CN104295423A - Fuel pump oil supply method and system - Google Patents
Fuel pump oil supply method and system Download PDFInfo
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- CN104295423A CN104295423A CN201410529773.9A CN201410529773A CN104295423A CN 104295423 A CN104295423 A CN 104295423A CN 201410529773 A CN201410529773 A CN 201410529773A CN 104295423 A CN104295423 A CN 104295423A
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- 239000000446 fuel Substances 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000000694 effects Effects 0.000 abstract description 5
- 239000003921 oil Substances 0.000 description 111
- 230000009466 transformation Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
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Abstract
The invention discloses a fuel pump oil supply method and system. The fuel pump oil supply method includes starting a small fuel pump for supplying oil, and judging whether a large fuel pump is started according to oil pressure of the supplied oil. According to the fuel pump oil supply method and system, manners of use of large fuel pumps for supplying oil in the prior art are changed into use of the small fuel pump, and the standby large fuel pump is started when required oil pressure cannot be met, so that costs can be saved, and ideal energy saving effects can be achieved.
Description
Technical field
The present invention relates to fuel pump fueling technology, particularly, relate to a kind of fuel pump fuel supply method and system.
Background technique
In the past, in thermal power plant's oil-fired system, come into operation oil feed pump of ignition of the boiler runs, and be ensure unit safety operation, after unit ignition, it is for subsequent use as helping fuel oil that oil feed pump maintains charge oil pressure 3.5MPa circular flow.
At present, Demand Design coal can be guaranteed, and boiler burning situation is greatly improved, and therefore boiler auxiliary combustion oil significantly reduces.But it is large, uneconomical that high-power fuel pump (i.e. large oil pump) annual persistent loop runs power consumption.
But current thermal power generation system mainly adopts variable-frequency motor to obtain energy-conservation effect, but this mode is by the limitations affect of multistage pump stalled condition, and energy-saving effect is not obvious.
Summary of the invention
The object of this invention is to provide a kind of fuel pump fuel supply method and system, adopting variable-frequency motor in prior art and the problem causing multistage pump stall for solving.
To achieve these goals, the invention provides a kind of fuel pump fuel supply method, the method comprises: start little oil pump and carry out fuel feeding; And judge whether that connection opens large oil pump according to the oil pressure of described fuel feeding.
Correspondingly, present invention also offers a kind of fuel pump oil supply system, this system comprises: pressure transducer, for detecting the oil pressure of described fuel feeding; And controller, for judging whether that connection opens large oil pump according to described oil pressure, and start little oil pump before this.
Pass through technique scheme, the present invention all adopts the mode of large oil pump feed in prior art by changing, and mainly adopt little oil pump to carry out fuel feeding, restarts large oil pump for subsequent use when not reaching the oil pressure of demand, can not only cost be saved, and the energy-saving effect that can realize ideal.
Other features and advantages of the present invention are described in detail in embodiment part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification, is used from explanation the present invention, but is not construed as limiting the invention with embodiment one below.In the accompanying drawings:
Fig. 1 is the flow chart of fuel pump fuel supply method provided by the invention; And
Fig. 2 is the block diagram of fuel pump oil supply system provided by the invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.Should be understood that, embodiment described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
Fig. 1 is the flow chart of fuel pump fuel supply method provided by the invention, and as shown in Figure 1, the method comprises: start little oil pump and carry out fuel feeding, then judges whether that connection opens large oil pump according to the oil pressure of little oil pump feed.The present invention will adopt the technological scheme of three large oil pumps to be improved to the technological scheme of use little oil pump and two large oil pumps in prior art, and no matter adopt which type of technological scheme, all should ensure the oil pressure of fuel feeding, so need here to judge whether to need connection to open large oil pump according to the oil pressure of little oil pump feed, to ensure the oil pressure of fuel feeding.
Wherein, judge whether that connection opens large oil pump and comprises according to the oil pressure of fuel feeding: when little oil pump feed oil pressure lower than minimum open oil pressure map value, connection open large oil pump.Generally, it is just enough that connection opens a large oil pump, and arranging two large oil pumps is here to prevent the wherein large oil pump from can not normally run because of fault.Wherein the minimum oil pressure map value that opens can be 2.2MPa, can ensure basic atomizing effect like this and be unlikely to make bulk range too little.After connection opens large oil pump, if when the oil pressure of fuel feeding is greater than preset upper limit value, then this large oil pump out of service.Wherein preset upper limit value can be 4MPa, can ensure to be atomized too serious like this.
When connection opens large oil pump, namely start little oil pump and large oil pump simultaneously, if there is the situation of vexed pump operation, then should stop transport little oil pump and large oil pump simultaneously.Vexed pump operation refers to and runs little oil pump and large oil pump simultaneously and occur that in pipeline, oil pressure interacts and causes the abnormal a kind of phenomenon of fuel feeding, so vexed pump operation can be determined by the oil pressure of fuel feeding, such as, the oil pressure of fuel feeding too little (as, be less than 1MPa or close to zero) when, then can think the situation occurring vexed pump operation.When occur vexed pump operation phenomenon and stop transport simultaneously little oil pump and large oil pump, can start little oil pump, determine to stop transport little oil pump and large oil pump can carry out in the following manner: receive large oil pump stoppage in transit signal, the signal being less than 5A by the electric current of little oil pump and little oil pump run in inverted signal arbitrarily the two.
In addition, when little oil pump breaks down stoppage in transit, large oil pump can be started, judge that little oil pump fault can carry out in the following manner: receive little oil pump stoppage in transit signal, the signal being less than 5A by the electric current of little oil pump and little oil pump run in inverted signal arbitrarily the two.Further, before the large oil pump of startup, also need whether the outlet electric valve determining little oil pump is closed condition, if closed condition just can start large oil pump.
Fig. 2 is the block diagram of fuel pump oil supply system provided by the invention, as shown in Figure 2, this system comprises pressure transducer and controller, pressure transducer is for detecting the oil pressure of fuel pump fuel feeding, controller is connected with pressure transducer, oil pressure for detecting according to pressure transducer judges whether that connection opens large oil pump, and starts little oil pump before this.
As shown in Figure 2, this system also comprises six sensors, is respectively the first to the 6th sensor, is all connected with controller.First sensor, for judging whether large oil pump place circuit has electric current, exports large oil pump stoppage in transit signal in the absence of electric current; Second current sensor is for judging whether the electric current of little oil pump place circuit is less than 5A, exports the signal being less than 5A by the electric current of little oil pump when being less than 5A; 3rd current sensor is used for whether little oil pump runs by judging whether have electric current to judge by little oil pump place circuit, when little oil pump does not run, exports little oil pump and runs inverted signal.Wherein, stop transport at the same time little oil pump and large oil pump when, if controller receive large oil pump stoppage in transit signal, the signal being less than 5A by the electric current of little oil pump and little oil pump run in inverted signal arbitrarily the two, then start little oil pump.
In addition, the 4th current sensor is for judging whether described little oil pump place circuit has electric current, exports little oil pump stoppage in transit signal in the absence of electric current; 5th current sensor is for judging whether the electric current of little oil pump place circuit is less than 5A, exports the signal being less than 5A by the electric current of little oil pump when being less than 5A; 6th current sensor is used for whether little oil pump runs by judging whether have electric current to judge by little oil pump place circuit, when little oil pump does not run, exports little oil pump and runs inverted signal.Wherein, if controller receive little oil pump stoppage in transit signal, the signal being less than 5A by the electric current of little oil pump and little oil pump run in inverted signal arbitrarily the two and the outlet electric valve of little oil pump is closed condition, then start large oil pump.
It should be noted that, the detail of fuel pump oil supply system provided by the invention and benefit corresponding with fuel pump fuel supply method provided by the invention, in this, it will not go into details.
The improvement of the present embodiment is mainly to change existing three large oil pumps into a little oil pump and two large oil pumps, and whole system also needs to transform accordingly, specific as follows:
1, high-power 132kw explosion-proof electric machine is transform as 45kw explosion-proof type small motor;
2, wherein 10 grades of pump 80AY50 × 10 (i.e. large oil pump) will transform 12 grades of pump 50AY35 × 12 (i.e. little oil pump) as, holding pump basis platform is constant;
3, carry out local replacing to the import and export pipeline of improved little oil pump, pipe range is about 500mm, and diameter is adjusted to 50mm by 80mm, realizes the displacement of pipeline and the smooth docking of interface by CONCENTRIC REDUCER, elbow;
4,300/5 three mutual inductors are transform as the mutual inductor of 150/5, and change ammeter, increase the thermorelay of 0 ~ 150A, to adapt to the requirement of the little oil pump newly increased, namely current protection is carried out to this little oil pump.
More than only illustrate the transformation of the concerned components in whole system, it will be appreciated by those skilled in the art that and the transformation of the concerned components in system is not limited to this, and in different systems, the transformation of concerned components is not identical yet.In addition, the object of this explanation is only to explain and illustrates, the protection domain be not intended to limit the present invention.
Below the preferred embodiment of the present invention is described in detail by reference to the accompanying drawings; but; the present invention is not limited to the detail in above-mentioned mode of execution; within the scope of technical conceive of the present invention; can carry out multiple simple variant to technological scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each the concrete technical characteristics described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode.In order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible compound mode.
In addition, also can carry out combination in any between various different mode of execution of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (9)
1. a fuel pump fuel supply method, is characterized in that, the method comprises:
Start little oil pump and carry out fuel feeding; And
Judge whether that connection opens large oil pump according to the oil pressure of described fuel feeding.
2. method according to claim 1, is characterized in that, the described oil pressure according to fuel feeding judges whether that connection opens large oil pump and comprises:
When described oil pressure lower than minimum open oil pressure map value, connection open large oil pump.
3. method according to claim 2, is characterized in that, the method also comprises:
When join open large oil pump after and the oil pressure of fuel feeding is greater than preset upper limit value, described large oil pump out of service.
4. method according to claim 1, is characterized in that, the method also comprises:
When connection opens large oil pump, if there is the situation of vexed pump operation, then stop transport little oil pump and large oil pump simultaneously.
5. method according to claim 4, is characterized in that, the method also comprises:
If receive large oil pump stoppage in transit signal, the signal being less than 5A by the electric current of little oil pump and little oil pump run in inverted signal arbitrarily the two, then start little oil pump.
6. method according to claim 1, is characterized in that, the method also comprises:
If receive little oil pump stoppage in transit signal, the signal being less than 5A by the electric current of little oil pump and little oil pump run in inverted signal arbitrarily the two and the outlet electric valve of little oil pump is closed condition, then start large oil pump.
7. a fuel pump oil supply system, is characterized in that, this system comprises:
Pressure transducer, for detecting the oil pressure of described fuel feeding; And
Controller, for judging whether that connection opens large oil pump according to described oil pressure, and starts little oil pump before this.
8. system according to claim 7, is characterized in that, this system also comprises:
First current sensor, for judging whether described large oil pump place circuit has electric current, exports large oil pump stoppage in transit signal in the absence of electric current;
Second current sensor, for judging whether the electric current of described little oil pump place circuit is less than 5A, exports the signal being less than 5A by the electric current of little oil pump when being less than 5A; And
3rd current sensor, for whether little oil pump runs by judging whether have electric current to judge by described little oil pump place circuit, when little oil pump not running, exporting little oil pump and running inverted signal;
Wherein, stop transport at the same time little oil pump and large oil pump when, if described controller receive large oil pump stoppage in transit signal, the signal being less than 5A by the electric current of little oil pump and little oil pump run in inverted signal arbitrarily the two, then start little oil pump.
9. system according to claim 7, is characterized in that, this system also comprises:
4th current sensor, for judging whether described little oil pump place circuit has electric current, exports little oil pump stoppage in transit signal in the absence of electric current;
5th current sensor, for judging whether the electric current of described little oil pump place circuit is less than 5A, exports the signal being less than 5A by the electric current of little oil pump when being less than 5A; And
6th current sensor, for whether little oil pump runs by judging whether have electric current to judge by described little oil pump place circuit, when little oil pump not running, exporting little oil pump and running inverted signal;
Wherein, if described controller receive little oil pump stoppage in transit signal, the signal being less than 5A by the electric current of little oil pump and little oil pump run in inverted signal arbitrarily the two and the outlet electric valve of little oil pump is closed condition, then start large oil pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410529773.9A CN104295423B (en) | 2014-10-10 | 2014-10-10 | Fuel pump oil supply method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410529773.9A CN104295423B (en) | 2014-10-10 | 2014-10-10 | Fuel pump oil supply method and system |
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| Publication Number | Publication Date |
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| CN104295423A true CN104295423A (en) | 2015-01-21 |
| CN104295423B CN104295423B (en) | 2017-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410529773.9A Active CN104295423B (en) | 2014-10-10 | 2014-10-10 | Fuel pump oil supply method and system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114837926A (en) * | 2022-05-06 | 2022-08-02 | 纬湃汽车电子(芜湖)有限公司 | Control method for double fuel pumps |
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|---|---|---|---|---|
| DE10141038A1 (en) * | 2001-08-22 | 2003-03-20 | Ktm Sportmotorcycle Ag Mattigh | Fuel supply system for kick-start motor bike, has low pressure electrical pump for starting and high pressure mechanical pump for running |
| CN102493530A (en) * | 2011-12-06 | 2012-06-13 | 上海成峰流体设备有限公司 | Box-type low-energy-consumption pipe network pressure-overlaying water supply equipment and method |
| CN102635137A (en) * | 2011-02-12 | 2012-08-15 | 上海派芬自动控制技术有限公司 | Total power control system of mechanical equipment |
| CN202947148U (en) * | 2012-11-22 | 2013-05-22 | 大唐桂冠合山发电有限公司 | Oil supply system of oil burning boiler |
| CN203730188U (en) * | 2013-11-30 | 2014-07-23 | 凯迈(洛阳)机电有限公司 | Fuel supply device of engine |
| CN203798425U (en) * | 2014-04-16 | 2014-08-27 | 襄阳达安汽车检测中心 | Automotive Fuel Flow Meter Calibration Device |
-
2014
- 2014-10-10 CN CN201410529773.9A patent/CN104295423B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10141038A1 (en) * | 2001-08-22 | 2003-03-20 | Ktm Sportmotorcycle Ag Mattigh | Fuel supply system for kick-start motor bike, has low pressure electrical pump for starting and high pressure mechanical pump for running |
| CN102635137A (en) * | 2011-02-12 | 2012-08-15 | 上海派芬自动控制技术有限公司 | Total power control system of mechanical equipment |
| CN102493530A (en) * | 2011-12-06 | 2012-06-13 | 上海成峰流体设备有限公司 | Box-type low-energy-consumption pipe network pressure-overlaying water supply equipment and method |
| CN202947148U (en) * | 2012-11-22 | 2013-05-22 | 大唐桂冠合山发电有限公司 | Oil supply system of oil burning boiler |
| CN203730188U (en) * | 2013-11-30 | 2014-07-23 | 凯迈(洛阳)机电有限公司 | Fuel supply device of engine |
| CN203798425U (en) * | 2014-04-16 | 2014-08-27 | 襄阳达安汽车检测中心 | Automotive Fuel Flow Meter Calibration Device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114837926A (en) * | 2022-05-06 | 2022-08-02 | 纬湃汽车电子(芜湖)有限公司 | Control method for double fuel pumps |
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| CN104295423B (en) | 2017-05-03 |
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