A diesel generator set cooling system and an engineering vehicle

Abstract

The present invention discloses a cooling system for a diesel generator set and an engineering vehicle. The cooling system for the diesel generator set includes an intercooling cooling circulation circuit and a water cooling circulation circuit; the intercooling cooling circulation circuit is provided with an intercooler radiator, the air inlet of the intercooler radiator is connected to the supercharger of the engine, and the air outlet of the intercooler radiator is connected to the air intake system of the engine; the water cooling circulation circuit is provided with a first water-cooled radiator and a second water-cooled radiator. The water inlet of the first water-cooled radiator is connected to the water outlet of the engine, the water outlet of the first water-cooled radiator is respectively connected to the water inlet of the second water-cooled radiator and the water inlet of the engine, the water outlet of the second water-cooled radiator is connected to the water inlet of the generator, and the water outlet of the generator is connected to the water inlet of the engine. The present invention can reduce the structural size of the radiator of the cooling system, improve the cooling and heat dissipation efficiency, and reduce the energy consumption of the cooling system.

Description

Technical Field

[0001] The present invention relates to the technical field of power system cooling, and particularly relates to a cooling system for a diesel generator set and an engineering vehicle. Background Art

[0002] The diesel generator set for an engineering vehicle consists of a diesel engine and a generator. The diesel engine provides power to drive the rotation of the generator shaft, and the generator outputs high-voltage electricity. The cooling system is a key component of the diesel generator set for an engineering vehicle. Without the cooling system, the diesel generator set simply cannot work properly.

[0003] At present, the power source of the cooling system for the diesel generator set of an engineering vehicle is mostly driven by a hydraulic pump, and the diesel engine and the generator adopt an independent cooling method. For example, the diesel engine combines air cooling and water cooling, while the generator adopts air cooling or water cooling. The two are independent, and the cooling and heat dissipation efficiency is not high, resulting in excessive energy consumption of the cooling system; or an integrated radiator is used to cool both the diesel engine and the generator. However, due to the different heat dissipation requirements of the two, the cooling system is not connected, resulting in an oversized radiator structure size and increased manufacturing costs.

[0004] Therefore, how to minimize the radiator structure size of the cooling system and reduce the energy consumption of the cooling system is a technical problem that those skilled in the art urgently need to solve. Summary of the Invention

[0005] To solve the above technical problems, the present invention provides a cooling system for a diesel generator set and an engineering vehicle, which can reduce the radiator structure size of the cooling system, improve the cooling and heat dissipation efficiency, and reduce the energy consumption of the cooling system.

[0006] On the one hand, the present invention provides a cooling system for a diesel generator set, including an intercooling cooling circulation circuit and a water cooling cooling circulation circuit;

[0007] The intercooling cooling circulation circuit is provided with an intercooling radiator, the air inlet of the intercooling radiator is connected to the supercharger of the engine, and the air outlet of the intercooling radiator is connected to the intake system of the engine;

[0008] The water cooling cooling circulation circuit is provided with a first water cooling radiator and a second water cooling radiator. The water inlet of the first water cooling radiator is connected to the water outlet of the engine, the water outlet of the first water cooling radiator is respectively connected to the water inlet of the second water cooling radiator and the water inlet of the engine, the water outlet of the second water cooling radiator is connected to the water inlet of the generator, and the water outlet of the generator is connected to the water inlet of the engine.

[0009] Preferably, a thermostat is provided at the water outlet of the engine; when the valve of the thermostat is opened, the water outlet of the engine is connected to the water inlet of the first water-cooled radiator, and the water-cooled cooling cycle circuit enters the large cycle cooling mode; when the valve of the thermostat is closed, the water outlet of the engine is connected to the water inlet of the generator, and the water-cooled cooling cycle circuit enters the small cycle cooling mode.

[0010] Preferably, a water pump is provided at the water inlet of the engine to provide power for the water-cooled cooling cycle circuit.

[0011] Preferably, a throttle valve is provided between the water outlet of the first water-cooled radiator and the water inlet of the engine.

[0012] Preferably, a one-way valve is provided between the water outlet of the first water-cooled radiator and the water inlet of the second water-cooled radiator.

[0013] Preferably, the water-cooled cooling cycle circuit is further provided with a make-up water pipeline, and the make-up water pipeline is connected to an expansion tank.

[0014] Preferably, the intercooler radiator, the first water-cooled radiator and the second water-cooled radiator are of an integral structure.

[0015] Preferably, the diesel generator set cooling system further includes a fan blade and a motor for driving the fan blade to rotate.

[0016] On the other hand, the present invention provides an engineering vehicle, and the above-mentioned diesel generator set cooling system is installed on the engineering vehicle.

[0017] The present invention has at least the following beneficial effects:

[0018] In the present invention, the high-temperature air after the engine is supercharged is cooled by the intercooler radiator in the intercooling cycle circuit, and the cooled air returns to the intake system of the engine. The high-temperature circulating water of the engine is firstly cooled by the first water-cooled radiator in the water-cooled cooling cycle circuit. A part of the cooled water returns to the water inlet of the engine, and the other part enters the second water-cooled radiator for the second cooling. The cooled water enters the water inlet of the generator, and then flows back to the water inlet of the engine through the water outlet of the generator. Since the cooling of the engine and the cooling of the generator are integrated, and the engine is only cooled once while the generator is cooled twice, it not only meets the cooling requirements of the engine but also meets the cooling requirements of the generator, thereby being able to reduce the radiator structure size of the cooling system, improve the cooling and heat dissipation efficiency, and reduce the energy consumption of the cooling system. Description of the Drawings

[0019] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments recorded in the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a schematic structural diagram of a cooling system for a diesel generator set provided by an embodiment of the present invention. Specific embodiments

[0021] In order to enable those skilled in the art to better understand the technical solutions in the present application, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments.

[0022] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly disposed on the other element; when an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0023] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0024] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, the meaning of "a plurality" and "several" is two or more, unless otherwise specifically defined.

[0025] It should be noted that the structures, proportions, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the implementation conditions of this application. Therefore, they do not have substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the efficacy that this application can produce and the purpose that can be achieved, should still fall within the scope that the technical content disclosed in this application can cover.

[0026] The embodiments of the present invention are written in a progressive manner.

[0027] Please refer to Figure 1 , on the one hand, an embodiment of the present invention provides a cooling system for a diesel generator set, which is used to cool the diesel generator set. The diesel generator set includes an engine 1 and a generator 2. The cooling system of the diesel generator set includes an intercooling cooling circulation circuit and a water cooling circulation circuit; the intercooling cooling circulation circuit is provided with an intercooler radiator 3, the air inlet of the intercooler radiator 3 is connected to the supercharger of the engine 1, and the air outlet of the intercooler radiator 3 is connected to the intake system of the engine 1; the water cooling circulation circuit is provided with a first water cooler radiator 4 and a second water cooler radiator 5. The water inlet of the first water cooler radiator 4 is connected to the water outlet of the engine 1, the water outlet of the first water cooler radiator 4 is respectively connected to the water inlet of the second water cooler radiator 5 and the water inlet of the engine 1, the water outlet of the second water cooler radiator 5 is connected to the water inlet of the generator 2, and the water outlet of the generator 2 is connected to the water inlet of the engine 1.

[0028] In the embodiment of the present invention, the high-temperature air after the engine 1 is supercharged can be cooled by the intercooler radiator 3 in the intercooling cooling circulation circuit, and the cooled air returns to the intake system of the engine 1. The high-temperature circulating water of the engine 1 can be cooled for the first time by the first water cooler radiator 4 in the water cooling circulation circuit. Part of the cooled water returns to the water inlet of the engine 1, and the other part enters the second water cooler radiator 5 for the second cooling. The cooled water enters the water inlet of the generator 2, and then returns to the water inlet of the engine 1 through the water outlet of the generator 2. Since the engine cooling and the generator cooling are integrated, and the engine 1 is only cooled once, while the generator 2 is cooled twice, it not only meets the cooling requirements of the engine 1, but also meets the cooling requirements of the generator 2, thereby being able to reduce the radiator structure size of the cooling system, improve the cooling and heat dissipation efficiency, and reduce the energy consumption of the cooling system.

[0029] As a preferred embodiment of the present invention, a thermostat 6 is provided at the water outlet of the engine 1; when the valve of the thermostat 6 is opened, the water outlet of the engine 1 is connected to the water inlet of the first water-cooled radiator 4, and the water-cooled cooling circulation circuit enters the large-circulation cooling mode; when the valve of the thermostat 6 is closed, the water outlet of the engine 1 is connected to the water inlet of the generator 2, and the water-cooled cooling circulation circuit enters the small-circulation cooling mode.

[0030] Further, in the above embodiment, a water pump is provided at the water inlet of the engine 1 to provide power for the water-cooled cooling circulation circuit.

[0031] In the embodiment of the present invention, the water-cooled cooling circulation circuit has a large-circulation cooling mode and a small-circulation cooling mode. When the water temperature rises to the opening temperature of the thermostat 6, the valve of the thermostat 6 is opened, and the water outlet of the engine 1 is connected to the water inlet of the first water-cooled radiator 4. Under the action of the water pump, the high-temperature circulating water of the engine 1 undergoes the first-stage cooling through the first water-cooled radiator 4 in the water-cooled cooling circulation circuit. A part of the cooled water returns to the water inlet of the engine 1, and the other part enters the second water-cooled radiator 5 for the second-stage cooling. The cooled water enters the water inlet of the generator 2, and then returns to the water inlet of the engine 1 through the water outlet of the generator 2, forming a large-circulation cooling circuit; when the water temperature is lower than the opening temperature of the thermostat 6, it indicates that the current water temperature can meet the usage requirements of the diesel generator set. At this time, the valve of the thermostat 6 is closed, the water outlet of the engine 1 is connected to the water inlet of the generator 2, and the water that has not been cooled directly enters the generator 2, and then returns to the water inlet of the engine 1 through the water outlet of the generator 2, forming a small-circulation cooling circuit, further reducing energy consumption and improving utilization efficiency.

[0032] As a preferred embodiment of the present invention, a throttle valve 7 is provided between the water outlet of the first water-cooled radiator 4 and the water inlet of the engine 1.

[0033] Further, in the above embodiment, a check valve 8 is provided between the water outlet of the first water-cooled radiator 4 and the water inlet of the second water-cooled radiator 5.

[0034] In the embodiment of the present invention, a part of the water after the first-stage cooling by the first water-cooled radiator 4 returns to the water inlet of the engine 1 after being throttled by the throttle valve 7, and the other part enters the second water-cooled radiator 5 through the check valve 8 for the second-stage cooling. The throttle valve 7 can ensure that enough water participates in the second-stage cooling of the second water-cooled radiator 5 to meet the cooling requirements of the generator 2, and the check valve 8 can prevent the water from directly flowing back to the water inlet of the engine 1 when the pressure in the second water-cooled radiator 5 is relatively high.

[0035] As a preferred embodiment of the present invention, the water-cooled cooling circulation circuit is further provided with a makeup water pipeline, and the makeup water pipeline is connected to an expansion tank.

[0036] In the embodiments of the present invention, when the water in the water-cooling cooling circulation circuit is gradually consumed, the expansion tank can replenish water to the water-cooling cooling circulation circuit through the water replenishing pipeline, preventing the generation of cavitation due to the appearance of bubbles in the water-cooling cooling circulation circuit.

[0037] As a preferred embodiment of the present invention, the intercooler radiator 3, the first water-cooled radiator 4, and the second water-cooled radiator 5 are of an integrated structure.

[0038] In the embodiments of the present invention, the intercooler radiator 3, the first water-cooled radiator 4, and the second water-cooled radiator 5 are integrated into an integrated structure, further reducing the radiator structure size of the cooling system.

[0039] Furthermore, in the above embodiments, the diesel generator set cooling system further includes a fan blade and a motor for driving the fan blade to rotate.

[0040] In the embodiments of the present invention, the motor drives the fan blade to rotate, and through heat exchange with the cold air in the environment, the high-temperature air flowing into the intercooler radiator 3 and the high-temperature water flowing into the first water-cooled radiator 4 and the second water-cooled radiator 5 are cooled down, and after being reduced to a qualified temperature, they flow back to the engine 1 and the generator 2.

[0041] On the other hand, the embodiments of the present invention provide an engineering vehicle, on which the diesel generator set cooling system provided in any of the above embodiments is installed. Other parts of the engineering vehicle can refer to the prior art and will not be elaborated herein.

[0042] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A diesel generator set cooling system, characterized in that, It includes an intercooling cooling circuit and a water cooling circuit; The intercooling cooling circuit is provided with an intercooler radiator. The air inlet of the intercooler radiator is connected to the supercharger of the engine, and the air outlet of the intercooler radiator is connected to the intake system of the engine; The water cooling circuit is provided with a first water cooler radiator and a second water cooler radiator. The water inlet of the first water cooler radiator is connected to the water outlet of the engine. The water outlet of the first water cooler radiator is respectively connected to the water inlet of the second water cooler radiator and the water inlet of the engine. The water outlet of the second water cooler radiator is connected to the water inlet of the generator, and the water outlet of the generator is connected to the water inlet of the engine; A thermostat is provided at the water outlet of the engine; when the valve of the thermostat is opened, the water outlet of the engine is connected to the water inlet of the first water cooler radiator, and the water cooling circuit enters the large cycle cooling mode; when the valve of the thermostat is closed, the water outlet of the engine is connected to the water inlet of the generator, and the water cooling circuit enters the small cycle cooling mode.

2. The diesel generator set cooling system according to claim 1, characterized in that, A water pump is provided at the water inlet of the engine to provide power for the water cooling circuit.

3. The diesel generator set cooling system according to claim 1, characterized in that, A throttle valve is provided between the water outlet of the first water cooler radiator and the water inlet of the engine.

4. The diesel generator set cooling system according to claim 3, characterized in that, A one-way valve is provided between the water outlet of the first water cooler radiator and the water inlet of the second water cooler radiator.

5. The diesel generator set cooling system according to claim 1, characterized in that, The water cooling circuit is further provided with a make-up water pipeline, and the make-up water pipeline is connected with an expansion tank.

6. The diesel generator set cooling system according to any one of claims 1 to 5, characterized in that, The intercooler radiator, the first water cooler radiator and the second water cooler radiator are of an integral structure.

7. The diesel generator set cooling system according to claim 6, characterized in that, The diesel generator set cooling system further includes a fan blade and a motor for driving the fan blade to rotate.

8. An engineering vehicle, characterized in that, The diesel generator set cooling system as described in any one of claims 1 to 7 is installed on the engineering vehicle.

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