A test device for detecting the tightness of a turbocharger

Abstract

The utility model belongs to turbocharger test technical field, concretely relates to a kind of test device for detecting the sealing property of turbocharger.The test device includes sealed box, rubber hose, pressure regulation component and throttle valve, rubber hose is arranged at sealed box top, rubber hose is communicated with sealed box, pressure regulation component is arranged at sealed box top, pressure regulation component is communicated with sealed box, throttle valve is arranged at sealed box one side bottom, throttle valve is communicated with sealed box.The utility model patent design structure is simple, and operation process is simple, and the efficiency of supercharger sealing property test has been significantly improved, can adapt to the demand of mass production, effectively shorten test cycle.Before and after supercharger test, unnecessary assembly step is reduced, test process is simplified, more conducive to the rapid implementation of sealing property detection, improve the convenience and reliability of test.

Description

Technical Field

[0001] This utility model belongs to the field of turbocharger testing technology, specifically relating to a testing device for detecting the sealing performance of a turbocharger. Background Technology

[0002] As a key component for increasing the power of internal combustion engines, reducing fuel consumption, and decreasing emissions, turbochargers have become an inevitable choice for the development of internal combustion engine technology against the backdrop of energy shortages and increasingly stringent environmental protection requirements. Relevant standards such as "Test Method for Turbocharger Sealing" (JB / T 12335-2015) and "Turbocharger Part 1: General Technical Conditions" (GB / T 23341.1-2018) clearly stipulate the requirements for turbocharger sealing tests to ensure their performance and reliability.

[0003] Currently, turbocharger sealing tests mainly employ two methods: static sealing tests and dynamic sealing tests. However, these two methods have significant limitations in factory testing: firstly, they are inefficient and cumbersome, making them unsuitable for large-scale production; secondly, with the diversification of turbocharger product models and the differentiation of structural designs, specialized tooling needs to be designed for different models, which not only increases the complexity of the test but also significantly raises production costs for enterprises. Therefore, there is an urgent need to develop an efficient, versatile, and lower-cost sealing test method to meet the demands of modern mass production and enhance the market competitiveness of enterprises. Utility Model Content

[0004] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model provides a test device for testing the sealing performance of a turbocharger. The test device includes a sealing box, a rubber hose, a pressure regulating component, and a throttle valve. The rubber hose is located at the top of the sealing box and is connected to the sealing box. The pressure regulating component is located at the top of the sealing box and is connected to the sealing box. The throttle valve is located at the bottom of one side of the sealing box and is connected to the sealing box.

[0005] Preferably, the sealing box includes a first partition, a second partition, and an oil nozzle. The first partition is fixedly disposed at the top of the sealing box and inside the sealing box. The second partition is fixedly disposed at the bottom of the sealing box and inside the sealing box. The first and second partitions are adjacent to each other and are located closer to the inside of the sealing box. The length of the first partition is slightly less than the height of the inside of the sealing box, and the width of the first partition is equal to the width of the inside of the sealing box. The length of the second partition is greater than the gap between the first partition and the bottom of the sealing box, and the width of the second partition is equal to the width of the inside of the sealing box. The rubber hose is connected to the sealing box through the oil nozzle.

[0006] Preferably, the sealed box includes a lubricating oil storage area and an oil draining area. The lubricating oil storage area is formed inside the sealed box by a first partition, and the oil draining area is formed inside the sealed box by the first partition and a second partition.

[0007] Preferably, the other end of the rubber hose is connected to the turbocharger.

[0008] Preferably, the pressure regulating component includes a pressure sensor and a pressure regulating valve. The pressure sensor is located on the top of the sealing box and is connected to the sealing box via a threaded connection. The pressure regulating valve is located on the top of the sealing box and is connected to the sealing box.

[0009] Preferably, the throttle valve is located on one side of the oil drain area.

[0010] The beneficial effects of this utility model are as follows:

[0011] Simple structure, convenient operation, and high testing efficiency: The design structure is simple and the operation process is convenient, which significantly improves the efficiency of the turbocharger sealing test, can meet the needs of mass production, and effectively shortens the test cycle.

[0012] Reduce assembly operations and optimize the testing process: Before and after the turbocharger test, unnecessary assembly steps were reduced, the testing process was simplified, and it is more conducive to the rapid implementation of sealing tests, thus improving the convenience and reliability of the test.

[0013] Reduced testing costs and equipment requirements: Compared to dynamic sealing tests, this invention does not require additional complex devices such as negative pressure pumps, which reduces the requirements for testing equipment, reduces the company's equipment investment and maintenance costs, while still ensuring the accuracy and effectiveness of the test.

[0014] In summary, this utility model has significant advantages in improving testing efficiency, simplifying operation procedures, and reducing production costs, which can better meet the needs of modern production and enhance the market competitiveness of enterprises.

[0015] Additional aspects and advantages of this invention will become apparent from the description which follows, or may be learned by practice of this invention. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0017] Figure 1This is a schematic diagram of the test device for detecting the sealing performance of a turbocharger according to this utility model;

[0018] Figure 2 This is a schematic diagram of the test device for testing the sealing performance of a turbocharger according to this utility model;

[0019] The correspondence between the reference numerals and component names in the figure is as follows:

[0020] 1 is a sealed box, 11 is the first partition, 12 is the second partition, 13 is an oil nozzle, 14 is the lubricating oil storage area, 15 is the oil drain area, 2 is a rubber hose, 3 is a pressure regulating component, 31 is a pressure sensor, 32 is a pressure regulating valve, and 4 is a throttle valve. Detailed Implementation

[0021] 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.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] The present invention provides a test device for detecting the sealing performance of a turbocharger, comprising a sealing box 1, a first partition 11, a second partition 12, an oil nozzle 13, a lubricating oil storage area 14, an oil drain area 15, a rubber hose 2, a pressure regulating component 3, a pressure sensor 31, a pressure regulating valve 32, and a throttle valve 4.

[0024] like Figure 1As shown, the rubber hose 2 is installed at the top of the sealed box 1 and is connected to the sealed box 1 through the oil nozzle 13. The first partition 11 is fixedly installed at the top inside the sealed box 1, and the second partition 12 is fixedly installed at the bottom inside the sealed box 1. The first partition 11 and the second partition 12 are adjacent to each other and close to the inside of the sealed box 1. The length of the first partition 11 is slightly less than the height inside the sealed box 1, and the width is equal to the width inside the sealed box 1. The length of the second partition 12 is higher than the gap between the first partition 11 and the bottom of the sealed box 1, and the width is equal to the width inside the sealed box 1. The lubricating oil storage area 14 is formed inside the sealed box 1 by the first partition 11. The oil drain area 15 is formed inside the sealed box 1 by the first partition 11 and the second partition 12. The pressure sensor 31 is installed at the top of the sealed box 1 and is connected to it by a thread. The pressure regulating valve 32 is installed at the top of the sealed box 1 and is connected to it. The throttle valve 4 is installed on one side of the oil drain area 15 and is connected to the sealed box 1.

[0025] like Figure 2 As shown, the other end of the rubber hose 2 is connected to the turbocharger.

[0026] The sealing box 1 is welded from corrosion-resistant 304 steel. The rubber hose 2 is made of rubber (NBR), which has the advantages of being wear-resistant, corrosion-resistant, and relatively inexpensive. The pressure regulating valve 32 adjusts the pressure through a pressure regulating spring, rubber template, and valve stem inside the valve body. The pressure relief port at the other end is responsible for pressure regulation.

[0027] When conducting a turbocharger sealing test, the turbocharger needs to have its compressor casing removed and placed on the test bench. It is then sealed and connected to the rubber hose 2 through the oil return port. After the test begins, compressed air is used to blow air at the turbine end to expand and do work, thereby driving the turbocharger to operate until the speed meets the turbocharger speed requirements when the diesel engine is idling. The speed is then maintained at a constant level.

[0028] Subsequently, as the turbocharger operates, the oil-gas mixture at the return port flows along the rubber hose 2 into the sealed housing 1. Due to the sealed nature of the container, the continuous inflow of the oil-gas mixture creates positive pressure. The pressure data transmitted by the pressure sensor 31 is then used to fine-tune the pressure inside the sealed housing via the pressure regulating valve 32. The pressure value is gradually increased at 2 kPa intervals until oil leakage is observed at the back of the compressor impeller. The pressure value at the time of leakage is recorded; this pressure value is equivalent to the negative pressure value at the compressor inlet of the turbocharger. By recording the pressure value at the time of leakage, the negative pressure value of the turbocharger oil leakage can be determined.

[0029] After the test, disconnect the rubber hose from the oil return port of the turbocharger bearing body, and then discharge the lubricating oil in the sealed box through the throttle valve 4 in the right oil drain area; the turbocharger only needs to be cleaned at the compressor end and the compressor volute reassembled, which is convenient and simple to operate.

[0030] The above description only describes the preferred embodiments of the present utility model. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model, and all such changes should be included within the protection scope of the present utility model.

Claims

1. A testing apparatus for detecting the sealing performance of a turbocharger, characterized in that: The test apparatus includes a sealed box (1), a rubber hose (2), a pressure regulating component (3), and a throttle valve (4). The rubber hose (2) is located on the top of the sealed box (1) and is connected to the sealed box (1). The pressure regulating component (3) is located on the top of the sealed box (1) and is connected to the sealed box (1). The throttle valve (4) is located on the bottom side of the sealed box (1) and is connected to the sealed box (1).

2. The test apparatus for detecting the sealing performance of a turbocharger according to claim 1, characterized in that: The sealed box (1) includes a first partition (11), a second partition (12), and an oil nozzle (13). The first partition (11) is fixedly installed on the top of the sealed box (1) and inside the sealed box (1). The second partition (12) is fixedly installed at the bottom of the sealed box (1) and inside the sealed box (1). The first partition (11) and the second partition (12) are adjacent to each other and are closer to the inside of the sealed box (1). The length of the first partition (11) is slightly less than the height inside the sealed box (1). The width of the first partition (11) is equal to the width inside the sealed box (1). The length of the second partition (12) is higher than the gap between the first partition (11) and the bottom of the sealed box (1). The width of the second partition (12) is equal to the width inside the sealed box (1). The rubber hose (2) is connected to the sealed box (1) through the oil nozzle (13).

3. The test apparatus for detecting the sealing performance of a turbocharger according to claim 2, characterized in that: The sealed box (1) includes a lubricating oil storage area (14) and an oil draining area (15). The lubricating oil storage area (14) is formed in the sealed box (1) by a first partition (11), and the oil draining area (15) is formed in the sealed box (1) by the first partition (11) and the second partition (12).

4. The test apparatus for detecting the sealing performance of a turbocharger according to claim 1, characterized in that: The other end of the rubber hose (2) is connected to the turbocharger.

5. The test apparatus for detecting the sealing performance of a turbocharger according to claim 1, characterized in that: The pressure regulating component (3) includes a pressure sensor (31) and a pressure regulating valve (32). The pressure sensor (31) is located on the top of the sealing box (1) and is connected to the sealing box (1) via a threaded connection. The pressure regulating valve (32) is located on the top of the sealing box (1) and is connected to the sealing box (1).

6. The test apparatus for detecting the sealing performance of a turbocharger according to claim 3, characterized in that: The throttle valve (4) is located on one side of the oil drain area (15).

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