An explosion-proof engine exhaust manifold cooling system resistant to thermal stress cracking

Abstract

The utility model discloses an anti -thermal stress cracking's explosion -proof engine exhaust manifold cooling system relates to the technical field of explosion -proof engine for coal mine. Including explosion -proof engine body, be provided with exhaust manifold body on explosion -proof engine body, the position of exhaust manifold body outside is provided with supercharger, the one side of explosion -proof engine body front is provided with external water pump, the position of explosion -proof engine body outside is provided with radiator, the one side of supercharger is provided with exhaust bellows, and the other side is provided with air cleaner, and the exhaust bellows is provided with exhaust treatment box in intercommunication. The utility model discloses through the setting of exhaust manifold body, waterway inner circulating component, waterway outer circulating component and air pipe line component to realize the anti -thermal stress cracking of explosion -proof engine exhaust manifold, and the improved explosion -proof engine does not appear the condition of exhaust manifold cracking again, saves the economic cost's time also guaranteed the normal production of coal mine.

Description

Technical Field

[0001] This utility model relates to the field of explosion-proof engine technology for coal mines, specifically to an explosion-proof engine exhaust manifold cooling system resistant to thermal stress cracking. Background Technology

[0002] Exhaust manifold cooling in explosion-proof engines refers to a cooling technology applied to the exhaust manifold. The main purpose of this technology is to reduce the temperature of the exhaust manifold, thereby reducing heat buildup, improving safety, and preventing potential explosion risks.

[0003] Our subsidiary currently supplies approximately 50 Caterpillar explosion-proof engines to large coal mines around Inner Mongolia. About 30 of these engines' exhaust manifolds have been damaged due to thermal stress cracking, resulting in direct economic losses of approximately 240,000 yuan and indirect costs of other damaged parts and repairs of approximately 100,000 yuan. Furthermore, the downtime caused by the damaged exhaust manifolds has severely impacted the normal production of these coal mines. In light of these serious consequences, there is an urgent need to develop a thermal stress crack-resistant cooling system for the exhaust manifolds of explosion-proof engines. Therefore, this utility model is proposed. Utility Model Content

[0004] The purpose of this invention is to provide an explosion-proof engine exhaust manifold cooling system resistant to thermal stress cracking, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a thermal stress crack-resistant explosion-proof engine exhaust manifold cooling system, comprising an explosion-proof engine body, an exhaust manifold body mounted on the explosion-proof engine body, a turbocharger mounted on the outer side of the exhaust manifold body, an external water pump mounted on one side of the front of the explosion-proof engine body, a radiator mounted on the outer side of the explosion-proof engine body, an exhaust bellows mounted on one side of the turbocharger and an air filter mounted on the other side, an exhaust gas treatment box connected to the exhaust bellows, an exhaust port on the top left side of the exhaust manifold body, an upper water outlet on the top right side of the exhaust manifold body, a lower water inlet on the bottom left side of the exhaust manifold body, and an internal water circulation component, an external water circulation component, and an air piping component mounted on the explosion-proof engine body. It should be noted that, within the existing space, the height and thickness of the exhaust manifold body 2 have been increased, allowing for more cooling water within the exhaust manifold body 2, thus better cooling the exhaust manifold body 2.

[0006] Preferably, the internal water circulation component includes a pipe connecting the outlet of the radiator to the inlet of the built-in water pump on the explosion-proof engine body, and a pipe connecting the outlet of the thermostat on the explosion-proof engine body to one of the return ports of the radiator.

[0007] Preferably, the external water circulation component includes a hose connecting the outlet of the radiator and the inlet of the external water pump, and the outlet of the external water pump and the lower inlet of the exhaust manifold are connected by a hose.

[0008] Preferably, the upper outlet of the exhaust manifold is connected to the inlet of the booster via a flexible hose, the outlet of the booster is connected to the inlet of the exhaust bellows via a flexible hose, and the outlet of the exhaust bellows is connected to another return outlet of the radiator via a flexible hose.

[0009] Preferably, the air piping assembly includes a silicone hose connecting an air filter to the air inlet of a turbocharger. Air drawn in by the air filter enters the turbocharger through the silicone hose. The air outlet of the turbocharger is connected to the air inlet of a radiator by a pipe. After the radiator is cooled internally, its air outlet is connected to the air inlet of the explosion-proof engine body through a pipe.

[0010] Preferably, the explosion-proof engine body is connected to the exhaust manifold body by a pipe, the exhaust manifold body is connected to the turbocharger by a pipe, the turbocharger is connected to the exhaust bellows by a pipe, and the exhaust bellows is connected to the exhaust gas treatment box by a pipe.

[0011] Preferably, the thermostat on the explosion-proof engine body is equipped with a plug to ensure that the explosion-proof engine body always uses large-circulation cooling to maintain a lower engine exhaust temperature. An additional water pipe is connected between the radiator's water tank and the built-in water pump on the explosion-proof engine body. The additional water pipe serves to continuously and adequately supply water to both the built-in and external water pumps on the explosion-proof engine body.

[0012] Compared with the prior art, the beneficial effects of this utility model are: This explosion-proof engine exhaust manifold cooling system, which is resistant to thermal stress cracking, achieves thermal stress cracking resistance in the exhaust manifold through the configuration of the exhaust manifold body, internal water circulation component, external water circulation component, and air pipeline component. Moreover, the improved explosion-proof engine has not experienced exhaust manifold cracking again, saving economic costs while ensuring normal production in the coal mine. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a diagram of the circulation system of this utility model; Figure 3 This is a front view of the exhaust manifold of this utility model.

[0014] In the diagram: 1. Explosion-proof engine body; 2. Exhaust manifold body; 3. Turbocharger; 4. External water pump; 5. Radiator; 6. Exhaust bellows; 7. Air filter; 8. Exhaust gas treatment box. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] During the use of explosion-proof engines, an exhaust manifold cooling system is required. The cooling system provided by this utility model increases the height and thickness of the exhaust manifold body 2 within the existing space, ensuring that there is more cooling water in the exhaust manifold body 2, thus better cooling the exhaust manifold body 2. The built-in water pump and external water pump 4 on the Caterpillar explosion-proof engine body 1 continuously provide sufficient water, achieving a good cooling effect. Before using this system, it is necessary to perform preparatory work such as inspection to ensure the normal operation of the device.

[0017] like Figures 1-3 As shown, this utility model provides a technical solution: a thermal stress crack resistant explosion-proof engine exhaust manifold cooling system, including an explosion-proof engine body 1, an exhaust manifold body 2 disposed on the explosion-proof engine body 1, a turbocharger 3 disposed on the outer side of the exhaust manifold body 2, an external water pump 4 disposed on one side of the front of the explosion-proof engine body 1, a radiator 5 disposed on the outer side of the explosion-proof engine body 1, an exhaust bellows 6 disposed on one side of the turbocharger 3, an air filter 7 disposed on the other side, an exhaust gas treatment box 8 connected to the exhaust bellows 6, an exhaust port opened on the top left side of the exhaust manifold body 2, an upper water outlet disposed on the top right side of the exhaust manifold body 2, a lower water inlet disposed on the bottom left side of the exhaust manifold body 2, and an internal water circulation component, an external water circulation component, and an air pipeline component disposed on the explosion-proof engine body 1.

[0018] In this embodiment, the internal water circulation component includes a pipe connecting the outlet of the radiator 5 to the inlet of the built-in water pump on the explosion-proof engine body 1, and a pipe connecting the outlet of the thermostat on the explosion-proof engine body 1 to one return port of the radiator 5. The external water circulation component includes a hose connecting the outlet of the radiator 5 to the inlet of the external water pump 4, a hose connecting the outlet of the external water pump 4 to the lower inlet of the exhaust manifold 2, a hose connecting the upper outlet of the exhaust manifold 2 to the inlet of the turbocharger 3, a hose connecting the outlet of the turbocharger 3 to the inlet of the exhaust bellows 6, and a hose connecting the outlet of the exhaust bellows 6 to another return port of the radiator 5.

[0019] In this embodiment, the air piping assembly includes a silicone hose connecting the air filter 7 to the air inlet of the turbocharger 3. Air drawn in by the air filter 7 enters the turbocharger 3 through the silicone hose. The air outlet of the turbocharger 3 is connected to the air inlet of the radiator 5 by a pipe. After the radiator 5 is cooled internally, its air outlet is connected to the air inlet of the explosion-proof engine body 1 by a pipe. The explosion-proof engine body 1 is connected to the exhaust manifold 2 by a pipe. The exhaust manifold 2 is connected to the turbocharger 3 by a pipe. The turbocharger 3 is connected to the exhaust bellows 6 by a pipe. The exhaust bellows 6 is connected to the exhaust gas treatment box 8 by a pipe.

[0020] In this embodiment, a plug is installed inside the thermostat on the explosion-proof engine body 1 to ensure that the explosion-proof engine body 1 always uses large-circulation cooling to maintain a lower engine exhaust temperature. A water pipe is connected between the water tank of the radiator 5 and the built-in water pump on the explosion-proof engine body 1. The water pipe ensures a continuous and sufficient water supply to the built-in water pump and the external water pump 4 on the explosion-proof engine body 1. Through the configuration of the exhaust manifold body 2, the internal water circulation component, the external water circulation component, and the air pipeline component, the thermal stress cracking resistance of the explosion-proof engine exhaust manifold is achieved. Moreover, the improved explosion-proof engine has not experienced exhaust manifold cracking again, saving economic costs while ensuring normal production in the coal mine.

[0021] When the system is in operation, the outlet of the radiator 5 is connected to the inlet of the built-in water pump on the explosion-proof engine body 1 and the inlet of the external water pump 4. The thermostat on the explosion-proof engine body 1 is connected to one of the return ports of the radiator 5, forming an internal circulation cooling water loop for the explosion-proof engine body 1. The outlet of the external water pump 4 is connected to the lower inlet of the exhaust manifold 2, the upper outlet of the exhaust manifold 2 is connected to the inlet of the turbocharger 3, the outlet of the turbocharger 3 is connected to the inlet of the exhaust bellows 6, and the outlet of the exhaust bellows 6 is connected to another return port of the radiator 5, forming an external circulation cooling water loop. This constitutes an internal and external cooling system for the explosion-proof engine. The air filter 7 is connected to the air inlet of the turbocharger 3. After being pressurized by the turbocharger 3, it is connected to the air inlet of the radiator 5. After being cooled by the radiator 5, it is connected to the air inlet of the explosion-proof engine body 1 from the air outlet of the radiator 5. The exhaust manifold 2 is fixed on the air outlet of the explosion-proof engine body 1. The air outlet of the exhaust manifold 2 is connected to the air inlet of the turbocharger 3. The exhaust port of the turbocharger 3 is connected to one end of the exhaust bellows 6. The other end of the exhaust bellows 6 is connected to the exhaust gas treatment box 8, thus forming a complete air cooling system.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended embodiments and their equivalents.

Claims

1. A thermal stress crack resistant explosion-proof engine exhaust manifold cooling system, comprising an explosion-proof engine body (1), characterized in that: An exhaust manifold (2) is provided on the explosion-proof engine body (1). A turbocharger (3) is provided on the outside of the exhaust manifold (2). An external water pump (4) is provided on one side of the front of the explosion-proof engine body (1). A radiator (5) is provided on the outside of the explosion-proof engine body (1). An exhaust bellows (6) is provided on one side of the turbocharger (3), and an air filter (7) is provided on the other side. An exhaust gas treatment box (8) is connected to the exhaust bellows (6). An exhaust port is provided on the top left side of the exhaust manifold (2). An upper water outlet is provided on the top right side of the exhaust manifold (2). A lower water inlet is provided on the bottom left side of the exhaust manifold (2). An internal water circulation component, an external water circulation component, and an air pipeline component are provided on the explosion-proof engine body (1).

2. The explosion-proof engine exhaust manifold cooling system resistant to thermal stress cracking according to claim 1, characterized in that: The water circulation assembly includes a pipe connecting the outlet of the radiator (5) to the inlet of the built-in water pump on the explosion-proof engine body (1), and a pipe connecting the outlet of the thermostat on the explosion-proof engine body (1) to one of the return ports of the radiator (5).

3. The explosion-proof engine exhaust manifold cooling system resistant to thermal stress cracking according to claim 1, characterized in that: The external water circulation assembly includes a hose connecting the outlet of the radiator (5) to the inlet of the external water pump (4), and the outlet of the external water pump (4) to the lower inlet of the exhaust manifold (2) is connected by a hose.

4. The explosion-proof engine exhaust manifold cooling system resistant to thermal stress cracking according to claim 3, characterized in that: The upper outlet of the exhaust manifold (2) is connected to the inlet of the booster (3) by a hose, the outlet of the booster (3) is connected to the inlet of the exhaust bellows (6) by a hose, and the outlet of the exhaust bellows (6) is connected to another return port of the radiator (5) by a hose.

5. The explosion-proof engine exhaust manifold cooling system resistant to thermal stress cracking according to claim 1, characterized in that: The air piping assembly includes a silicone hose connecting the air filter (7) to the air inlet of the turbocharger (3). The air drawn in by the air filter (7) enters the turbocharger (3) through the silicone hose. The air outlet of the turbocharger (3) is connected to the air inlet of the radiator (5) by a pipe. After the radiator (5) is cooled inside, its air outlet is connected to the air inlet of the explosion-proof engine body (1) through a pipe.

6. The explosion-proof engine exhaust manifold cooling system resistant to thermal stress cracking according to claim 5, characterized in that: The explosion-proof engine body (1) is connected to the exhaust manifold body (2) by a pipe, the exhaust manifold body (2) is connected to the turbocharger (3) by a pipe, the turbocharger (3) is connected to the exhaust bellows (6) by a pipe, and the exhaust bellows (6) is connected to the exhaust gas treatment box (8) by a pipe.

7. The explosion-proof engine exhaust manifold cooling system resistant to thermal stress cracking according to claim 1, characterized in that: The thermostat on the explosion-proof engine body (1) is fitted with a plug, which enables the explosion-proof engine body (1) to continuously use large-circulation cooling to ensure a lower engine exhaust temperature. The water tank of the radiator (5) is connected to the built-in water pump on the explosion-proof engine body (1) by an additional water pipe, which serves to continuously and adequately supply water to the built-in water pump and the external water pump (4) on the explosion-proof engine body (1).

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