blade mounted on the propulsion system shaft.
Preferably, the shaft power monitoring sheet is a resistance strain gauge.
Preferably, the on-board host power limiting method further comprises:
and returning the collected data used for calculating the shaft power of the host machine and converting the data into the shaft power of the host machine if the value of the shaft power of the host machine is judged not to meet the preset condition.
Preferably, the preset condition is that 110% ﹡ A-B is less than K, A represents an SMCR, B represents a value of the main engine shaft power, and K is a set threshold.
The above preferred conditions can be combined arbitrarily, namely the preferred embodiments of the invention, on the basis of the common knowledge in the field.
The positive progress effects of the invention are as follows: according to the invention, the shaft power monitoring sheet is arranged to collect data for calculating the shaft power and transmit the data to the shaft power monitoring system, the shaft power monitoring system converts the collected data for calculating the shaft power into the shaft power, the host control system judges whether the value of the shaft power meets the preset condition, if yes, the host control system sends an instruction for limiting the further increase of the host shaft power, the limitation of the host SMCR after leaving the factory is realized, further, the oil consumption of the host on the ship can be optimally selected, the EEDI index is effectively reduced, the emission of carbon dioxide is reduced, and the effect of air pollution is reduced.
Drawings
Fig. 1 is a block diagram showing a power limiting system of a host computer on a ship according to embodiment 1 of the present invention.
Fig. 2 is a flow chart of a method of power limiting a host computer onboard a ship in embodiment 2 of the present invention.
Detailed Description
The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.
Example 1
The present embodiment provides a power limiting system for a host computer on a ship, as shown in fig. 1, which is a schematic frame diagram of the power limiting system for the host computer on the ship, the power limiting system for the host computer on the ship comprises a shaft power monitoring system 1 and a host computer control system 2, the shaft power monitoring system 1 is used for collecting data used for calculating the shaft power of the host computer, converting the data into the shaft power of the host computer, and transmitting the shaft power of the host computer to the host computer control system 2.
The shaft power monitoring system 1 collects data for calculating the shaft power of the host and converts the data into the shaft power of the host by the prior art, and this embodiment describes one of the methods for calculating the shaft power of the host. The main engine shaft power is one of the most important performance parameters of the marine main engine, and is generally obtained by calculating through indirectly measuring torque and rotating speed, the calculation formula of the main engine shaft power is P ﹦ T ﹡ n/9550, where P is the main engine shaft power, T represents the measured torque of the propulsion system shaft 5, n represents the measured rotating speed of the propulsion system shaft 5, the shaft power monitoring sheet 3 is used for collecting the torque T and the rotating speed n, the specific torque T can be obtained through a torque measuring device, and the rotating speed n can be obtained through a rotating speed measuring device, for example: an eddy current sensor. Specifically, other methods known in the art may be used to obtain data for calculating the power of the main engine shaft, and then the data is converted into the power of the main engine shaft by the shaft power monitoring system 1.
The host control system 2 is used for judging whether the value of the host shaft power meets a preset condition, if so, the host control system 2 sends a control instruction, and the control instruction is used for limiting the increase of the host shaft power.
The control instruction acts on the main engine 4, monitors and calculates a plurality of parameters of the main engine 4 to give the fuel injection quantity, so as to control the shaft power of the main engine.
The shaft power monitoring system 1 comprises a shaft power monitoring piece 3 arranged on a shaft 5 of the propulsion system, and the shaft power monitoring piece 3 is used for collecting data used for calculating the shaft power of a main engine.
The shaft power monitoring sheet 3 is preferably a resistance strain gauge, and is not limited herein.
The host control system 2 is further configured to call the shaft power monitoring system 1 again when it is determined that the preset condition is not met.
The shaft power monitoring system 1 can continuously acquire data used for calculating the shaft power of the host and convert the data into the shaft power of the host, and the host control system 2 continuously judges whether the value of the shaft power of the host meets a preset condition or not.
Specifically, the preset condition may be that 110% ﹡ A-B is less than K, A represents an SMCR, B represents a value of the host shaft power, K is a set threshold, and the specific value of K may be set according to actual needs, which is not limited herein; the host control system 2 judges whether the value obtained by subtracting the host shaft power from the value of the maximum sustained power actually adopted by 110% is smaller than a set threshold value, if so, the host control system 2 sends a control instruction to the host 4 to control the host shaft power to be further improved, and if not, the host control system calls the shaft power monitoring system 1 again to continue monitoring. The embodiment realizes the restriction on the SMCR of the host on the ship after leaving the factory, is convenient for the optimized selection of the oil consumption of the host 4, reduces the EEDI index, reduces the emission of carbon dioxide and protects the air environment.
Example 2
The embodiment also provides a method for limiting the power of the host computer on the ship, as shown in fig. 2, which comprises the following steps:
and S1, collecting data used for calculating the shaft power of the host and converting the data into the shaft power.
And S2, judging whether the value of the main engine shaft power meets the preset condition, if so, executing the step S21, and if not, returning to the step S1.
And S21, sending a control command, wherein the control command is used for limiting the increase of the shaft power of the main machine.
In step S1, data used to calculate the host machine shaft power is collected, specifically, by a shaft power monitoring patch mounted on the propulsion system shaft.
The data for calculating the main shaft power is collected and converted into the main shaft power by the prior art, and this embodiment describes one of the methods for calculating the main shaft power. The main engine shaft power is one of the most important performance parameters of the marine main engine, and is generally obtained by calculating through indirectly measuring torque and rotating speed, the calculation formula of the main engine shaft power is P ﹦ T ﹡ n/9550, where P is the main engine shaft power, T represents the measured torque of the propulsion system shaft 5, n represents the measured rotating speed of the propulsion system shaft 5, the shaft power monitoring sheet 3 is used for collecting the torque T and the rotating speed n, the specific torque T can be obtained through a torque measuring device, and the rotating speed n can be obtained through a rotating speed measuring device, for example: an eddy current sensor. Specifically, other methods in the prior art can be adopted to obtain data for calculating the power of the main engine shaft, and further, the power of the main engine shaft can be obtained through calculation.
In particular, the shaft power monitoring sheet is preferably a resistance strain gauge.
In step S2, specifically, the preset condition may be that 110% ﹡ a-B < K, where a represents SMCR, B represents a value of the host shaft power, K is a set threshold, and a specific value of K may be set according to an actual need, and is not limited herein; and judging whether the value obtained by subtracting the shaft power of the host from the value of the maximum sustained power actually adopted by 110% is smaller than a set threshold value, if so, sending a control instruction to the host to control the shaft power of the host to be further improved, and if not, executing the step S1 again. The embodiment realizes the limitation of the SMCR of the host after leaving the factory, is convenient for the optimal selection of the oil consumption of the host, reduces the EEDI index, reduces the emission of carbon dioxide and protects the air environment.
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 power limiting system for a host computer on a ship is characterized by comprising a shaft power monitoring system and a host computer control system;
the shaft power monitoring system is used for collecting data used for calculating the shaft power of the host computer, converting the data into the shaft power of the host computer and transmitting the shaft power of the host computer to the host computer control system;
the host control system is used for judging whether the value of the host shaft power meets a preset condition or not, and if so, the host control system sends a control instruction which is used for limiting the improvement of the host shaft power.
2. The on-board host power-limiting system of claim 1, wherein the shaft power monitoring system comprises a shaft power monitoring pad mounted on a propulsion system shaft, the shaft power monitoring pad configured to collect data used to calculate host shaft power.
3. The on-board ship host power limiting system of claim 2, wherein the shaft power monitoring tab is a resistive strain gauge.
4. The on-board ship host power-limiting system of claim 3, wherein said host control system is further configured to recall said axle power monitoring system upon determining that a predetermined condition is not met.
5. The on-board ship host power limiting system of any one of claims 1-4, wherein said predetermined condition is 110% ﹡ A-B < K, A representing SMCR, B representing a value of said host shaft power, and K being a set threshold.
6. A method for power limiting a host on a ship, comprising the steps of:
collecting data used for calculating the shaft power of a host and converting the data into shaft power;
and judging whether the value of the shaft power of the host meets a preset condition or not, and if so, sending a control instruction, wherein the control instruction is used for limiting the improvement of the shaft power of the host.
7. The on-board ship host power-limiting method of claim 6, wherein said step of collecting data used to calculate host shaft power comprises:
data used to calculate the host shaft power is collected by a shaft power monitoring blade mounted on the propulsion system shaft.
8. The method of on-board ship host power limiting of claim 7, wherein the shaft power monitoring tab is a resistive strain gauge.
9. The on-board host power-limiting method of claim 6, further comprising:
and returning the collected data used for calculating the shaft power of the host machine and converting the data into the shaft power of the host machine if the value of the shaft power of the host machine is judged not to meet the preset condition.
10. The method of any of claims 6 to 9, wherein said predetermined condition is 110% ﹡ a-B < K, a representing SMCR, B representing a value of said host shaft power, K being a set threshold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110822563.9A CN113586277A (en) | 2021-07-21 | 2021-07-21 | Shipboard host power limiting system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110822563.9A CN113586277A (en) | 2021-07-21 | 2021-07-21 | Shipboard host power limiting system and method |
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| Publication Number | Publication Date |
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| CN113586277A true CN113586277A (en) | 2021-11-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110822563.9A Pending CN113586277A (en) | 2021-07-21 | 2021-07-21 | Shipboard host power limiting system and method |
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Citations (5)
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| US7206687B1 (en) * | 2006-04-06 | 2007-04-17 | General Motors Corporation | Method for controlling a hybrid electric vehicle |
| CN101753096A (en) * | 2009-11-10 | 2010-06-23 | 中国船舶重工集团公司第七一二研究所 | Power limiter and power control method |
| CN103241355A (en) * | 2013-04-26 | 2013-08-14 | 武汉船用机械有限责任公司 | Load protection method and device for controllable-pitch propeller driving diesel |
| CN109356733A (en) * | 2018-12-12 | 2019-02-19 | 三汽车制造有限公司 | Control method, control system and the engineering machinery of dynamical system |
| US20190055901A1 (en) * | 2017-08-21 | 2019-02-21 | Pratt & Whitney Canada Corp. | Method and system for limiting power of an engine |
-
2021
- 2021-07-21 CN CN202110822563.9A patent/CN113586277A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7206687B1 (en) * | 2006-04-06 | 2007-04-17 | General Motors Corporation | Method for controlling a hybrid electric vehicle |
| CN101753096A (en) * | 2009-11-10 | 2010-06-23 | 中国船舶重工集团公司第七一二研究所 | Power limiter and power control method |
| CN103241355A (en) * | 2013-04-26 | 2013-08-14 | 武汉船用机械有限责任公司 | Load protection method and device for controllable-pitch propeller driving diesel |
| US20190055901A1 (en) * | 2017-08-21 | 2019-02-21 | Pratt & Whitney Canada Corp. | Method and system for limiting power of an engine |
| CN109356733A (en) * | 2018-12-12 | 2019-02-19 | 三汽车制造有限公司 | Control method, control system and the engineering machinery of dynamical system |
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