A supercharger blade protection device for stabilizing intake air flow

Abstract

The utility model discloses a supercharger blade protection device for stabilizing the intake air flow, comprising: a pressure stabilizing chamber, an opening is provided at one end of the pressure stabilizing chamber, an intake pipe is fixedly connected to the middle of the other end of the pressure stabilizing chamber, an expansion tube is fixedly connected to the middle of the inner wall of the pressure stabilizing chamber, an outlet pipe is fixedly connected to the bottom of the pressure stabilizing chamber, an end cover is provided at the open end of the pressure stabilizing chamber, bolts are provided at the side end of the end cover, a plurality of springs are fixedly connected to one end of the end cover, a buffer block is fixedly connected to the other end of the spring, a groove is provided in the middle of the buffer block, a filter element is installed at one end of the buffer block, and a sealing frame is fixedly connected to the inner wall of the filter element. The flow velocity of the airflow after entering the device can be reduced, and the contact surface of the airflow with the device when it hits the device can be reduced, thereby reducing the vibration generated when the device is working and reducing the noise.

Description

Technical Field

[0001] The utility model relates to the technical field of engine bench testing, in particular to a supercharger blade protection device for stabilizing the intake air flow. Background Art

[0002] Performance tests, calibration tests and emission tests in engine bench tests basically require monitoring of the intake flow rate parameter. However, the traditional installation method of the intake pipe often causes large fluctuations in the intake flow rate. Taking the maximum engine flow rate of 1050kg / h as an example, the maximum fluctuation range can reach ±70kg / h. With the continuous improvement of test requirements, such a large range of data fluctuations can no longer meet the test needs. Therefore, installing a pressure stabilizing device between the air flow meter and the supercharger has become a basic requirement for most tests.

[0003] Patent application number "CN202223437560.2", patent name "A supercharger blade protection device for stabilizing intake air flow", includes a cylinder; by adopting cavity pressure stabilization technology, it is installed between the supercharger compressor port and the air flow meter. The air entering from the air flow meter passes through a cavity of a certain volume to achieve the effect of stabilizing the airflow.

[0004] After the airflow in the above device enters the cavity through the air inlet pipe, the flow rate decreases slowly, and the airflow collides with the tightening block, which is only buffered by the spring, and the buffering effect is limited. If the airflow rate is too fast during the process, the device will vibrate and generate noise, affecting the normal operation of the device. Utility Model Content

[0005] The utility model aims to provide a supercharger blade protection device for stabilizing the intake airflow, which can reduce the flow velocity of the airflow after entering the device and reduce the contact surface of the airflow with the device when it hits the device, thereby reducing the vibration generated when the device is working and reducing the noise.

[0006] In order to achieve the above-mentioned purpose, a supercharger blade protection device for stabilizing the intake air flow is provided, comprising: a pressure stabilizing chamber, an opening is provided at one end of the pressure stabilizing chamber, an intake pipe is fixedly connected to the middle of the other end of the pressure stabilizing chamber, and the intake pipe is communicated with the pressure stabilizing chamber, an expansion pipe is fixedly connected to the middle of the inner wall of the pressure stabilizing chamber, and the expansion pipe is far away from the opening of the pressure stabilizing chamber, the intake pipe is communicated with one end of the expansion pipe, an outlet pipe is fixedly connected to the bottom of the pressure stabilizing chamber, and the outlet pipe is communicated with the pressure stabilizing chamber, an end cover is provided at the open end of the pressure stabilizing chamber, bolts are provided at the side ends of the end cover, and the bolts are far away from the pressure stabilizing chamber, and the bolts One end of the end cap and the pressure stabilizing chamber respectively passes through the end cap, one end of the end cap is fixedly connected with a plurality of springs, and the springs are far away from the bolts, the other end of the spring is fixedly connected with a buffer block, and the outer end of the buffer block is slidably connected with the inner wall of the end cap, the buffer block extends into the pressure stabilizing chamber and is slidably connected with the inner wall of the pressure stabilizing chamber, the middle part of the buffer block is provided with a groove, and the groove is semicircular, one end of the buffer block is installed with a filter element, and the filter element is located in the middle of the pressure stabilizing chamber, the inner wall of the filter element is fixedly connected with a sealing frame, and the sealing frame is far away from the buffer block, and the expansion tube is located in the middle of the sealing frame and is slidably connected with the sealing frame. It can reduce the flow rate of the airflow after entering the device, and reduce the contact surface of the airflow with the device when it hits the device, thereby reducing the vibration generated when the device is working and reducing the noise.

[0007] According to the supercharger blade protection device for stabilizing intake air flow, the outer ends of the intake pipe and the outlet pipe are respectively fixedly connected with flanges, and the intake pipe and the outlet pipe are respectively located in the middle of the flanges, and the flanges are far away from the pressure stabilizing chamber, so that the device is conveniently connected to the gas flow meter and the supercharger.

[0008] According to the supercharger blade protection device for stabilizing intake air flow, an annular connecting groove is provided at one end of the buffer block, and the connecting groove faces the filter element, the groove of the buffer block is located in the middle of the connecting groove, one end of the filter element is fixedly connected with a connecting plate, and the connecting plate extends into the connecting groove and is slidably connected to the connecting groove, and a screw hole is provided at the outer end of the buffer block, and the screw hole passes through the connecting plate, so as to install the filter element and facilitate the removal of the filter element.

[0009] According to the supercharger blade protection device for stabilizing the intake air flow, two limit slots are provided at one end of the buffer block, and the limit slots are on the same side as the connecting slot and are symmetrically distributed at the two ends of the outer side of the connecting slot, the limit slots are connected to the connecting slot, the two ends of the outer side of the connecting plate are respectively fixedly connected to the limit blocks, and the limit blocks are located in the limit slots and are slidably connected to the side walls of the limit slots, which can play a guiding role and facilitate installation.

[0010] According to the supercharger blade protection device for stabilizing intake air flow, a rubber ring is fixedly mounted on the inner wall of the sealing frame, and the inner wall of the rubber ring is slidably connected to the outer end of the expansion tube, thereby increasing the sealing performance between the sealing frame and the expansion tube and avoiding affecting the filtering effect of the filter element on the air flow.

[0011] According to the supercharger blade protection device for stabilizing intake air flow, the expansion tube is trumpet-shaped, and the end of the expansion tube with a larger inner diameter is far away from the intake pipe, so as to gradually increase the inner diameter of the expansion tube and reduce the gas flow rate.

[0012] The beneficial effects of the utility model are as follows: the flow rate of the airflow entering the expansion tube is gradually reduced by gradually increasing the inner diameter of the expansion tube, and the semicircular groove in the middle of the buffer block is utilized to reduce the contact area between the gas and the surface of the buffer block when the gas hits the buffer block, and the spring is used for buffering to reduce the vibration generated when the device is working.

[0013] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0015] Figure 1 This is a three-dimensional structural diagram of a supercharger blade protection device for stabilizing the intake air flow rate according to the utility model;

[0016] Figure 2 This is a cross-sectional structural diagram of a supercharger blade protection device for stabilizing intake air flow according to the utility model;

[0017] Figure 3 It is a three-dimensional structural diagram of an end cover of a supercharger blade protection device for stabilizing the intake air flow of the utility model;

[0018] Figure 4 This is a cross-sectional structural diagram of a filter element of a supercharger blade protection device for stabilizing intake air flow according to the utility model;

[0019] Figure 5 for Figure 3 Enlarged structural diagram of point A in the middle.

[0020] Legend:

[0021] 1. Flange; 2. Inlet pipe; 3. Pressure stabilizing chamber; 4. Outlet pipe; 5. Bolts; 6. End cover; 7. Expansion tube; 8. Filter element; 9. Spring; 10. Buffer block; 11. Screw hole; 12. Sealing frame; 13. Connecting plate; 14. Limit block; 15. Limit groove; 16. Connecting groove. DETAILED DESCRIPTION

[0022] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0023] Reference Figure 1-5 The utility model embodiment provides a supercharger blade protection device for stabilizing the intake air flow, which includes: a pressure stabilizing chamber 3, one end of the pressure stabilizing chamber 3 is provided with an opening, the other end of the pressure stabilizing chamber 3 is fixedly connected to an intake pipe 2 in the middle, and the intake pipe 2 is communicated with the pressure stabilizing chamber 3, an expansion pipe 7 is fixedly connected to the middle of the inner wall of the pressure stabilizing chamber 3, and the expansion pipe 7 is far away from the opening of the pressure stabilizing chamber 3, the intake pipe 2 is communicated with one end of the expansion pipe 7, the bottom of the pressure stabilizing chamber 3 is fixedly connected to an outlet pipe 4, and the outlet pipe 4 is communicated with the pressure stabilizing chamber 3, the open end of the pressure stabilizing chamber 3 is provided with an end cover 6, the side end of the end cover 6 is provided with a bolt 5, and the bolt 5 is far away from the pressure stabilizing chamber 3, and one end of the bolt 5 penetrates The end cover 6 is connected to the pressure stabilizing chamber 3, and one end of the end cover 6 is fixedly connected with a plurality of springs 9, and the springs 9 are away from the bolts 5. The other end of the spring 9 is fixedly connected with a buffer block 10, and the outer end of the buffer block 10 is slidably connected to the inner wall of the end cover 6. The buffer block 10 extends into the pressure stabilizing chamber 3 and is slidably connected to the inner wall of the pressure stabilizing chamber 3. A groove is provided in the middle of the buffer block 10, and the groove is semicircular. A filter element 8 is installed at one end of the buffer block 10, and the filter element 8 is located in the middle of the pressure stabilizing chamber 3. A sealing frame 12 is fixedly connected to the inner wall of the filter element 8, and the sealing frame 12 is away from the buffer block 10. The expansion tube 7 is located in the middle of the sealing frame 12 and is slidably connected to the sealing frame 12.

[0024] The outer ends of the air inlet pipe 2 and the air outlet pipe 4 are respectively fixedly connected with flanges 1 , and the air inlet pipe 2 and the air outlet pipe 4 are respectively located in the middle of the flanges 1 , and the flanges 1 are far away from the pressure stabilizing chamber 3 .

[0025] An annular connecting groove 16 is provided at one end of the buffer block 10, and the connecting groove 16 faces the filter element 8. The groove of the buffer block 10 is located in the middle of the connecting groove 16. A connecting plate 13 is fixedly connected to one end of the filter element 8, and the connecting plate 13 extends into the connecting groove 16 and is slidably connected to the connecting groove 16. A screw hole 11 is provided at the outer end of the buffer block 10, and the screw hole 11 passes through the connecting plate 13.

[0026] Two limiting grooves 15 are provided at one end of the buffer block 10, and the limiting grooves 15 are on the same side ends as the connecting groove 16 and are symmetrically distributed at the two outer ends of the connecting groove 16. The limiting grooves 15 are connected to the connecting groove 16, and the two outer ends of the connecting plate 13 are respectively fixedly connected to the limiting blocks 14, and the limiting blocks 14 are located in the limiting grooves 15 and are slidably connected to the side walls of the limiting grooves 15.

[0027] A rubber ring is fixedly mounted on the inner wall of the sealing frame 12 , and the inner wall of the rubber ring is slidably connected to the outer end of the expansion tube 7 .

[0028] The expansion tube 7 is trumpet-shaped, and the end of the expansion tube 7 with a larger inner diameter is far away from the air inlet pipe 2 .

[0029] Working principle: The gas enters the expansion tube 7 through the intake pipe 2. The gradually increasing inner diameter of the expansion tube 7 gradually reduces the velocity of the airflow entering the expansion tube 7 and enters the pressure stabilizing chamber 3. The airflow hits the surface of the buffer block 10 due to inertia. The semicircular groove in the middle of the buffer block 10 can reduce the contact area between the gas and the surface of the buffer block 10 when the gas hits the buffer block 10, and cooperates with the spring 9 for buffering. The filter element 8 filters the impurities in the airflow, and then the airflow enters the supercharger through the outlet pipe 4.

[0030] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A supercharger blade protection device for stabilizing intake air flow, characterized in that: include: A pressure stabilizing chamber (3), one end of the pressure stabilizing chamber (3) is provided with an opening, the other end of the pressure stabilizing chamber (3) is fixedly connected to an air inlet pipe (2) in the middle, and the air inlet pipe (2) is in communication with the pressure stabilizing chamber (3), the inner wall of the pressure stabilizing chamber (3) is fixedly connected to an expansion pipe (7) in the middle, and the expansion pipe (7) is away from the opening of the pressure stabilizing chamber (3), the air inlet pipe (2) is in communication with one end of the expansion pipe (7), the bottom of the pressure stabilizing chamber (3) is fixedly connected to an air outlet pipe (4), and the air outlet pipe (4) is in communication with the pressure stabilizing chamber (3), the open end of the pressure stabilizing chamber (3) is provided with an end cover (6), the side end of the end cover (6) is provided with a bolt (5), and the bolt (5) is away from the pressure stabilizing chamber (3), one end of the bolt (5) passes through the end cover (6) and the pressure stabilizing chamber (3), the end cover One end of the spring (6) is fixedly connected to a plurality of springs (9), and the springs (9) are far away from the bolts (5); the other end of the spring (9) is fixedly connected to a buffer block (10), and the outer end of the buffer block (10) is slidably connected to the inner wall of the end cover (6); the buffer block (10) extends into the pressure stabilizing chamber (3) and is slidably connected to the inner wall of the pressure stabilizing chamber (3); a groove is provided in the middle of the buffer block (10), and the groove is semicircular; a filter element (8) is installed at one end of the buffer block (10), and the filter element (8) is located in the middle of the pressure stabilizing chamber (3); the inner wall of the filter element (8) is fixedly connected to a sealing frame (12), and the sealing frame (12) is far away from the buffer block (10); the expansion tube (7) is located in the middle of the sealing frame (12) and is slidably connected to the sealing frame (12).

2. A supercharger blade protection device for stabilizing intake air flow according to claim 1, characterized in that: The outer ends of the air inlet pipe (2) and the air outlet pipe (4) are respectively fixedly connected with flanges (1), and the air inlet pipe (2) and the air outlet pipe (4) are respectively located in the middle of the flanges (1), and the flanges (1) are far away from the pressure stabilizing chamber (3).

3. The supercharger blade protection device for stabilizing intake air flow according to claim 1, characterized in that: An annular connecting groove (16) is formed at one end of the buffer block (10), and the connecting groove (16) faces the filter element (8); the groove of the buffer block (10) is located in the middle of the connecting groove (16); a connecting plate (13) is fixedly connected to one end of the filter element (8), and the connecting plate (13) extends into the connecting groove (16) and is slidably connected to the connecting groove (16); a screw hole (11) is formed at the outer end of the buffer block (10), and the screw hole (11) passes through the connecting plate (13).

4. A supercharger blade protection device for stabilizing intake air flow according to claim 3, characterized in that: One end of the buffer block (10) is provided with two limit grooves (15), and the limit grooves (15) and the connecting groove (16) are on the same side and symmetrically distributed at two ends of the outer side of the connecting groove (16), the limit grooves (15) are communicated with the connecting groove (16), and the two ends of the outer side of the connecting plate (13) are respectively fixedly connected to the limit blocks (14), and the limit blocks (14) are located in the limit grooves (15) and are slidably connected to the side walls of the limit grooves (15).

5. The supercharger blade protection device for stabilizing intake air flow according to claim 1, characterized in that: A rubber ring is fixedly mounted on the inner wall of the sealing frame (12), and the inner wall of the rubber ring is slidably connected to the outer end of the expansion tube (7).

6. The supercharger blade protection device for stabilizing intake air flow according to claim 1, characterized in that: The expansion tube (7) is trumpet-shaped, and the end of the expansion tube (7) with a larger inner diameter is far away from the air inlet pipe (2).

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