A kind of radiator with expansion tank for dredger
Technical field
This utility model is related to technical field of engineering machinery, and more particularly, to a kind of dredger is with expansion tank
Radiator.
Background technology
The filling of expansion tank and degasification are mainly the air filling cooling system and remaining in system in filling process
Discharge and keep water pump pumps ability in time to maintain sufficient coolant rate in system.Excavator is carrying state's trimotor
Afterwards, its caloric value increases, and the gas producing in cooling system work needs to discharge in time by external expansion tank, in case right
Cooling system produces injury.It is desired that the connected mode of improvement radiator and expansion tank is ensured in extreme operating conditions with this
Under, cooling system has enough pressure to prevent coolant boiling and water pump cavitation pitting.
Fig. 1 is the mounting structure schematic diagram of cooling system external expansion tank in prior art;Fig. 2 is in prior art
After cooling system external expansion tank fills first, air remains distribution schematic diagram.As shown in Figure 1-2, this cooling system includes
Electromotor 51, thermostat 52, electromotor gas removing pipe 53, liquid level window 54, secondary cistern 55, pressure cover 56, radiator gas removing pipe 57,
Filler pipe 58, radiator 59, long-range by-pass 60, gearbox cooler 61 and water pump 62;Wherein, the requirement for height of secondary cistern 55
The height of radiator 59 assembly to be far above, to ensure that disposably filling it up with rate in coolant injection is not less than 90%.
Prior art suffers from the drawback that:
Shortcoming one:For excavator product, space requirement is too high, in the case that upper hood does not substantially increase, attached water
Case 55 limited with radiator 59 drop it is impossible to form very big pressure reduction, when the speed that adds water is more than 6L/s, the internal gas of secondary cistern 55
Body is difficult to discharge at once, needs on a production line repeatedly to fill and repeatedly could fill it up with coolant.
Shortcoming two:With the degasification of cooling system after initial filling, the coolant liquid level in secondary cistern 55 can decline, because
The air 63 remaining in electromotor 51, radiator 59 and gearbox cooler 61 loop etc. can be discharged to secondary cistern 55 from gas removing pipe
In.The air 63 remaining after first filling in systems will determine the decline degree of liquid level in secondary cistern 55, and electromotor 51 is in fortune
After turning, bubble will be pooled to radiator 59 top with blood circulation, and our purpose is intended to push up radiator 59 as early as possible
The gas in portion is discharged in secondary cistern 55, but existing design is difficult to this point by single radiator gas removing pipe 57.
Utility model content
The purpose of this utility model is for overcoming above-mentioned the deficiencies in the prior art, providing a kind of dredger with swollen
The radiator of swollen water tank.
For achieving the above object, this utility model adopts following technical proposals:
A kind of radiator with expansion tank for dredger, including upper header, coolant injection mouth, dissipates
Hot device closure, radiator first gas removing pipe, radiator second gas removing pipe, electromotor remove QI KOU, expansion tank assembly, swelling water
Case closure, expansion tank liquid-sighting glass, filler pipe and radiator lower header;
Described coolant injection mouth is arranged on upper header and is sealed by radiator cap, solid;
Ventilating joint is welded with described coolant injection mouth, one end of described radiator first gas removing pipe is connected to cooling
On ventilating joint on liquid filler, the other end of described radiator first gas removing pipe is connected with the blow vent on expansion tank assembly
Connect;
The side of described upper header is also welded with blow vent, and one end of described radiator second gas removing pipe is connected to
On the blow vent of upper header side, on the other end of described radiator second gas removing pipe and swollen water tank assembly other one
Individual blow vent is connected;
The top of described swollen water tank assembly is provided with expansion tank closure;
It is provided with expansion tank liquid-sighting glass, on the side of described expansion tank liquid-sighting glass on the leading flank of described swollen water tank assembly
While being provided with electromotor to remove QI KOU.
One lower mouth of a river is also had on described expansion tank assembly, described lower mouth of a river passes through filler pipe and radiator lower header phase
Even.
Its operation principle is:Adopt radiator cap, solid (no pressure) and expansion tank closure (pressure simultaneously
0.9bar), when coolant fills first, open radiator cap, solid (no pressure) and expansion tank closure (pressure simultaneously
0.9bar), then by coolant injection mouth water tank is filled it up with, now the gas within water tank simultaneously can be from coolant injection mouth
Discharge with the top filler of swollen water tank assembly, and discharge the speed of gas and greatly increase, after upper header water is full, close
Close radiator cap, solid (no pressure), then again to the top filler filling coolant of expansion tank assembly, treat that liquid reaches
During the midline position of expansion tank liquid-sighting glass, stop the filling of coolant.
In addition, being supplemented it is only necessary to open expansion tank closure (pressure 0.9bar) when supplementing coolant at ordinary times
?.
When electromotor works, because expansion tank position is higher, the gas of upper header alluvial can be by dissipating
, to aerofluxuss in expansion tank assembly, exhaust velocity also greatly increases for hot device first gas removing pipe and radiator second gas removing pipe.
Dredger the having the beneficial effect that with the radiator with expansion tank that this utility model provides:Improve cold
But system once filling rate and degasification performance.Specifically, system coolant injection speed lifting 30%, upper tank exhaust gas inside speed
Degree is accelerated, and de-gas is improved.
Add tank lid at existing radiator top, when filling first, will be close to this radiator cap, solid and expansion tank
Capping is opened simultaneously, fills coolant to radiator first, and, up to 11L/s, the gas in system can be by dissipating for filling speed
Hot device filler and expansion tank filler are discharged simultaneously, close radiator cap, solid after radiator coolant is filled it up with, then to
Expansion tank fills coolant, speed 6L/s, by improving, can increase by 30% filling speed.
Compact for excavator inner space, in the case that expansion tank cannot high be arranged, by radiator and expansion
Water tank connecting portion exhaust structure improves, and improves de-gas.
Brief description
Fig. 1 is the mounting structure schematic diagram of cooling system external expansion tank in prior art;
Fig. 2 is air residual distribution schematic diagram after cooling system external expansion tank fills first in prior art;
Fig. 3 is the structural representation of this utility model radiator and the connected mode of expansion tank.
Wherein:1. upper header;2. coolant injection mouth;3. radiator cap, solid (no pressure);4. radiator
One gas removing pipe;5. radiator second gas removing pipe;6. electromotor removes QI KOU;7. expansion tank assembly;8. expansion tank closure (pressure
Power 0.9bar);9. expansion tank liquid-sighting glass;10. filler pipe;11. radiator lower headers;51. electromotors;52. thermostats;53.
Electromotor gas removing pipe;54. liquid level windows;55. secondary cisterns;56. pressure covers;57. radiator gas removing pipe;58. filler pipes;59. dissipate
Hot device;60. long-range by-passes;61. gearbox cooler;62. water pumps;63. (residual) air.
Specific embodiment
With reference to the accompanying drawings and examples this utility model is further illustrated.
As shown in figure 3, a kind of radiator with expansion tank for dredger, including upper header 1, cooling
Liquid filler 2, radiator cap, solid (no pressure) 3, radiator the first gas removing pipe 4, radiator the second gas removing pipe 5, electromotor remove
QI KOU 6, expansion tank assembly 7, expansion tank closure (pressure 0.9bar) 8, expansion tank liquid-sighting glass 9, filler pipe 10 and dissipate
Hot device lower header 11;Wherein, coolant injection mouth 2 is arranged on upper header 1 and is sealed by radiator cap, solid 3, and
Ventilating joint is welded with coolant injection mouth 2, one end of radiator the first gas removing pipe 4 is connected on coolant injection mouth 2
On ventilating joint, the other end is connected with the blow vent on expansion tank assembly 7;In addition, the side of upper header 1 is also welded
Have blow vent, one end of radiator the second gas removing pipe 5 is connected on the blow vent of upper header 1 side, the other end with swollen
Another one blow vent on water tank assembly 7 is connected, and the top of swollen water tank assembly 7 is provided with expansion tank closure (pressure
0.9bar) 8, it is used for sealed expansion water tank;It is provided with expansion tank liquid-sighting glass 9, by this on the leading flank of swollen water tank assembly 7
Expansion tank liquid-sighting glass 9 can observe the filling situation of swollen water tank assembly 7 at any time, in the setting of the side of expansion tank liquid-sighting glass 9
There is electromotor to remove QI KOU 6, be easy to discharge in-engine gas in time.Reach more than 0.9bar in the internal gross pressure of radiator
When, expansion tank closure 8 is opened, and gaseous vapor is entered in air.Also have a lower mouth of a river on expansion tank assembly 7, should
Lower mouth of a river is connected with radiator lower header 11 by filler pipe 10, and it is used for the exchange of expansion tank and radiator coolant.
Its operation principle is:Adopt radiator cap, solid (no pressure) 3 and expansion tank closure (pressure simultaneously
0.9bar) 8, when coolant fills first, open radiator cap, solid (no pressure) 3 and expansion tank closure (pressure simultaneously
Power 0.9bar) 8, then by coolant injection mouth 2, water tank is filled it up with, now the gas within water tank simultaneously can from coolant plus
The top filler of geat 2 and swollen water tank assembly 7 is discharged, and the speed of discharge gas greatly increases, and treats upper header 1 water
Man Hou, closes radiator cap, solid (no pressure) 2, then again to the top filler filling coolant of expansion tank assembly 7, treats
When liquid reaches the midline position of expansion tank liquid-sighting glass 9, stop the filling of coolant.
In addition, being supplemented it is only necessary to open expansion tank closure (pressure 0.9bar) 8 when supplementing coolant at ordinary times
?.
When electromotor works, because expansion tank position is higher, the gas of upper header 1 alluvial can be by dissipating
, to aerofluxuss in expansion tank assembly 7, exhaust velocity also greatly increases for hot device the first gas removing pipe 4 and radiator the second gas removing pipe 5.
The radiator with expansion tank for the dredger that this utility model provides, improves cooling system and once adds
Note rate and degasification performance.Specifically, system coolant injection speed lifting 30%, upper header exhaust gas inside speed adds
Hurry up, de-gas is improved.
Add tank lid at existing radiator top, when filling first, will be close to this radiator cap, solid and expansion tank
Capping is opened simultaneously, fills coolant to radiator first, and, up to 11L/s, the gas in system can be by dissipating for filling speed
Hot device filler and expansion tank filler are discharged simultaneously, close radiator cap, solid after radiator coolant is filled it up with, then to
Expansion tank fills coolant, speed 6L/s, by improving, can increase by 30% filling speed.
Compact for excavator inner space, in the case that expansion tank cannot high be arranged, by radiator and expansion
Water tank connecting portion exhaust structure improves, and improves de-gas.
Although the above-mentioned accompanying drawing that combines is described to specific embodiment of the present utility model, not new to this practicality
The restriction of type protection domain, one of ordinary skill in the art should be understood that on the basis of the technical solution of the utility model, ability
Field technique personnel do not need to pay the various modifications that creative work can make or deformation still in protection model of the present utility model
Within enclosing.