CN206513427U - A kind of micro- resistance pipeline fork - Google Patents

Abstract

The utility model provides a micro-resistance pipeline fork, which belongs to the technical field of engine exhaust gas pipeline structure. The pipeline fork includes an outlet flange, an exhaust main pipe, a partition, an exhaust branch pipe and an inlet flange, and the outlet flange is installed at the outlet end of the exhaust main pipe; the exhaust branch pipe is two and has a connecting end, Symmetrically installed at the inlet end of the exhaust main pipe and connected to the exhaust main pipe; the partition extends from the connection end of the two exhaust branch pipes to the outlet end of the exhaust main pipe; there are two inlet flanges, which are respectively installed on The inlet end of the two exhaust branch pipes. By applying the pipeline fork of the utility model to the exhaust system of the engine, the original two exhaust pipelines can be combined into one through the pipeline fork, effectively saving the number of exhaust system devices. The utility model has the advantages of low cost and low resistance, and the round flange connection and installation of the inlet and outlet are convenient, suitable for the exhaust system of the engine group, and can greatly reduce the cost of the engine group.

Description

A kind of micro-resistance pipeline fork

technical field

The utility model belongs to the technical field of engine pipeline structures, in particular to a micro-resistance pipeline fork.

Background technique

V-type high-power diesel engines are usually equipped with two superchargers, and the exhaust system of the unit is generally designed with two exhaust pipes. Each exhaust pipeline starts from the top of the supercharger, including bellows, pipes, waste heat boilers, mufflers and brackets. Two exhaust pipes of one unit have two waste heat boilers, two mufflers and other repeated sets of accessories, resulting in cumbersome structure and waste of cost.

Utility model content

In view of the above problems, the utility model provides a micro-resistance pipeline fork installed in the exhaust system of the unit. The pipeline fork of the utility model is used to combine the two exhaust pipelines of the two turbochargers of the diesel engine connected to the bellows. Then connect a pipe, a waste heat boiler, a muffler and a bracket corresponding to the requirements of the unit, turn the original two exhaust pipes into one, and solve the problems of cumbersome structure and cost waste of the original two exhaust pipes . The utility model purpose is achieved through the following technical solutions:

A kind of micro-resistance pipeline fork, described pipeline fork comprises outlet flange, exhaust main pipe, dividing plate, exhaust branch pipe and inlet flange, and described outlet flange is installed on the outlet end of exhaust main pipe; described exhaust branch pipe is Two and have connecting ends, symmetrically installed on the inlet end of the exhaust main pipe and communicated with the exhaust main pipe; the partition extends from the connecting end of the two exhaust branch pipes to the outlet end of the exhaust main pipe; the inlet flange There are two, which are respectively installed at the inlet ends of the two exhaust branch pipes.

As a specific embodiment of the micro-resistance pipeline fork of the utility model, the exhaust main pipe is cylindrical.

As a specific embodiment of the micro-resistance pipeline fork of the utility model, the exhaust branch pipe is cylindrical, and the two exhaust branch pipes have the same structure.

As a specific embodiment of the micro-resistance pipeline fork of the utility model, the outlet flange and the inlet flange are both round flanges.

As a specific embodiment of the micro-resistance pipeline fork of the present utility model, the flow cross-sectional area of the outlet flange is 110%-135% of the sum of the flow cross-sectional areas of the two inlet flanges, and is more preferably 115%.

As a specific embodiment of the micro-resistance pipeline fork of the utility model, the included angle between the partition plate and the center line of the exhaust branch pipe is less than 15°.

As a specific embodiment of a micro-resistance pipe fork of the utility model, the air flow section formed by the exhaust branch pipe gradually transitions from a circular shape at the entrance to a semicircle at the exit, and the total outlet airflow of the two exhaust branch pipes The cross section is increased by 10% to 35% compared with the total inlet airflow cross section, more preferably 15%.

The beneficial effects of the utility model:

1. Apply the pipeline fork of the utility model to the exhaust system of the engine, combine the two exhaust pipelines connected to the corrugated pipes in the sky circle of the two superchargers through the pipeline fork, and then connect a pipeline corresponding to the requirements of the unit 1, a waste heat boiler, a muffler and a bracket, so that it becomes an exhaust pipe, which solves the structural cumbersomeness and cost waste of installing two waste heat boilers, two mufflers and their accessories for the original two exhaust pipes.

2. The angle formed between the separator of the utility model and the center line of the exhaust branch pipe is less than 15°, the mutual interference of the airflow in the two exhaust branch pipes is small, the confluence of the two airflows and the loss of kinetic energy are small, and the two exhaust pipes The air flow of the branch pipes can also play a better ejection effect; at the same time, the air flow flowing out of the exhaust branch pipe collides with the wall of the exhaust main pipe without vortex flow, and the loss of air flow disturbance is small. Therefore, the airflow resistance of the pipe fork is reduced, which is beneficial to the reduction of the back pressure of the engine and the discharge of gas.

3. The utility model limits the flow cross-sectional area of the outlet flange to 110% to 135% of the sum of the flow cross-sectional areas of the two inlet flanges, which can reduce pressure fluctuations in the main exhaust pipe and reduce gas flow loss. The pressure is low, which is beneficial to the combined emission of engine gas and the intake of fresh air, the fuel combustion is sufficient, and the engine power can be fully realized; thereby reducing the fuel consumption rate of the engine and improving its economy, the fuel combustion is sufficient and the engine discharge meets better environmental protection requirements.

4. The pipe fork of the utility model has low cost and low resistance, and the round flange connection and installation of the inlet and outlet are convenient. It is suitable for the exhaust system of the unit and can greatly reduce the cost of the unit.

Description of drawings

Fig. 1 is the front view of the utility model pipeline fork.

Fig. 2 is a sectional view of the utility model pipeline fork.

Fig. 3 is the left view of the pipeline fork of the utility model.

Fig. 4 is a three-dimensional view of the pipeline fork of the utility model.

Fig. 5 is a schematic diagram of the installation structure of the utility model pipeline fork.

Reference signs: 1 - outlet flange, 2 - exhaust main pipe, 3 - partition, 4 - exhaust branch pipe, 5 - inlet flange, 6 - angle α between the partition and the center line of the exhaust branch pipe.

detailed description

Below in conjunction with accompanying drawing, the utility model is described in detail.

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

A micro-resistance pipeline fork, as shown in Figures 1 to 4, the pipeline fork includes an outlet flange 1, an exhaust manifold 2, a partition 3, an exhaust branch pipe 4 and an inlet flange 5, and the outlet flange 1 is installed on the outlet end of the exhaust main pipe 2; the exhaust branch pipe 4 is two and has a connecting end, which is symmetrically installed on the inlet end of the exhaust main pipe 2 and connected with the exhaust main pipe 2; The connecting end of the exhaust branch pipe 4 extends to the outlet end of the exhaust main pipe 2; there are two inlet flanges 5, which are installed on the inlet ends of the two exhaust branch pipes 4 respectively. The two exhaust branch pipes 4 of the utility model realize the convergence of the pipelines of the engine exhaust system, and merge into one pipeline through the exhaust main pipe 2. The function of the partition is to divide the airflow of the two exhaust branch pipes 4, Prevent them from interfering with each other and further reduce pipeline resistance.

The utility model's micro-resistance pipeline fork adopts a welding structure formed by a thin plate. According to the structure diagram of the utility model's pipeline fork, two exhaust branch pipes 4 are symmetrically welded and installed on both sides of the exhaust main pipe 2, and then two exhaust branch pipes 4 The inlet flange 5 is installed at the inlet end of the exhaust pipe, and the outlet flange 1 is installed at the outlet end of the exhaust main pipe 2 to complete the welding and fixed installation of the pipeline fork of the present utility model.

In order to better conform to the actual exhaust system pipeline, the utility model sets the exhaust main pipe 2 and the two exhaust branch pipes 4 as cylindrical, and further, the two exhaust branch pipes 4 have the same structure and are symmetrical Installed in the inlet section of the exhaust main pipe 2 and connected to the exhaust main pipe 2.

Simultaneously, in order to facilitate the installation of the micro-resistance pipeline fork and exhaust system management of the utility model, the outlet flange 1 and the inlet flange 5 of the utility model are designed to be round flanges conforming to the pipeline structure. Further, the flow cross-sectional area of the outlet flange 1 is 110%-135% of the sum of the flow cross-sectional areas of the two inlet flanges 5, more preferably 115%. Its purpose is to reduce the pressure fluctuation in the exhaust manifold 2, reduce the gas flow loss, and reduce the corresponding engine back pressure, which is beneficial to the combined exhaust of the engine gas and the intake of fresh air, so that the fuel can be fully burned and the engine power can be fully realized; thereby reducing the fuel consumption of the engine The efficiency improves its economy, and the fuel combustion is sufficient for engine emissions to meet better environmental protection requirements.

As a specific embodiment of a micro-resistance pipeline fork of the present invention, the angle α6 between the partition plate 3 and the center line of the exhaust branch pipe is less than 15°. Specifically, the included angle α6 is the included angle between the extension line of the separator and the extension line of the centerline of the exhaust branch pipe, and may be further preferably 12° or 8°. If the included angle α6 is set to be less than 15°, the mutual interference between the airflows of the two exhaust branch pipes 4 is small, the confluence of the two airflows and the loss of kinetic energy are small, and the airflows of the two exhaust branch pipes 4 can also play a better role in each other. Ejection effect; at the same time, the airflow out of the exhaust branch pipe 4 collides with the tank wall of the exhaust main pipe 1 without vortex, and the loss of airflow disturbance is small. Therefore, the airflow resistance of the pipe fork is reduced, which is beneficial to the reduction of the back pressure of the engine and the discharge of gas.

As a specific embodiment of a micro-resistance pipeline fork of the utility model, the air flow section formed by the exhaust branch pipe 4 gradually transitions from a circular shape at the inlet to a semicircular shape at the outlet, and the total of the two exhaust branch pipes 4 The cross-section of the outlet airflow is increased by 10-35% compared with the total inlet airflow cross-section, more preferably by 15%. Its purpose is to reduce the pressure fluctuation in the exhaust manifold 2, reduce the gas flow loss, and reduce the corresponding engine back pressure, which is beneficial to the combined exhaust of the engine gas and the intake of fresh air, so that the fuel can be fully burned and the engine power can be fully realized; thereby reducing the fuel consumption of the engine The efficiency improves its economy, and the fuel combustion is sufficient for engine emissions to meet better environmental protection requirements.

The application and installation diagram of the utility model micro-resistance pipeline fork in the engine exhaust system is shown in Fig. 5 . Connect the two exhaust branch pipes 4 with the two exhaust pipes connected to the bellows in the engine exhaust system, and fasten them through the inlet flange 5; connect the exhaust main pipe 2 to a pipe required by the unit, A waste heat boiler, a muffler and a bracket are fastened through the outlet flange 1. In this way, the original two exhaust pipes are changed into one pipe, which solves the structural burden and cost waste that the original two exhaust pipes need to install two waste heat boilers, two mufflers and their accessories.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (9)

1. A kind of micro-resistance pipeline fork, it is characterized in that, described pipeline fork comprises outlet flange, exhaust main pipe, dividing plate, exhaust branch pipe and inlet flange, and described outlet flange is installed on exhaust main pipe outlet end; There are two exhaust branch pipes with connecting ends, which are symmetrically installed on the inlet end of the exhaust main pipe and communicated with the exhaust main pipe; the partition extends from the connecting ends of the two exhaust branch pipes to the outlet end of the exhaust main pipe ; There are two inlet flanges, which are respectively installed at the inlet ends of the two exhaust branch pipes. 2. A kind of micro-resistance pipeline fork as claimed in claim 1, characterized in that, the exhaust manifold is cylindrical. 3. A kind of micro-resistance pipeline fork as claimed in claim 1, characterized in that, the exhaust branch pipe is cylindrical, and the structures of the two exhaust branch pipes are the same. 4. A kind of micro-resistance pipeline fork as claimed in claim 1, characterized in that, both the outlet flange and the inlet flange are round flanges. 5 . The micro-resistance pipeline fork according to claim 4 , wherein the cross-sectional area of the outlet flange is 110% to 135% of the sum of the cross-sectional areas of the two inlet flanges. 6 . The micro-resistance pipeline fork as claimed in claim 5 , wherein the flow cross-sectional area of the outlet flange is 115% of the sum of the flow cross-sectional areas of the two inlet flanges. 7. A micro-resistance pipeline fork as claimed in claim 1, characterized in that the angle between the partition and the center line of the exhaust branch pipe is less than 15°. 8. A micro-resistance pipeline fork as claimed in any one of claims 1, 2, and 3, wherein the air flow section formed by the exhaust branch pipe gradually transitions from a circular shape at the inlet to a semicircular shape at the outlet , the total outlet airflow section of the two exhaust branch pipes is increased by 10% to 35% compared with the total inlet airflow section. 9. A kind of micro-resistance pipeline fork as claimed in claim 8, characterized in that, the total outlet airflow section of the two exhaust branch pipes is 15% larger than the total inlet airflow section.