CN201351555Y - Cooling unit of diesel fuel injector - Google Patents
Cooling unit of diesel fuel injector Download PDFInfo
- Publication number
- CN201351555Y CN201351555Y CNU200920050710XU CN200920050710U CN201351555Y CN 201351555 Y CN201351555 Y CN 201351555Y CN U200920050710X U CNU200920050710X U CN U200920050710XU CN 200920050710 U CN200920050710 U CN 200920050710U CN 201351555 Y CN201351555 Y CN 201351555Y
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Abstract
The utility model relates to a cooling unit of a diesel fuel injector; the cooling unit is characterized in that: the cooling unit comprises an automatic temperature regulator (2), a cooling device (3) and a pressure oil pump (4); the cooling device (3) is connected with a fuel inlet pipe in parallel, and two parallel connecting points of the cooling device and the fuel inlet pipe form a front parallel-connection branch point (A) and a rear parallel-connection branch point (B), the automatic temperature regulator (2) is arranged on the front parallel-connection branch point (A) and is connected with the inlet of the cooling device (3), the pressure oil pump (4) is arranged behind the rear parallel-connection branch point (B) and is connected with the fuel inlet pipe, the pressure oil pump (4) is also connected with a power driving device and is driven by the power driving device. The cooling unit of the utility model is an independent structure, can ensure normal heavy oil combustion of the diesel and prolong the service life of matching parts of the fuel injector; at the same time, the utility model is an independent cooling unit of the diesel fuel injector so as to avoid from polluting working mediums.
Description
Technical field
The utility model relates to a kind of diesel injector cooling unit, especially a kind ofly can guarantee the normal heavy oil combustion of diesel oil function, prolong the working life of oil sprayer idol part, simultaneously for avoiding polluting the independent oil sprayer cooling unit of working medium (lubricating oil or diesel oil).
Background technique
Behind the diesel engine heavy oil combustion, because the viscosity height of heavy oil, combustion performance is poor, and contain corrosion component sulphur, in combustion process, be easy to generate high temperature, the oil nozzle carbon distribution, stop up, crackle, corrosion etc. for this reason, need to increase the oil sprayer cooling unit, the oil sprayer cooling unit right and wrong that diesel engine at present commonly used is adopted are independent, the medium and the diesel engine that promptly are used for cooling off oil sprayer are shared, to be example with lubricating oil as medium, if oil sprayer is revealed, then contaminated lubricating oil will flow back to oil tank, cause the lubricating oil in the whole system contaminated, finally have to change whole lubricating oil, thereby cause great economic loss.
The model utility content
The purpose of this utility model provides a kind ofly can guarantee the normal heavy oil combustion of diesel oil function, prolongs the working life of oil sprayer idol part, simultaneously for avoiding polluting the independent oil sprayer cooling unit of working medium (lubricating oil or diesel oil).
The purpose of this utility model can realize by following technological scheme: a kind of cooling unit of diesel injector, it is characterized in that: it comprises thermostat, cooler and pump, described cooler is in parallel with oil inlet pipe, fulcrum in parallel and back fulcrum in parallel before two tie point that both are in parallel form, described thermostat is positioned on the described preceding fulcrum in parallel, and link to each other with the inlet of cooler, after described pump is positioned at described back fulcrum in parallel, and link to each other with described oil inlet pipe, pump also is connected with Power Drive Unit, drives by Power Drive Unit.
This cooling unit is an independent structures, before the use, the thermostat inlet is connected to the circulation fuel tank, and delivery side of pump then is connected to oil sprayer, and oil sprayer is connected to the circulation fuel tank again, so forms a circuit oil circuit.Start Power Drive Unit then, working medium (lubricating oil or diesel oil) is then under the effect of the pump that Power Drive Unit drives, enter thermostat from the circulation fuel tank through oil inlet pipe, thermostat itself does not have the function of regulating temperature, it concerns the purpose that reaches the adjusting temperature by the assignment of traffic of regulating lubricating oil between two branch roads, if the temperature of working medium meets the demands, then directly enter pump by oil inlet pipe; If the temperature of working medium is higher, then regulate the flow through cooler cooling of a part of working medium, a part finally reaches the requirement of satisfying serviceability temperature by mixing with the working medium that is cooled behind the oil inlet pipe; If the temperature of working medium is too high, then to be closed be that the by-pass port of thermoregulator is closed fully to a section in parallel with cooler of oil inlet pipe, and working medium all by the cooling vent of the thermoregulator cooler of flowing through, enters pump through supercooling again; Flow into the oil sprayer that is connected with pump then, realize the cooling to oil sprayer, the recycle oil case is flowed back in last working medium circulation.
On the basis of the above, the utility model can be done following improvement: described cooler is the bundled tube cooler, and its two ends connect intake pipe and outlet pipe respectively, is respectively arranged with control valve on described intake pipe and the outlet pipe; Adopt water pipe that fresh water is inserted cooler as cooling medium, and it is arranged to the flow direction opposite with working medium, working medium flows in oil inlet pipe, and fresh water flows outside pipe, because the working medium temperature is higher, and heat transfer takes place between the fresh water; Fresh water can reduce the temperature of cooler and working medium simultaneously, improves the efficient of cooling greatly, and the control valve that is arranged at the water pipe two ends can be controlled cooling medium in extraordinary circumstances.
On the basis of the above, the utility model can be done further improvement: also comprise low pressure relief valve, the two ends of described low pressure relief valve and parallel connection of pumps, fulcrum in parallel and back fulcrum in parallel before two tie point that both are in parallel form, and after fulcrum in parallel is positioned at the fulcrum back in parallel of described cooler and oil inlet pipe before described; If the pressure in the pipeline is higher than specified value, then low pressure relief valve is opened, and working medium refluxes through it, prevents that working medium from continuing to flow in pipe with the original flow direction, avoids that inhomogeneous cooling is spared, the cooling effect variation.
On the basis of the above, the utility model can be done further improvement: also comprise filter cleaner, described filter cleaner connects the inlet of thermostat; During work, the pipeline that will connect the circulation fuel tank connects filter cleaner, and working medium by filter cleaner, can be removed impurity wherein earlier, improves the quality of working medium, guarantees the unobstructed of cool cycles and prolongs working life of each parts.
On the basis of the above, the utility model can also be done further improvement: also comprise pressure gauge and thermometer, after described pressure gauge was installed on the fulcrum back in parallel of described pump and low pressure relief valve, described thermometer was installed on the oil inlet pipe between the fulcrum back in parallel of the fulcrum preceding in parallel of described pump and low pressure relief valve and described cooler and oil inlet pipe; Can make things convenient for, obtain directly, exactly the pressure of working medium in the cooling unit pipeline by near the pressure gauge that is installed on the pump, can obtain the temperature of working medium in the cooling unit pipeline intuitively, improve the ability of monitoring in real time by thermometer.
On the basis of the above, the utility model can also be done following improvement: the inlet of described filter cleaner is provided with control valve; Be provided with control valve between the fulcrum preceding in parallel of the fulcrum back in parallel in described cooler and inlet pipe road and described pump and low pressure relief valve, the end of described oil inlet pipe is provided with control valve; Between the loop of this cooling unit and circulation fuel tank, a plurality of control valves are set, are convenient to the mobility status of Control work medium in extraordinary circumstances, prevent that user installation circulation fuel tank from making oil flow backwards or vexed in pipeline when improper.
Be provided with a control valve between pressure gauge described in the utility model and the oil inlet pipe; Effect is to make things convenient for the user to check force value when needed, can close this control valve when not needing to check, prevents in-line pulsating pressure surge pressure table, improves the pressure gauge life-span.
Power Drive Unit described in the utility model comprises power source and control apparatus, wherein said power source is a motor, it links to each other with pump and driven pump, and described control apparatus is the magnetic force starter box that is provided with outer casing, and it is connected with motor by cable and controls the electric-motor pump pump; The magnetic force starter box has the advantage of over-current and-load protection, realizes safety control.
Control valve described in the utility model is three sections wafer type welding ball valves or flange-type ball valve or dock ball valve; Be preferably three sections wafer type welding ball valves,, in the middle of can only needing to change after the damage one section, can reduce the expense of maintenances, replacing because it has that volume is little, ease of assembly, repairs advantage easily.
The beneficial effects of the utility model are:
(1) working medium extracted out by oil pump after by thermoregulator and cooler with its temperature regulation to proper temperature;
(2) remain on working medium in the certain temperature range when flowing through oil sprayer, heat unnecessary in the oil sprayer and that in time do not distribute is taken away by heat exchange; Last working medium flows back to the circulation fuel tank, thereby realizes the closed loop cooling;
(3) adopt independently temperature regulation measure in the above-mentioned cooling system, make the oil sprayer temperature controlling more flexible, so neither can burn out oil sprayer idol part because oil sprayer is overheated, also can not cross and coldly make that the oil sprayer thermal stress is inhomogeneous or cause cold corrosion to cause shorten its working life to oil sprayer owing to working medium;
(4) working medium that adopts in the said system (lubricating oil or diesel oil) separates with the oil system of diesel engine, during practical operation, a small volume circulating tank can be set separately come splendid attire, thereby avoid revealing pollution more work medium, economic loss is reduced to minimum because of oil sprayer.
(5) use fresh water as cooling medium, the specific heat ratio of fresh water is bigger, can absorb more heat under less temperature rise, improves the cooling effectiveness of cooler.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the plan view of Fig. 1;
Fig. 4 is the sectional view along A-A line among Fig. 1;
Fig. 5 is a schematic diagram of the present utility model;
Fig. 6 is the schematic representation that flows to of working medium of the present utility model.
Embodiment
Oil sprayer cooling unit shown in Fig. 1～4 is embodiment of the present utility model, and it comprises filter cleaner 1, thermostat 2, bundled tube cooler 3, pump 4, low pressure relief valve 5 and the oil inlet pipe that is communicated with by the multistage oil inlet pipe; Wherein, bundled tube cooler 3 is in parallel with oil inlet pipe, fulcrum A in parallel and back fulcrum B in parallel before two tie point that both are in parallel form, and one section between two fulcrums in parallel be oil inlet pipe 73, is used for both parallel connections are oil pipe 74,74 '; Pump 4 is in parallel with low pressure relief valve 5, fulcrum M in parallel and back fulcrum N in parallel before two tie point that both are in parallel form, be used for low pressure relief valve 5 and pump 4 parallel connections for oil pipe 76.
The top of oil inlet pipe is provided with three sections wafer type welding ball valve 8a, and the inlet of filter cleaner 1 links to each other with three sections wafer type welding ball valve 8a, is oil inlet pipe 71 between the two, and outlet connects thermostat 2, is oil inlet pipe 72 between the two; Thermostat 2 is positioned on the preceding fulcrum A in parallel, and links to each other with inlet, the oil pipe 74 of bundled tube cooler 3 respectively; Pump 4 links to each other with the fulcrum B back in parallel of oil inlet pipe 73 with bundled tube cooler 3 with the fulcrum M preceding in parallel of low pressure relief valve 5, is oil inlet pipe 75 between two fulcrums in parallel, and three sections wafer type welding ball valve 8b are housed on the oil inlet pipe 75; The end of oil inlet pipe is provided with three sections wafer type welding ball valve 8d, its with the fulcrum N back in parallel of pump 4 and low pressure relief valve 5 between be oil inlet pipe 77; Pump 4 with link to each other as the motor 6 ' of power source, motor 6 ' then is connected with the magnetic force starter box 6 of outer casing by cable 61, and is controlled its startings and stopped by this magnetic force starter box 6.
In order further to improve the efficient of cooling, connect the two ends of bundled tube cooler 3 respectively with intake pipe 91, outlet pipe 92, and intake pipe 91 is provided with three sections wafer type welding ball valve 8e, outlet pipe 92 is provided with three sections wafer type welding ball valve 8f.
For realizing the state of working medium in Real Time Observation, the controlling plumbing fixtures, behind the fulcrum N back in parallel of pump 4 and low pressure relief valve 5, pressure gauge 10 is installed by oil pipe 79, and oil pipe 79 also is provided with three sections wafer type welding ball valve 8c that are used to control it, on the oil inlet pipe between the fulcrum B back in parallel of the fulcrum M preceding in parallel of pump 4 and low pressure relief valve 5 and bundled tube cooler 3 and oil inlet pipe thermometer 11 is installed then.
For preventing that this cooling unit from producing the proper functioning of influence of vibration pump 4 in use, a support 12 can be set, adopt base that pump 4 is fixed on the support 12, other device also can be installed on this support 12 simultaneously, so that carrying, mobile.
More than each device connect with all adopting flange being connected of oil inlet pipe, and be provided with pad between two flanges, improve sealing, prevent that working medium from leaking.Top, end at oil inlet pipe is respectively equipped with flange c, b in addition, and the end that an end of intake pipe 91 then is provided with flange a, outlet pipe 92 is provided with flange d, conveniently is connected with other equipment.
This cooling unit is an independent structures, before the use, the top of oil inlet pipe is connected circulation fuel tank 13 by flange c, terminally then connects oil sprayer 14 by flange b, with an oil pipe oil sprayer is linked to each other with the circulation fuel tank in addition, so forms a circuit oil circuit.Simultaneously, intake pipe 91, outlet pipe 92 are connected fresh-water tank by flange a, d, form another circuit water route.As shown in Figure 5 be cooling principle of the present utility model: starting magnetic dynamic case 6, under the effect of working medium (lubricating oil or diesel oil) pump 4, enter thermostat 2 from the circulation fuel tank through oil inlet pipe 71, thermostat 2 itself does not have the function of regulating temperature, it concerns the purpose that reaches the adjusting temperature by the assignment of traffic of regulating lubricating oil between two branch roads, if the temperature of working medium meets the demands, then directly entering pump 4 by oil inlet pipe 73; If the temperature of working medium is higher, then regulate bundled tube cooler 3 cooling of flowing through of a part of working medium, a part is mixed with the working medium that is cooled by oil inlet pipe 73 backs, finally reaches the requirement of satisfying serviceability temperature; If the temperature of working medium is too high, then to be closed be that the by-pass port of thermostat 2 is closed fully to oil inlet pipe one section oil inlet pipe 73 in parallel with cooler, the working medium all cooling vent by thermostat 2 enters the oil pipe 74 bundled tube cooler 3 of flowing through, and enters pump 4 again through supercooling; Flow into the oil sprayer that is connected with pump 4 then, realize the cooling to oil sprayer, the recycle oil case is flowed back in last working medium circulation.If the pressure in the pipeline is higher than specified value, then low pressure relief valve 5 is opened, and working medium refluxes through it.And opposite with working medium as its flow direction of fresh water of cooling medium, flowing to working medium flows in oil inlet pipe, and fresh water flows outside pipe, because the working medium temperature is higher, and heat transfer takes place between the fresh water; Fresh water can reduce the temperature of bundled tube cooler and working medium simultaneously, improves the efficient of cooling greatly.
When this cooling unit was used for the ship machine, oil inlet pipe, oil pipe, water pipe all were wrapped with thermal-protective material.
Below be the problem that should be noted that in the using process of this oil sprayer cooling unit, the working medium that relates to is example with the lubricating oil:
1, the oil sprayer cooling unit is enabled:
Check the position that all ball valves are in out in the cooling unit; and the oily temperature of guaranteeing lubricating oil has been heated to 80～90 ℃; if adopt the lower lubricating oil cooling oil sprayer of temperature; easily oil sprayer is caused cold end corrosion; on the other hand; if directly use the lubricating oil under the normal temperature that oil sprayer is cooled off without heating; oil temperature is crossed low and the oil sprayer temperature is very high so; make that the local temperature difference of oil sprayer is excessive; cause the growth of localized heat stress; thereby shorten the working life of oil sprayer, even cause the thermal fatigue of oil sprayer to be destroyed.Close power supply on the starter box behind the priming pump, is checked working pressure, if pressure does not meet, regulates pressure regulator valve P-B63 before the pump and makes pressure to calibration range (0.2～0.3MPa).Under the situation that guarantees to meet the demands, three sections wafer type welding ball valve 8d of cooling water intake that can be by the bundled tube cooler are adjusted to cooling water flow as far as possible little.The oil sprayer cooling unit comes into operation.
Attention: before starting this oil sprayer cooling unit, the oily temperature of lubricating oil will be passed through steam heated at every turn, treats must stop to heat after temperature reaches requirement again.
2, the oil sprayer cooling unit is stopped using:
After diesel engine was shut down, the oil sprayer cooling unit also will move three to five minutes, stops pump operation, cut off the power supply on the starter box.The oil sprayer cooling unit is stopped using.
3, the exhaust of oil sprayer cooling unit and blowdown:
The air that bleeds in the fuel valve cooling system can influence the service life of equipment of oil sprayer cooling unit, mainly is that oil pump gear is easy to generate cavitation erosion etc. because of entering of air.If oil is unclean, then can influence the life-span and the maintenance of the piping filter of unit.Every after work in 200 hours, open the circulation fuel tank up and down two ball valves carry out exhaust and blowdown.
4, the cleaning of pipe cleaner:
Pipe cleaner is every after work in 200 hours, and the palpus disassembly, cleaning once.This group filter that disconnection will be unpicked and washed is turned on purge cock then and the body inner engine oil is put dried, part is pulled down again, and the part of pulling down cleans and dries up with the gasoline of cleaning, notes dirt not being fallen into the filter core inner chamber, and the part of damage will be changed.The part that cleans up reinstalls in the filter body same as before, tightens up, and assembly is reinstalled the unit.
5, the cleaning of oil sprayer cooling unit
Carry out work such as pump maintenance, exhaust and blowdown, pipe cleaner cleaning when the oil sprayer cooling unit after, the machine oil stain on timely detergent line and the equipment, open the ball valve blowdown behind the base plate, to keep the cleaning of oil sprayer cooling unit.
Claims (10)
1, a kind of cooling unit of diesel injector, it is characterized in that: it comprises thermostat (2), cooler (3) and pump (4), described cooler (3) is in parallel with oil inlet pipe, fulcrum in parallel (A) and back fulcrum in parallel (B) before two tie point that both are in parallel form, described thermostat (2) is positioned on the described preceding fulcrum in parallel (A), and link to each other with the inlet of cooler (3), after described pump (4) is positioned at described back fulcrum in parallel (B), and link to each other with described oil inlet pipe, described pump (4) also is connected with Power Drive Unit, drives by Power Drive Unit.
2, diesel injector cooling unit according to claim 1: it is characterized in that: described cooler (3) is the bundled tube cooler, its two ends connect intake pipe (91) and outlet pipe (92) respectively, described intake pipe (91) is provided with control valve (8e), and described outlet pipe (92) is provided with control valve (8f).
3, diesel injector cooling unit according to claim 1: it is characterized in that: also comprise low pressure relief valve (5), the two ends of described low pressure relief valve (5) are in parallel with pump (4), fulcrum in parallel (M) and back fulcrum in parallel (N) before two tie point that both are in parallel form, and after fulcrum in parallel (M) is positioned at the fulcrum back in parallel (B) of described cooler (3) and oil inlet pipe before described.
4, diesel injector cooling unit according to claim 1: it is characterized in that: also comprise filter cleaner (1), described filter cleaner (1) connects the inlet of thermostat (2).
5, diesel injector cooling unit according to claim 3: it is characterized in that: also comprise pressure gauge (10), after described pressure gauge (10) is installed on the fulcrum back in parallel (N) of described pump (4) and low pressure relief valve (5).
6, diesel injector cooling unit according to claim 3: it is characterized in that: also comprise thermometer (11), described thermometer (11) is installed on the oil inlet pipe between the fulcrum back in parallel (B) of the fulcrum preceding in parallel (M) of described pump (4) and low pressure relief valve (5) and described cooler (3) and oil inlet pipe.
7, diesel injector cooling unit according to claim 1: it is characterized in that: the inlet of described filter cleaner (1) is provided with control valve (8a); Be provided with control valve (8b) between the fulcrum preceding in parallel (M) of the fulcrum back in parallel (B) of described cooler (3) and inflow pipeline and described pump (4) and low pressure relief valve (5); The end of described oil inlet pipe is provided with control valve (8d).
8, diesel injector cooling unit according to claim 5: it is characterized in that: be provided with a control valve (8c) between described pressure gauge (10) and the oil inlet pipe.
9, diesel injector cooling unit according to claim 1: it is characterized in that: described Power Drive Unit comprises power source (6 ') and control apparatus (6), wherein, described power source (6 ') is a motor, it links to each other with pump (4) and driven pump (4), described control apparatus (6) is for being provided with the magnetic force starter box of outer casing, and it is connected with motor (6 ') by cable (61) and controls motor (6 ').
10, according to claim 7 or 8 described diesel injector cooling units: it is characterized in that: described control valve is three sections wafer type welding ball valves or flange-type ball valve or dock ball valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200920050710XU CN201351555Y (en) | 2009-01-22 | 2009-01-22 | Cooling unit of diesel fuel injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200920050710XU CN201351555Y (en) | 2009-01-22 | 2009-01-22 | Cooling unit of diesel fuel injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201351555Y true CN201351555Y (en) | 2009-11-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200920050710XU Expired - Fee Related CN201351555Y (en) | 2009-01-22 | 2009-01-22 | Cooling unit of diesel fuel injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201351555Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2426344A1 (en) | 2010-09-07 | 2012-03-07 | Caterpillar Motoren GmbH & Co. KG | Heating system for an internal combustion engine |
| CN102425518A (en) * | 2011-11-21 | 2012-04-25 | 重庆潍柴发动机厂 | Marine diesel injector cooling unit |
| CN106895976A (en) * | 2017-03-03 | 2017-06-27 | 武汉理工大学 | Marine low-speed machine single cylinder electric-controlled fuel injector test platform |
| CN107575317A (en) * | 2017-08-09 | 2018-01-12 | 浙江吉利新能源商用车有限公司 | The temperature control method and system of a kind of vehicle motor |
| 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 |
-
2009
- 2009-01-22 CN CNU200920050710XU patent/CN201351555Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2426344A1 (en) | 2010-09-07 | 2012-03-07 | Caterpillar Motoren GmbH & Co. KG | Heating system for an internal combustion engine |
| WO2012031713A1 (en) | 2010-09-07 | 2012-03-15 | Caterpillar Motoren Gmbh & Co. Kg | Heating system for an internal combustion engine |
| CN102425518A (en) * | 2011-11-21 | 2012-04-25 | 重庆潍柴发动机厂 | Marine diesel injector cooling unit |
| CN106895976A (en) * | 2017-03-03 | 2017-06-27 | 武汉理工大学 | Marine low-speed machine single cylinder electric-controlled fuel injector test platform |
| CN107575317A (en) * | 2017-08-09 | 2018-01-12 | 浙江吉利新能源商用车有限公司 | The temperature control method and system of a kind of vehicle motor |
| CN107575317B (en) * | 2017-08-09 | 2019-11-26 | 浙江吉利新能源商用车有限公司 | A kind of temperature control method and system of vehicle motor |
| 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091125 Termination date: 20150122 |
|
| EXPY | Termination of patent right or utility model |