CN102425518A - Marine diesel injector cooling unit - Google Patents
Marine diesel injector cooling unit Download PDFInfo
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- CN102425518A CN102425518A CN2011103712216A CN201110371221A CN102425518A CN 102425518 A CN102425518 A CN 102425518A CN 2011103712216 A CN2011103712216 A CN 2011103712216A CN 201110371221 A CN201110371221 A CN 201110371221A CN 102425518 A CN102425518 A CN 102425518A
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- fuel tank
- cooling unit
- oil
- diesel engine
- marine diesel
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Abstract
The invention discloses a marine diesel injector cooling unit. The cooling unit comprises an oil tank, a steam heating device, an oil outlet pipeline and an oil return pipeline, wherein the oil tank is used for storing a cooling medium, the steam heating device is arranged on the oil tank, and the oil tank is respectively communicated with the oil outlet pipeline and the oil return pipeline; the oil outlet pipeline is provided with an oil pump, and the oil return port of the oil return pipeline is positioned on the top of the oil tank; and the steam heating device comprises a steam runner pipe used for circulating steam, and the steam runner pipe is provided with an electromagnetic valve used for controlling the steam flow. The marine diesel injector cooling unit provided by the invention has the advantages of ensuring a marine diesel to normally use heavy oil, controlling the cooling temperature of an injector and prolonging the service life of the injector, and avoiding the pollution to working substance.
Description
Technical field
The present invention relates to a kind of diesel injector cooling unit; Concrete is a kind of cooling unit that is used for marine diesel engine fuel injector; This marine diesel engine fuel injector cooling unit can be guaranteed normally heavy oil combustion of marine diesel engine; Prolong the working life of oil sprayer, and avoid polluting working medium.
Background technique
Existing large-power marine diesel engines is used kinematical viscosity≤380mm under 50 ℃ temperature usually for reducing operating cost
2The heavy oil of/s acts as a fuel, and heavy oil characteristics at normal temperatures is that molecular weight is big, viscosity is high, flowability is poor, just must heat heavy oil through heating plant for guaranteeing flowability.Heavy oil raises rapidly through oil transfer pump pressure after Injection Pump compression pressurization, can reach more than the 30MPa, and get into oil sprayer, backs down oil-fuel injector needle-valve through the heavy oil that pressurizes, and gets into the cylinder combustion acting through oil sprayer spray orifice atomizing back.For guaranteeing normal combustion, the kinematical viscosity of heavy oil entering oil sprayer is generally 9～13 mm usually
2/ s, according to using burning heavy oil diesel engine experience, kinematical viscosity is 380mm under 50 ℃ of temperature to burn
2The heavy oil of/s is example, and the heating of heavy oil must guarantee between 135～150 ℃.
If oil sprayer is worked under 135～150 ℃ temperature for a long time; Oil sprayer can cause its inner accurate mated pair stuck because temperature is too high; Cause oil sprayer can't normally open injected fuel; Make the diesel engine can't proper functioning, this be breakneck concerning the boats and ships of normal navigation.So most of marine diesel engine is through offering the cooling duct on cylinder head, cooling medium gets into the oil sprayer cooling chamber to cooling off around the oil sprayer idol part, and the cooling medium of traditional marine diesel engine is generally the machine oil of diesel engine itself.
There is following problem and shortage in this kind cooling means:
1, adopt the machine oil of diesel engine itself to cool off and can pollute cooling medium, diesel engine lubricating oil often receives the powder of parts wear, the carbon distribution of heavy oil combustion generation and the pollution of ash content, cooling effect variation.
2, through overtesting, the optimum temperature of fuel injector nozzle cooling should be about 80 ℃, but as far as marine diesel engine, 80 ℃ oil temperature has surpassed alarm temperature, and diesel engine is different according to its temperature of difference of applying working condition, so the difficult control of temperature.
3, processing cooling duct on cylinder head; Sealing, processing technology for cylinder cap have all proposed very high requirement, and the processing duct can influence the mechanical strength of cylinder cap, and poor sealing can cause the machine oil excessive oil consumption; Drain to that burning can produce carbon distribution in the cylinder, influence the proper functioning of diesel engine.
Therefore; The present invention is intended to explore a kind of cooling unit that is used for marine diesel engine fuel injector; This cooling unit can effectively be controlled the temperature of oil sprayer, prolongs the working life of oil sprayer, and can also avoid the conventional diesel engine cooling system to pollute the defective of working medium.
Summary of the invention
The technical problem that the present invention will solve is to propose a kind of marine diesel engine fuel injector cooling unit; Through being set, this marine diesel engine fuel injector cooling unit can guarantee normally heavy oil combustion of marine diesel engine; The chilling temperature of control oil sprayer also prolongs working life of oil sprayer, can also avoid polluting working medium.
Realize above-mentioned technical purpose; Marine diesel engine fuel injector cooling unit of the present invention; Comprise the fuel tank that is used to deposit cooling medium, flowline and the oil returning tube that is installed in the steam heater on the fuel tank and communicates with said fuel tank respectively; Said flowline is provided with oil pump; The return opening of said oil returning tube is positioned at the top of said fuel tank, and said steam heater comprises the vapor stream siphunculus that is used for the steam circulation, and said vapor stream siphunculus is provided with the solenoid valve that is used to control steam flow.
Further, the vapor stream siphunculus that is positioned at said fuel tank is shape in the shape of a spiral, and said fuel tank top also is provided with repairing mouth and ventilating hole;
Further, also comprise the relief valve that is set up in parallel with said oil pump, said relief valve one end communicates with said fuel tank, and an end links to each other with said flowline;
Further, be provided with one-way valve I between the outlet of the tie point of said relief valve and said flowline and said oil pump;
Further; Also comprise emergency bearing oil pump, said emergency bearing oil pump and said oil pump are set up in parallel, and promptly emergency bearing oil pump one end communicates with said fuel tank; The other end links to each other with said flowline, is provided with one-way valve II between the tie point of said emergency bearing oil pump and said flowline and the outlet of said emergency bearing oil pump;
Further; Also comprise electric control box; Controller in the said electric control box is electrically connected with said solenoid valve, oil pump and emergency bearing oil pump respectively, also is provided with the digital display temperature controller in the said electric control box, and the said digital display temperature controller temperature transducer interior with being arranged on fuel tank is electrically connected;
Further, also be provided with filter on the said flowline;
Further, the bottom of said fuel tank is provided with sewage draining exit;
Further, also be provided with the level meter that is used to observe oil mass in the fuel tank on the said fuel tank;
Further, said cooling medium is machine oil or diesel oil or water.
Beneficial effect of the present invention is:
1, marine diesel engine fuel injector cooling unit of the present invention is through being provided with fuel tank, flowline and oil returning tube; Under the effect of oil pump; Cooling medium is delivered to by flowline needs the diesel injector of cooling to cool off; Abandoned the mode that the conventional diesel engine oil sprayer adopts the machine oil of diesel engine self to cool off; Pass back into fuel tank through the cooling medium of diesel injector via oil returning tube, degree of purity that can not only the fidelity cooling medium, and can not pollute the machine oil of diesel engine itself; Through steam heater being set and on the vapor stream siphunculus, solenoid valve being set; The electromagnetic valve steam flow; Can the cooling medium in the fuel tank be heated to suitable temperature; The operating temperature that guarantees diesel injector not only makes diesel injector be in the optimal working state, and can prolong the working life of diesel injector about 80 ℃; Because the operating temperature of diesel injector is about 80 ℃, the cooling of cooling medium does not need to be provided with separately cooler again, only leans on the heat loss through radiation of self just can be cooled to suitable temperature range.
Description of drawings
Fig. 1 is marine diesel engine fuel injector cooling unit embodiment's of the present invention structural representation;
Fig. 2 is the right elevation of Fig. 1;
Fig. 3 is the plan view of Fig. 1;
Fig. 4 is the marine diesel engine fuel injector cooling unit system diagram of present embodiment;
Fig. 5 is the marine diesel engine fuel injector cooling unit circuit diagram of present embodiment;
Fig. 6 is the marine diesel engine fuel injector cooling unit control principle figure of present embodiment.
Description of reference numerals:
The 1-fuel tank; The 2-flowline; The 3-oil returning tube; The 4-oil pump; 5-vapor stream siphunculus; The 6-solenoid valve; 7-repairing mouth; The 8-ventilating hole; The 9-relief valve; 10-one-way valve I; The 11-emergency bearing oil pump; 12-one-way valve II; The 13-electric control box; The 14-filter; The 15-sewage draining exit; The 16-level meter; The 17-temperature transducer.
Embodiment
Elaborate below in conjunction with the accompanying drawing specific embodiments of the invention.
As shown in Figure 1, be marine diesel engine fuel injector cooling unit embodiment's of the present invention structural representation; Fig. 2 is the right elevation of Fig. 1; Fig. 3 is the plan view of Fig. 1; Fig. 4 is the marine diesel engine fuel injector cooling unit system diagram of present embodiment; Fig. 5 is the marine diesel engine fuel injector cooling unit circuit diagram of present embodiment; Fig. 6 is the marine diesel engine fuel injector cooling unit control principle figure of present embodiment.
The marine diesel engine fuel injector cooling unit of present embodiment; Comprise the fuel tank 1 that is used to deposit cooling medium, flowline 2 and the oil returning tube 3 that is installed in the steam heater on the fuel tank 1 and communicates with said fuel tank 1 respectively; Said flowline 2 is provided with oil pump 4; The return opening of said oil returning tube 3 is positioned at the top of said fuel tank 1, and said steam heater comprises the vapor stream siphunculus 5 that is used for the steam circulation, and said vapor stream siphunculus 5 is provided with the solenoid valve 6 that is used to control steam flow.Preferably; The vapor stream siphunculus 5 that is positioned at said fuel tank 1 is shape in the shape of a spiral, can effectively increase the efficiency of heating surface of steam heater to cooling medium, and said fuel tank 1 top also is provided with repairing mouth 7 and ventilating hole 8; Through being set, repairing mouth 7 is used in fuel tank 1, replenishing cooling medium; Through ventilating hole 8 is set fuel tank 1 is communicated with air, prevent the air compression on fuel tank 1 top or produce negative pressure, make that the pressure in the fuel tank 1 keeps relative stability.
The marine diesel engine fuel injector cooling unit of present embodiment is through being provided with fuel tank 1, flowline 2 and oil returning tube 3; Under the effect of oil pump 4; Cooling medium is delivered to by flowline 2 needs the diesel injector of cooling to cool off; Abandoned the mode that the conventional diesel engine oil sprayer adopts the machine oil of diesel engine self to cool off; Pass back into fuel tank 1 through the cooling medium of diesel injector via oil returning tube 3, degree of purity that can not only the fidelity cooling medium, and can not pollute the machine oil of diesel engine itself; Through steam heater being set and solenoid valve 6 being set on vapor stream siphunculus 5; Aperture control steam flow through control electromagnetic valve 6; Can the cooling medium in the fuel tank be heated to suitable temperature; The operating temperature that guarantees diesel injector not only makes diesel injector be in the optimal working state, and can prolong the working life of diesel injector about 80 ℃; Because the operating temperature of diesel injector is about 80 ℃, the cooling of cooling medium does not need to be provided with separately cooler again, only leans on the heat loss through radiation of self just can be cooled to suitable temperature range.
Further improvement as present embodiment; Also be provided with the relief valve 9 that is set up in parallel with said oil pump 4 on the fuel tank 1, said relief valve 9 one ends communicate with said fuel tank 1, and an end links to each other with said flowline 2; Through relief valve 9 is set, can make that the oil pump outlet pressure is constant.Preferably; Be provided with one-way valve I 10 between the tie point of said relief valve 9 and said flowline 2 and the outlet of said oil pump 4; Through one-way valve I 10 is set; One-way valve I 10 opens after oil pump 4 outlet pressures reach relief valve 9 inlet pressures, further guarantees the constant flow of oil pump 4 outlet pressures and flowline 2.
Further improvement as present embodiment; Also be provided with emergency bearing oil pump 11 on the fuel tank 1, said emergency bearing oil pump 11 is set up in parallel with said oil pump 4, and promptly emergency bearing oil pump 11 1 ends communicate with said fuel tank 1; The other end links to each other with said flowline 2; Be provided with one-way valve II 12 between the tie point of said emergency bearing oil pump 11 and said flowline 2 and 11 outlets of this emergency bearing oil pump, through emergency bearing oil pump 11 being set, the stability of effectively raising system operation; Through one-way valve II 12 is set, make the outlet pressure and the constant flow of emergency bearing oil pump 11.
Further improvement as present embodiment; Also comprise electric control box 13; Controller in the said electric control box 13 is electrically connected with said solenoid valve 6, oil pump 4 and emergency bearing oil pump 11 respectively, and electric control box 13 is provided with the work indicator light of steam heater, oil pump 4 and emergency bearing oil pump 11, and the switching push button of oil pump 4 and emergency bearing oil pump 11; Can simplify the operation through electric control box 13 is set, make that the marine diesel engine fuel injector cooling unit of present embodiment is more convenient to operate.Also be provided with the digital display temperature controller in the said electric control box 13, the said digital display temperature controller temperature transducer 17 interior with being arranged on fuel tank is electrically connected, and temperature transducer 17 arrives electric control box 13 with the temperature transfer of cooling medium in the fuel tank that measures; And by temperature digital display controller demonstration real time temperature; Be convenient to operator's monitoring, simultaneously, controller is according to the signal of temperature transducer 17; The switching degree of control electromagnetic valve 6; If the temperature of cooling medium surpasses setting value, suitably turn down solenoid valve 6 apertures, if the temperature of cooling medium is lower than setting value; Suitably open the aperture of big solenoid valve 6, satisfy the cooling requirement of marine diesel engine fuel injector to realize the coolant temperature in the fuel tank.
As the further improvement of present embodiment, also be provided with filter 14 on the said flowline 2, through being set, filter 14 can effectively filter out the impurity in the cooling medium, prevent impurity gets into influences oil sprayer in the diesel injector work.Preferably, the bottom of said fuel tank 1 is provided with sewage draining exit 15, through be provided with sewage draining exit 15 can be effectively with the Impurity removal of fuel tank 1 bottom precipitation, and be convenient to change the cooling medium in the fuel tank 1.The two ends of filter 14 are provided with the pressure that pressure gauge is used to observe cooling medium in the flowline 2.
Further improvement as present embodiment; Also be provided with the level meter 16 that is used to observe oil mass in the fuel tank 1 on the said fuel tank 1; Through level meter 16 is set, can monitor the storage of the cooling medium in the fuel tank 1 easily, alert is added cooling medium when cooling medium is not enough.
As the further improvement of present embodiment, said cooling medium is machine oil or diesel oil or water, all can realize the cooling work to diesel injector.
The marine diesel engine fuel injector cooling unit of present embodiment has taken into full account the structural relation of each component; Profile is reasonable, system is simple, compact structure; Make that diesel engine advantage aspect heavy oil combustion is more obvious, prolong the working life of oil sprayer, reduce the specific oil consumption of diesel engine.Oil pump 4, emergency bearing oil pump 11, fuel tank, electric control box, filter cleaner and each pipeline all adopt the integration design, and a playscript with stage directions embodiment marine diesel engine fuel injector cooling unit can satisfy 3 heavy oil engines simultaneously to be used simultaneously.
Explanation is at last; Above embodiment is only unrestricted in order to technological scheme of the present invention to be described; Although with reference to preferred embodiment the present invention is specified, those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement technological scheme of the present invention; And not breaking away from the aim and the scope of technological scheme of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (10)
1. marine diesel engine fuel injector cooling unit; It is characterized in that: comprise the fuel tank that is used to deposit cooling medium, flowline and the oil returning tube that is installed in the steam heater on the fuel tank and communicates with said fuel tank respectively; Said flowline is provided with oil pump; The return opening of said oil returning tube is positioned at the top of said fuel tank, and said steam heater comprises the vapor stream siphunculus that is used for the steam circulation, and said vapor stream siphunculus is provided with the solenoid valve that is used to control steam flow.
2. marine diesel engine fuel injector cooling unit according to claim 1 is characterized in that: the vapor stream siphunculus that is positioned at said fuel tank is shape in the shape of a spiral, and said fuel tank top also is provided with repairing mouth and ventilating hole.
3. marine diesel engine fuel injector cooling unit according to claim 1 is characterized in that: also comprise the relief valve that is set up in parallel with said oil pump, said relief valve one end communicates with said fuel tank, and an end links to each other with said flowline.
4. marine diesel engine fuel injector cooling unit according to claim 3 is characterized in that: be provided with one-way valve I between the tie point of said relief valve and said flowline and the outlet of said oil pump.
5. marine diesel engine fuel injector cooling unit according to claim 3; It is characterized in that: also comprise emergency bearing oil pump; Said emergency bearing oil pump and said oil pump are set up in parallel; Be that emergency bearing oil pump one end communicates with said fuel tank, the other end links to each other with said flowline, is provided with one-way valve II between the tie point of said emergency bearing oil pump and said flowline and the outlet of said emergency bearing oil pump.
6. marine diesel engine fuel injector cooling unit according to claim 5; It is characterized in that: also comprise electric control box; Controller in the said electric control box is electrically connected with said solenoid valve, oil pump and emergency bearing oil pump respectively; Also be provided with the digital display temperature controller in the said electric control box, the said digital display temperature controller temperature transducer interior with being arranged on fuel tank is electrically connected.
7. marine diesel engine fuel injector cooling unit according to claim 1 is characterized in that: also be provided with filter on the said flowline.
8. marine diesel engine fuel injector cooling unit according to claim 1 is characterized in that: the bottom of said fuel tank is provided with sewage draining exit.
9. marine diesel engine fuel injector cooling unit according to claim 1 is characterized in that: also be provided with the level meter that is used to observe oil mass in the fuel tank on the said fuel tank.
10. marine diesel engine fuel injector cooling unit according to claim 1 is characterized in that: said cooling medium is machine oil or diesel oil or water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103712216A CN102425518A (en) | 2011-11-21 | 2011-11-21 | Marine diesel injector cooling unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103712216A CN102425518A (en) | 2011-11-21 | 2011-11-21 | Marine diesel injector cooling unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102425518A true CN102425518A (en) | 2012-04-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103712216A Pending CN102425518A (en) | 2011-11-21 | 2011-11-21 | Marine diesel injector cooling unit |
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| CN (1) | CN102425518A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104331018A (en) * | 2014-11-24 | 2015-02-04 | 永济新时速电机电器有限责任公司 | Button-start control device for diesel engine set of 5000m3/h cutter suction dredger |
| CN114962101A (en) * | 2022-04-20 | 2022-08-30 | 安庆船用电器有限责任公司 | Cooling water device of marine oil sprayer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07332194A (en) * | 1994-06-02 | 1995-12-22 | Nissan Motor Co Ltd | Fuel injection valve cooling device of gas engine |
| JPH11241657A (en) * | 1998-02-26 | 1999-09-07 | Gureitochiren:Kk | Fuel temperature optimal control injection combustion method in heat engine |
| CN201212741Y (en) * | 2008-05-13 | 2009-03-25 | 宁波大发化纤有限公司 | Life hot water automatically supplying device |
| CN201297872Y (en) * | 2007-12-28 | 2009-08-26 | 华泰(天津)集装箱服务有限公司 | Tank-type container temperature-controlled fluid medium heating device |
| CN201351555Y (en) * | 2009-01-22 | 2009-11-25 | 广州柴油机厂 | Cooling unit of diesel fuel injector |
-
2011
- 2011-11-21 CN CN2011103712216A patent/CN102425518A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07332194A (en) * | 1994-06-02 | 1995-12-22 | Nissan Motor Co Ltd | Fuel injection valve cooling device of gas engine |
| JPH11241657A (en) * | 1998-02-26 | 1999-09-07 | Gureitochiren:Kk | Fuel temperature optimal control injection combustion method in heat engine |
| CN201297872Y (en) * | 2007-12-28 | 2009-08-26 | 华泰(天津)集装箱服务有限公司 | Tank-type container temperature-controlled fluid medium heating device |
| CN201212741Y (en) * | 2008-05-13 | 2009-03-25 | 宁波大发化纤有限公司 | Life hot water automatically supplying device |
| CN201351555Y (en) * | 2009-01-22 | 2009-11-25 | 广州柴油机厂 | Cooling unit of diesel fuel injector |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104331018A (en) * | 2014-11-24 | 2015-02-04 | 永济新时速电机电器有限责任公司 | Button-start control device for diesel engine set of 5000m3/h cutter suction dredger |
| CN114962101A (en) * | 2022-04-20 | 2022-08-30 | 安庆船用电器有限责任公司 | Cooling water device of marine oil sprayer |
| CN114962101B (en) * | 2022-04-20 | 2023-12-29 | 安庆船用电器有限责任公司 | Cooling water device of marine fuel injector |
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Application publication date: 20120425 |