Turbocharger heat shield temperature data acquisition device

Abstract

The utility model relates to the technical field of heat shield performance testing, in particular to a turbocharger heat shield temperature data acquisition device, which comprises a testing platform, a simulation shell and temperature measuring equipment, the appearance of the simulation shell is the same as that of a turbocharger, an electric heating assembly is arranged in the simulation shell, and the temperature measuring equipment is arranged in the simulation shell. The heat insulation cover is arranged outside the simulation shell in a sleeving mode, two clamping assemblies symmetrically distributed along the vertical face are arranged on the testing platform, each clamping assembly comprises a supporting column installed on the testing platform, the upper end of each supporting column is rotationally connected with a supporting shaft with the horizontal axis, a disc is coaxially and fixedly connected to the supporting shaft, and the disc is fixedly connected with the testing platform. The simulation shell wrapped with the heat insulation cover is clamped between the discs of the two clamping assemblies. The device can better simulate a use environment, workers do not need to repeatedly move the heat insulation cover due to integral heating, and the disc can rotate, so that the direction of the heat insulation cover is changed by rotating the disc during temperature measurement, and temperature measurement work is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of heat shield performance testing, in particular to a temperature data acquisition device for a heat shield of a turbocharger. Background Art

[0002] When the supercharged engine in a vehicle is running, the high-temperature, high-pressure exhaust gas generated enters the turbocharger through the exhaust manifold, driving the turbine to rotate at high speed. Due to the high temperature and high pressure of the exhaust gas, the turbine casing will be heated to a very high temperature. The large amount of heat emitted by the turbine casing has the risk of burning out the parts in the engine compartment. Therefore, a heat shield is generally installed at the turbocharger of the vehicle engine to protect the components in the engine compartment.

[0003] The applicant's parent company previously applied for a temperature data acquisition device for an engine turbocharger heat shield, disclosed in publication (announcement) number CN210180548U. During testing, the heat shield is simply placed on a pallet, and then hot air is blown onto the heat shield through a hot air pipe. The temperature of the heat shield is then detected by a temperature sensor. Although the device can test the thermal insulation effect of the heat shield to a certain extent, the test is not very rigorous. Only a single point test can be performed each time (i.e., the test is performed wherever the hot air flow is sprayed). On the one hand, the single-point test is inaccurate and difficult to truly simulate the actual operating conditions of the heat shield. On the other hand, it is also troublesome to move the pallet each time. In addition, the heat loss of the hot air flow is large, resulting in excessively high ambient temperature and discomfort for the tester. Utility Model Content

[0004] The purpose of the utility model is to solve the problems in the prior art that single-point testing is inaccurate and difficult to truly simulate the actual operating conditions of the heat shield. On the other hand, it is also troublesome to move the tray each time. In addition, the heat loss of the hot air flow is large, resulting in excessively high ambient temperature and discomfort for the testers. A turbocharger heat shield temperature data acquisition device is proposed to solve the problems that single-point testing in the prior art is inaccurate and difficult to truly simulate the actual operating conditions of the heat shield.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A turbocharger heat shield temperature data acquisition device includes a test platform, a simulation shell, and a temperature measuring device. The simulation shell has the same shape as the turbocharger, an electric heating component is provided inside the simulation shell, and the heat shield is sleeved on the outside of the simulation shell. The test platform is provided with two clamping assemblies symmetrically distributed along the vertical plane. The clamping assembly includes a support column mounted on the test platform, the upper end of the support column is rotatably connected to a support shaft with a horizontal axis, and a disc is coaxially fixed to the support shaft. The simulation shell wrapped with the heat shield is clamped between the discs of the two clamping assemblies.

[0007] The support column of one clamping assembly is fixedly connected to the test platform, and the bottom end of the support column of the other clamping assembly is fixedly connected to a first slider, the first slider is slidably connected to the test platform, and a thrust spring is installed between the first slider and the test platform, and the thrust spring can push the first slider closer to the other clamping assembly.

[0008] A second slider is slidably connected to the side of the disc away from the support column. The sliding direction of the second slider is set along the radial direction of the disc. A locking bolt is threadedly connected to the second slider. The second slider is locked to the disc by the locking bolt. A chuck is installed on the second slider.

[0009] During testing, the axis of the simulation housing is tilted.

[0010] The electric heating component includes an electric heating wire, which is arranged close to the inner wall of the simulation shell, and the simulation shell has a wire lead-out hole.

[0011] The simulated housing is a turbocharger housing.

[0012] The utility model proposes a turbocharger heat shield temperature data acquisition device, which has the beneficial effects of: the device directly covers the heat shield on the simulation shell, and the simulation shell has a heat source inside, which can better simulate the use environment and heat the entire heat shield at one time, which is more accurate than the traditional single-point heating and single-point temperature measurement methods. At the same time, due to the integral heating, the staff does not need to repeatedly move the heat shield. Since the disc can be rotated, the orientation of the heat shield can be changed by rotating the disc during temperature measurement, which facilitates the temperature measurement work. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the state structure of the utility model Figure 1 ;

[0014] Figure 2 This is a schematic diagram of the state structure of the utility model Figure 2 .

[0015] In the figure: test platform 1, first slider 2, thrust spring 3, support column 4, support shaft 5, disk 6, second slider 7, locking bolt 8, chuck 9, heat shield 10, electric heating component 11, wire lead-out hole 12, clamping component 13, simulation shell 14. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0017] Reference Figure 1-Figure 2 A turbocharger heat shield temperature data acquisition device includes a test platform 1, a simulation shell 14, and a temperature measuring device. The simulation shell 14 has the same shape as the turbocharger. An electric heating component 11 is provided inside the simulation shell 14, and the heat shield is sleeved on the outside of the simulation shell 14. Two clamping assemblies 13 symmetrically distributed along the vertical plane are provided on the test platform 1. The clamping assembly 13 includes a support column 4 installed on the test platform 1. The upper end of the support column 4 is rotatably connected to a support shaft 5 with a horizontal axis. A disc 6 is coaxially fixed to the support shaft 5. The simulation shell 14 wrapped with the heat shield is clamped between the discs 6 of the two clamping assemblies 13.

[0018] During the test, the heat insulation cover is put on the simulation shell 14, and then clamped between the discs 6 of the two clamping components 13. Finally, the electric heating component 11 is energized to make the simulation shell 14 heat up from the inside out. Then, the temperature of each part of the heat insulation cover is measured by a temperature measuring device. The temperature measuring device can be a handheld temperature sensor or an infrared temperature measuring device. The existing temperature measuring device can be selected according to actual needs.

[0019] This device directly puts the heat shield on the simulation shell 14, and there is a heat source inside the simulation shell 14, which can better simulate the use environment and heat the entire heat shield at one time. Compared with the traditional single-point heating and single-point temperature measurement methods, it is more accurate. At the same time, due to the integral heating, the staff does not need to repeatedly move the heat shield. Figure 1 、 Figure 2 Since the disk 6 can rotate, the orientation of the heat shield 10 can be changed by rotating the disk 6 during temperature measurement, which facilitates the temperature measurement.

[0020] refer to Figure 1 In order to facilitate the clamping of the simulation shell 14 wrapped with the heat insulation cover between the disks 6 of the two clamping components 13, the support column 4 of one clamping component 13 is fixed to the test platform 1, and the bottom end of the support column 4 of the other clamping component 13 is fixed with a first slider 2, and the first slider 2 is slidably connected to the test platform 1. A thrust spring 3 is installed between the first slider 2 and the test platform 1, and the thrust spring 3 can push the first slider 2 closer to the other clamping component 13.

[0021] refer to Figure 1 When clamping, pull the support column 4 with the slider outward to move the two discs 6 away, then place the simulation shell 14 wrapped with the heat insulation cover between the two discs 6, then release the support column 4, and the thrust spring 3 pushes the first slider 2 toward the other clamping component 13, and the simulation shell 14 wrapped with the heat insulation cover is clamped between the two discs 6.

[0022] refer to Figure 1The disc 6 is slidably connected to the side away from the support column 4 with a second slider 7. The sliding direction of the second slider 7 is set along the radial direction of the disc 6. The second slider 7 is threadedly connected to a locking bolt 8. The second slider 7 is locked to the disc 6 by the locking bolt 8. The second slider 7 is installed with a clamp 9. The position of the clamp 9 of the device can be adjusted along the radial direction of the disc 6. In this way, the eccentric position of the clamp 9 can be adjusted to adapt to the irregular shape of the simulation shell 14 and better clamp the simulation shell 14.

[0023] In order to facilitate temperature measurement, during the test, the axis of the simulation shell 14 is tilted. The overall shape of the turbocharger shell is similar to a blower. During the test, if the axis is set horizontally, it will be difficult to measure the temperature on both sides. Figure 1 The axis is tilted as shown, so that more parts of the heat shield 10 can be exposed by simply rotating the disk 6, which facilitates temperature measurement.

[0024] As an embodiment, the electric heating component 11 includes an electric heating wire, which is arranged against the inner wall of the simulated shell 14. The simulated shell 14 has a wire lead-out hole 12. The electric heating wire is relatively deformable and can be bent better to better adapt to the inner wall of the simulated shell 14. Of course, it is also possible to directly insert an electric heating rod, but the temperature distribution is not very uniform, which can also roughly meet the test requirements.

[0025] The simulated housing 14 is a turbocharger housing. The internal parts of the turbocharger are removed and the actual turbocharger housing is directly used without separately manufacturing a fake housing.

[0026] The above is only a preferred specific implementation method of the present invention, but the scope of protection of the present invention is not limited to this. Any technical solution, conception, and design obtained by equivalent replacement or modification of the technical solution and utility model concept of the present invention by any technical personnel familiar with the technical field within the technical scope disclosed by the present invention should be covered by the scope of protection of the present invention.

Claims

1. A turbocharger heat shield temperature data acquisition device, characterized in that: The invention comprises a test platform (1), a simulation shell (14), and a temperature measuring device. The simulation shell (14) has the same shape as a turbocharger. An electric heating component (11) is provided inside the simulation shell (14), and a heat shield is sleeved on the outside of the simulation shell (14). Two clamping components (13) symmetrically distributed along a vertical plane are provided on the test platform (1). The clamping component (13) comprises a support column (4) mounted on the test platform (1). The upper end of the support column (4) is rotatably connected to a support shaft (5) with a horizontal axis. A disc (6) is coaxially fixed to the support shaft (5). The simulation shell (14) wrapped with the heat shield is clamped between the discs (6) of the two clamping components (13).

2. A turbocharger heat shield temperature data acquisition device according to claim 1, characterized in that: The support column (4) of one clamping assembly (13) is fixedly connected to the test platform (1), and the bottom end of the support column (4) of the other clamping assembly (13) is fixedly connected to a first slider (2), the first slider (2) is slidably connected to the test platform (1), and a thrust spring (3) is installed between the first slider (2) and the test platform (1), and the thrust spring (3) can push the first slider (2) toward the other clamping assembly (13).

3. The turbocharger heat shield temperature data acquisition device according to claim 1, characterized in that: A second slider (7) is slidably connected to the side of the disk (6) away from the support column (4); the sliding direction of the second slider (7) is arranged radially along the disk (6); a locking bolt (8) is threadedly connected to the second slider (7); the second slider (7) is locked to the disk (6) by the locking bolt (8); and a chuck (9) is installed on the second slider (7).

4. A turbocharger heat shield temperature data acquisition device according to claim 3, characterized in that: During testing, the axis of the simulation housing (14) is tilted.

5. The turbocharger heat shield temperature data acquisition device according to claim 1, characterized in that: The electric heating component (11) comprises an electric heating wire, which is arranged against the inner wall of the simulation shell (14), and the simulation shell (14) has a wire lead-out hole (12).

6. A turbocharger heat shield temperature data acquisition device according to any one of claims 1 to 5, characterized in that: The simulation housing (14) is a turbocharger housing.

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