CN202091018U - cooling device for explosion-proof diesel engine - Google Patents

Abstract

The utility model discloses an explosion-proof diesel engine cooling device, which solves the problems that the existing diesel engine cooling device has heavy cooling load, high surface temperature of the diesel engine, difficult reduction of exhaust gas temperature, small reduction range, poor cooling effect and the like. The technical scheme includes an engine and an engine fan, and an exhaust manifold, a turbocharger, a first exhaust main pipe, a condenser, a second exhaust main pipe and an exhaust gas treatment box connected in sequence with the exhaust port of the engine, and an exhaust gas treatment box for the engine The cooling internal circulation water pipeline is characterized in that it also includes an external circulation pipeline, the external circulation pipeline includes an external circulation radiator located in front of the engine fan, and the water outlet of the external circulation radiator passes through the external circulation water pump, exhaust The cooling water pipe sleeve of the manifold communicates with the water inlet of the outer circulation radiator. The utility model has simple structure, high heat exchange efficiency, can effectively reduce the surface temperature and exhaust temperature of the explosion-proof diesel engine, and has good cooling effect.

Description

Explosion-proof diesel engine cooling device

technical field

The utility model relates to a vehicle component, in particular to an explosion-proof diesel engine cooling device.

Background technique

The current mining explosion-proof diesel engine cooling system either only uses the internal circulation pipeline to cool down the engine, or uses the original diesel engine host’s own water pump to connect all the pipelines in series for cooling, which breaks the original diesel engine’s own cooling system, thereby increasing the diesel engine The self-cooling load makes it difficult to reduce the surface temperature and exhaust temperature of the explosion-proof diesel engine, the reduction range is very small, and the cooling effect is poor. It is precisely because of the above reasons that when the mine explosion-proof diesel engine is tested on the bench in the laboratory, the coolant is easy to boil and the temperature of the exhaust gas is difficult to reduce.

Contents of the invention

The purpose of this utility model is to solve the above technical problems and provide an explosion-proof diesel engine cooling device with simple structure, high heat exchange efficiency, effective reduction of surface temperature and exhaust temperature of explosion-proof diesel engine, and good cooling effect.

The technical scheme includes an engine and an engine fan, and an exhaust manifold, a turbocharger, a first exhaust main pipe, a condenser, a second exhaust main pipe and an exhaust gas treatment box connected in sequence with the exhaust port of the engine, and an exhaust gas treatment box for the engine The cooled internal circulation water pipeline also includes an external circulation pipeline, and the external circulation pipeline includes an external circulation radiator located in front of the engine fan, and the water outlet of the external circulation radiator is cooled by the external circulation water pump and the exhaust manifold. The water pipe sleeve communicates with the water inlet of the outer circulation radiator.

A first three-way pipe is provided on the pipeline connecting the outer circulation water pump and the cooling water pipe sleeve of the exhaust manifold, the inlet of the first three-way pipe is connected with the outer circulation water pump, and the first outlet of the first three-way pipe is It communicates with the cooling water pipe sleeve of the exhaust manifold, and the second outlet communicates with the cooling water pipe sleeve of the turbocharger, the cooling water pipe sleeve of the condenser, the cooling water pipe sleeve of the second exhaust manifold and the exhaust pipe radiator in turn; A second three-way pipe is provided on the pipeline where the cooling water pipe sleeve of the exhaust manifold communicates with the inlet and outlet of the external circulation radiator. The first inlet of the second three-way pipe communicates with the exhaust pipe radiator, and the second inlet communicates with the exhaust The cooling water pipe sleeve of the gas manifold is connected, and the outlet of the second three-way pipe is connected with the water inlet of the outer circulation radiator.

The internal circulation pipeline includes an internal circulation radiator in front of the engine fan, and the water outlet of the internal circulation radiator communicates with the water inlet of the internal circulation radiator through the engine cooling water pipe sleeve and the internal circulation water pump.

Since the explosion-proof diesel engine is used for underground operations, each component of the utility model must be subjected to conventional explosion-proof treatment in accordance with industry standards.

Effective effect:

The inner circulation pipeline is used to cool the engine, and the outer circulation pipeline is used to cool the connecting parts of the engine. The two sets of circulation pipelines circulate independently and do not affect each other, which greatly improves the heat exchange efficiency and makes the engine and its accessories Both can ensure a good cooling effect, and avoid the problems that the coolant is easy to boil and the temperature of the exhaust gas is high.

Description of drawings

Figure 1 is a schematic diagram of the installation of the utility model.

Among them: 1-external circulation radiator, 2-internal circulation radiator, 3-engine fan, 4-external circulation water pump, 5-engine, 6-cooling water pipe sleeve of exhaust manifold, 7-first three-way pipe, 8-Cooling water pipe sleeve of turbocharger, 9-Cooling water pipe sleeve of first exhaust main pipe, 10-Cooling water pipe sleeve of condenser, 11-Internal circulating water pump, 12-Cooling water pipe sleeve of second exhaust main pipe, 13-the second tee pipe, 14-pipe radiator, 15-exhaust gas treatment box.

Detailed ways

With reference to Fig. 1, the utility model comprises engine 5 and engine fan 3, and is connected with exhaust manifold, turbocharger, the first exhaust manifold, condenser, the second exhaust manifold and exhaust port successively with engine 5 Exhaust gas treatment box 15, and the internal circulation water pipeline for cooling the engine 5, and also includes an external circulation pipeline, the external circulation pipeline includes an external circulation radiator 1 located in front of the engine fan 3, and the external circulation radiator 1 The water outlet of the outlet is connected with the first three-way inlet 7 through the outer circulation water pump 4, the first outlet of the first three-way pipe 7 is connected with the cooling water pipe sleeve 6 of the exhaust manifold, and the second outlet is connected with the cooling water of the turbocharger in turn. The water pipe sleeve 8, the cooling water pipe sleeve 10 of the condenser, the cooling water pipe sleeve 12 of the second exhaust main pipe and the exhaust pipe radiator 14 are connected; the cooling water pipe sleeve 6 of the exhaust manifold is connected with the water inlet of the outer circulation radiator 1 A second three-way pipe 13 is arranged on the pipeline, the first inlet of the second three-way pipe 13 communicates with the exhaust pipe radiator 14, the second inlet communicates with the cooling water pipe sleeve 6 of the exhaust manifold, the second three The outlet of the through pipe 13 communicates with the water inlet of the outer circulation radiator 1 . The internal circulation pipeline includes the internal circulation radiator 2 in front of the engine fan 3 , and the water outlet of the internal circulation radiator 2 communicates with the water inlet of the internal circulation radiator 2 through the cooling water pipe sleeve of the engine 1 and the internal circulation water pump 11 .

Claims (3)

1. anti-explosion diesel engine cooling unit, comprise motor and engine blower, and the discharge manifold, turbosupercharger, first exhaust manifold, condenser, second exhaust manifold and the waste gas treatment case that are connected successively with exhaust opening of engine, with the interior circulating water line that is engine cooling, it is characterized in that, also comprise external circulation line, described external circulation line comprises the outer circulation radiator that is positioned at engine blower the place ahead, and described outer circulation radiator outlet is communicated with the outer circulation water inlet of radiator through the cooling water pipe box of outer circulation water pump, discharge manifold.

2. anti-explosion diesel engine cooling unit as claimed in claim 1, it is characterized in that, described outer circulation water pump is provided with first three-way pipe with the pipeline that the water-cooling tube cover of discharge manifold is communicated with, the import of described first three-way pipe is communicated with the outer circulation water pump, first outlet of first three-way pipe is communicated with the water-cooling tube cover of discharge manifold, and second outlet is communicated with the cooling water pipe box of turbosupercharger, the cooling water pipe box of condenser, the cooling water pipe box and the comb radiator of second exhaust manifold successively; The cooling water pipe box of described discharge manifold is provided with second three-way pipe with the pipeline that outer circulation radiator exit port is communicated with, first import of described second three-way pipe is communicated with the comb radiator, second import is communicated with the water-cooling tube cover of discharge manifold, and the outlet of second three-way pipe is communicated with the outer circulation water inlet of radiator.

3. anti-explosion diesel engine cooling unit as claimed in claim 1 or 2, it is characterized in that, described inner loop pipeline comprises the interior circulation radiator in engine blower the place ahead, and described interior circulation radiator outlet is communicated with interior circulation water inlet of radiator through engine cooling water pipe sleeve, interior circulating water pump.

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