CN206362240U - High-power diesel engine its Test Rig low temperature water-cooling circulating device - Google Patents
High-power diesel engine its Test Rig low temperature water-cooling circulating device Download PDFInfo
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- CN206362240U CN206362240U CN201621449310.2U CN201621449310U CN206362240U CN 206362240 U CN206362240 U CN 206362240U CN 201621449310 U CN201621449310 U CN 201621449310U CN 206362240 U CN206362240 U CN 206362240U
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- 238000001816 cooling Methods 0.000 title claims abstract description 61
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 80
- 230000008676 import Effects 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims description 10
- 239000000498 cooling water Substances 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 3
- 230000005484 gravity Effects 0.000 description 7
- 230000009194 climbing Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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Abstract
A kind of high-power diesel engine its Test Rig low temperature water-cooling circulating device, including cooling tower, low temperature pond, water at low temperature pump group, hot water pump group, hot-tub, direct return pipe, drain valve, diesel engine medium cooler and hydraulic dynamometer, wherein, low temperature pond is located at the lower section of cooling tower, the import of water at low temperature pump group connects the low temperature pond, outlet connects diesel engine medium cooler and hydraulic dynamometer respectively, the outlet connection hot-tub of the hydraulic dynamometer, the import connection hot-tub of hot water pump group, outlet connects cooling tower by return pipe, direct return pipe one end connects the outlet of diesel engine medium cooler, the other end connects cooling tower, drain valve is connected between the outlet of diesel engine medium cooler and the outlet of hydraulic dynamometer.The utility model utilizes the pressure of return water of diesel engine medium cooler outlet, backwater directly is delivered into cooling tower, reduces the power consumption of system, it is to avoid the cavitation of hydraulic dynamometer and leakage, improves economy and reliability.
Description
Technical field
The utility model is related to a kind of high-power diesel engine test run technological equipment, and in particular to a kind of high-power diesel engine
Its Test Rig low temperature water-cooling circulating device, belongs to diesel engine manufacturing technology field.
Background technology
The low temperature water supply system of high-power diesel engine its Test Rig generally uses open type low temperature water system and closed cycle
Low temperature water system, wherein, open type low temperature water system exist water power consumption it is excessive, pollution surrounding aqueous environment defect, substantially not by
Using the overwhelming majority uses closed cycle low temperature water system at present.
As shown in Figure 1, it mainly includes cooling tower to the structure of conventional its Test Rig low temperature water cooling closed circulation system
1st, low temperature pond 2, water at low temperature pump group 3, hot water pump group 4, hot-tub 5, its main working process is：First, water at low temperature pump group 3 will
Water at low temperature in low temperature pond 2 is delivered to diesel engine medium cooler 6 and hydraulic dynamometer 7, is then returned by pressure difference and gravity
To the hot-tub 5 (being located at below earth's surface) of low level；Then hot water pump group 4 returns to the hot water in hot-tub 5 by return pipe 8
Cooling tower 1, falls after rise to low temperature pond 2 finally by water at low temperature of the cooling tower 1 after air-cooled, so completes circulation.
But the conventional closed cycle low temperature water system that above-mentioned diesel engine its Test Rig is used, its all backwater is all logical
The pumped back cooling tower 1 of superheated water pump group 4, thus power consumption is very big.
For the diesel engine of initial launch, often its machine band air cooling apparatus is newer, and the incrustation scale of inner passage is less, water
Flow resistance power is also smaller, and generally equipment pressure drop only maintains 0.5bar or so, that is, meets diesel air Gas Cooler
After 2.5bar-3bar inlet pressure requirement, the outlet pressure of equipment is also higher.Low temperature water-cooling circulating device is provided with high-lift
Pump group and small-bore orifice plate, the cooling water with certain pressure discharged by diesel engine medium cooler 6 drop through small-bore orifice plate
After pressure, hot-tub 5 is drained into together with the backwater of hydraulic dynamometer 7, this not only fails rationally to utilize the supply of water at low temperature pump group 3
Energy, also add the operation burden of hot water pump group 4.Simultaneously as the backwater of diesel engine medium cooler 6 still has a level pressure
Power, if therefore more than two sets diesel engine simultaneously test run, to the return main of partial common, also result in hydraulic dynamometer 7
Gravity water return is not smooth, causes the inside water cavity of hydraulic dynamometer 7 to produce cavitation and leakage.
Utility model content
Technical problem to be solved in the utility model be overcome the shortcomings of existing low temperature water-cooling circulating device there is provided
A kind of more economical, more energy efficient, more effective high-power diesel engine its Test Rig low temperature water-cooling circulating device, by increasing bavin
Oil machine medium cooler is directly connected to the water return pipeline of cooling tower, makes full use of the backwater pressure of diesel engine medium cooler outlet
Power, realizes the direct backwater cooling tower of diesel engine medium cooler, so as to reduce the power consumption cost of complete equipment.
The utility model solves the technical scheme that its technical problem used：
A kind of high-power diesel engine its Test Rig low temperature water-cooling circulating device, including cooling tower, low temperature pond, low temperature
Water pump group, hot water pump group, hot-tub, diesel engine medium cooler and hydraulic dynamometer, the low temperature pond are located at the cooling
The lower section of tower, the import of the water at low temperature pump group connects the low temperature pond, and outlet connects the diesel engine medium cooler respectively
And hydraulic dynamometer, the outlet of the hydraulic dynamometer connects the hot-tub, the import connection hot water of the hot water pump group
Pond, outlet connects the cooling tower by return pipe, it is characterised in that：The low temperature water-cooling circulating device also includes directly
Return pipe, the direct return pipe one end connects the outlet of the diesel engine medium cooler, and the other end connects the cooling tower.
Further, described low temperature water-cooling circulating device also includes drain valve, and the drain valve is connected to the bavin
Between the outlet of oil machine medium cooler and the outlet of hydraulic dynamometer.
Further, described drain valve is usually normally off, when the outlet of described diesel engine medium cooler
When pressure is less than 2.0bar, the drain valve is opened, and the cooling water of the diesel engine medium cooler is still back to the heat
Pond.
Further, described water at low temperature pump group and hot water pump group are variable frequency pump.
Further, the start and stop of described hot water pump group and its quantity of the pump put into operation by the hot-tub liquid level
And the rate of change of liquid level is controlled.
Compared with prior art, the beneficial effects of the utility model are as follows：
The utility model adds the direct return pipe of connection diesel engine medium cooler and cooling tower in return main,
The pressure of return water of diesel engine medium cooler outlet is made full use of, backwater is directly delivered into cooling tower, not only greatly reduced
The power consumption of whole system, and eliminate the hot water pumping unit of nearly half；Meanwhile, the gravity of unobstructed hydraulic dynamometer is returned
Water, it is to avoid water cavity produces cavitation and leakage inside hydraulic dynamometer；Additionally it is possible to the outlet by adjusting water at low temperature pump group
Pressure, further ensure that diesel engine medium cooler enters machine pressure, so as to improve the economy and reliability of device.
The hydraulic dynamometer and diesel engine medium that the utility model is particularly suitable for use in high-power diesel engine its Test Rig are (empty
Gas, lubricating oil, fuel oil, high-temperature water, jacket water) cooler operation water at low temperature supply.
Brief description of the drawings
Fig. 1 is the schematic diagram of existing high-power diesel engine its Test Rig low temperature water-cooling circulating device.
Fig. 2 is structural representation of the present utility model.
Embodiment
High-power diesel engine its Test Rig described in the utility model takes into full account backwater with low temperature water-cooling circulating device
The pressure loss summation of pipeline and cooling tower is close with backwater back pressure (bigger), increases direct return pipe newly on system return pipeline
(returning cooling tower), by using air cooler back pressure energy, overcomes the direct backwater of water return pipeline resistance to cooling tower, not only saves
Almost half hot water pump group equipment of system, also greatly reduces the electric power energy consumption of system.
Below in conjunction with the accompanying drawings with specific embodiment to high-power diesel engine its Test Rig low temperature described in the utility model
Water-cooling circulating device is described in further detail, but protection domain of the present utility model should not be limited with this.
Referring to Fig. 2, diagram high-power diesel engine its Test Rig includes cooling tower 1, low with low temperature water-cooling circulating device
Heated pool 2, water at low temperature pump group 3, hot water pump group 4, hot-tub 5, direct return pipe 9, drain valve 10, diesel engine medium cooler 6
With hydraulic dynamometer 7.
The low temperature pond 2 is located at the lower section of the cooling tower 1, is dripped for being received in the cooling tower 1 after air-cooled
Water at low temperature.
The import of the water at low temperature pump group 3 connects the low temperature pond 2, and outlet connects the diesel engine medium cooling respectively
Device 6 and hydraulic dynamometer 7.The water at low temperature pump group 3 be variable frequency pump, can according to send water-carrying capacity requirement come adjusting water outlet flow,
And the inflow requirement of diesel engine medium cooler 6 and hydraulic dynamometer 7 can be met by adjusting outlet pressure.
The hydraulic dynamometer 7 is to simulate the loading of diesel engine propeller, and it exports the connection hot-tub 5, by the water
The backwater that power dynamometer 7 comes out is delivered in the hot-tub 5 by gravity.
The import of the hot water pump group 4 connects the hot-tub 5, and outlet connects the cooling tower 1 by return pipe 8；Should
Hot water pump group 4 is variable frequency pump, for the water in hot-tub 5 to be delivered into the cooling tower 1.The start and stop of the hot water pump group 4 and its
The quantity of the pump put into operation is controlled by the liquid level of the hot-tub 5 and the rate of change of liquid level：When the liquid level of the hot-tub 5
During more than limiting height, the hot water pump group 4 starts and the heat-exchanger pump in the hot-tub 5 is back into the cooling tower 1, should
Hot water pump group 4 starts the quantity of the hot water pump group 4 according to the level value of the hot-tub 5 and the climbing of liquid level.
Described one end of direct return pipe 9 connects the outlet of the diesel engine medium cooler 6, and the other end connects the cooling
Tower 1；The drain valve 10 is connected between the outlet of the diesel engine medium cooler 6 and the outlet of hydraulic dynamometer 7.It is described
Drain valve 10 be usually normally off, when monitoring system measure the outlet of the diesel engine medium cooler 6 pressure (cooling
Device return main pressure) be less than 2.0bar when, the drain valve 10 is opened, and makes the cooling water of the diesel engine medium cooler 6
Still the hot-tub 5 is back to, cooling tower 1 is back to using former return pipe 8, smooth or pressure of return water is not inclined because of water delivery to prevent locking system
It is low and can not backwater so that further improve system security and reliability.
The utility model be by the hydraulic dynamometer 7 in high-power diesel engine its Test Rig low temperature water-cooling circulating system and
Diesel engine medium cooler 6 separates backwater, and its main working process is：First, the water storage in low temperature pond 2 is in high-power centrifugation
Water at low temperature pump group 3 swabbing action under, be pumped to hydraulic dynamometer 7 all the way, then the propeller loading of simulation diesel engine passes through
Gravity is fallen after rise in the low level hot-tub 5 to earth's surface, and when the liquid level of hot-tub 5, which exceedes, limits height, hot water pump group 4 starts,
Heat-exchanger pump in hot-tub 5 is back to cooling tower 1, gravity is fallen after rise to low temperature pond 2 after being cooled down through blower fan, completes circulation；It is another
Water storage in low temperature pond 2 is pumped to diesel engine medium cooler 6 by road water at low temperature pump group 3, in being debugged to diesel engine test run not
Cooled down with heated medium, because the outlet of diesel engine medium cooler 6 possesses certain pressure, the higher outlet pressure of recycling water utilization
Power, overcomes the direct backwater of height fall of pipeline and cooling tower 1 to cooling tower 1, and gravity reflux is to water at low temperature after being cooled down through blower fan
Pond 2, completes circulation.When monitoring system measures the outlet pressure of diesel engine medium cooler 6 less than 2.0bar, drain valve 6 is opened,
Cooling water still using the pipeline backwater of former hot-tub 5, anti-locking system because the not smooth back pressure of water delivery is relatively low can not backwater, further
Improve security of system and reliability.
The control flow of described device is：Start water at low temperature pump group 3 first, and be situated between according to hydraulic dynamometer 7 and diesel engine
The machine pressure requirements that enter of matter cooler 6 set each pump output pressure；After device brings into operation, hot water pump group 4 will be according to hot-tub 5
Level value and liquid level climbing, start the quantity of pump in hot water pump group 4, drain valve 6 is total according to diesel engine medium cooler 6
The outlet pressure of pipe is automatically turned on and closed.
Preferred embodiment of the present utility model is above are only, not for limiting protection domain of the present utility model,
All equivalence changes made according to context of the present utility model and improvement, are regarded as the utility model model claimed
Farmland.
Claims (5)
1. a kind of high-power diesel engine its Test Rig low temperature water-cooling circulating device, including cooling tower, low temperature pond, water at low temperature
Pump group, hot water pump group, hot-tub, diesel engine medium cooler and hydraulic dynamometer, the low temperature pond are located at the cooling tower
Lower section, the import of the water at low temperature pump group connects the low temperature pond, outlet connect respectively the diesel engine medium cooler and
Hydraulic dynamometer, the outlet of the hydraulic dynamometer connects the hot-tub, and the import of the hot water pump group connects the hot-tub,
Outlet connects the cooling tower by return pipe, it is characterised in that：The low temperature water-cooling circulating device, which also includes, directly to return
Water pipe, the direct return pipe one end connects the outlet of the diesel engine medium cooler, and the other end connects the cooling tower.
2. high-power diesel engine its Test Rig low temperature water-cooling circulating device according to claim 1, it is characterised in that：
Described low temperature water-cooling circulating device also includes drain valve, and the drain valve is connected to going out for the diesel engine medium cooler
Between mouth and the outlet of hydraulic dynamometer.
3. high-power diesel engine its Test Rig low temperature water-cooling circulating device according to claim 2, it is characterised in that：
Described drain valve is usually normally off, when the pressure of the outlet of described diesel engine medium cooler is less than 2.0bar,
The drain valve is opened, and the cooling water of the diesel engine medium cooler is still back to the hot-tub.
4. high-power diesel engine its Test Rig low temperature water-cooling circulating device according to claim 1, it is characterised in that：
Described water at low temperature pump group and hot water pump group are variable frequency pump.
5. high-power diesel engine its Test Rig low temperature water-cooling circulating device according to claim 1, it is characterised in that：
The start and stop of described hot water pump group and its quantity of the pump put into operation are entered by the liquid level of the hot-tub and the rate of change of liquid level
Row control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621449310.2U CN206362240U (en) | 2016-12-28 | 2016-12-28 | High-power diesel engine its Test Rig low temperature water-cooling circulating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621449310.2U CN206362240U (en) | 2016-12-28 | 2016-12-28 | High-power diesel engine its Test Rig low temperature water-cooling circulating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206362240U true CN206362240U (en) | 2017-07-28 |
Family
ID=59377383
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621449310.2U Expired - Fee Related CN206362240U (en) | 2016-12-28 | 2016-12-28 | High-power diesel engine its Test Rig low temperature water-cooling circulating device |
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| Country | Link |
|---|---|
| CN (1) | CN206362240U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112636538A (en) * | 2020-12-23 | 2021-04-09 | 江苏星光发电设备有限公司 | Cooling system for diesel generating set |
| CN113340610A (en) * | 2021-06-01 | 2021-09-03 | 山东格仑特电动科技有限公司 | Novel fire engine water conservancy performance detects pipe-line system |
| CN113670622A (en) * | 2021-08-17 | 2021-11-19 | 中国船舶重工集团柴油机有限公司 | Cooling water return system and method for marine diesel engine bench test |
| CN115164444A (en) * | 2022-07-05 | 2022-10-11 | 上海中船三井造船柴油机有限公司 | Cooling water refrigerating system for diesel engine main engine test car |
-
2016
- 2016-12-28 CN CN201621449310.2U patent/CN206362240U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112636538A (en) * | 2020-12-23 | 2021-04-09 | 江苏星光发电设备有限公司 | Cooling system for diesel generating set |
| CN113340610A (en) * | 2021-06-01 | 2021-09-03 | 山东格仑特电动科技有限公司 | Novel fire engine water conservancy performance detects pipe-line system |
| CN113670622A (en) * | 2021-08-17 | 2021-11-19 | 中国船舶重工集团柴油机有限公司 | Cooling water return system and method for marine diesel engine bench test |
| CN113670622B (en) * | 2021-08-17 | 2023-10-31 | 中船发动机有限公司 | Cooling water return system and method for bench test of marine diesel engine |
| CN115164444A (en) * | 2022-07-05 | 2022-10-11 | 上海中船三井造船柴油机有限公司 | Cooling water refrigerating system for diesel engine main engine test car |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170728 |
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| CF01 | Termination of patent right due to non-payment of annual fee |