Engine coolant high temperature heat transfer deposition corrosion test bench

Abstract

The utility model discloses an engine cooling liquid high temperature heat conduction deposition corrosion test bench, including the high temperature circulating loop that is used for placing a plurality of test piece device's liquid storage tank, temperature control system and cooling system constitution, be equipped with the testing device for only test piece on high temperature circulating loop. The utility model can simulate the real temperature environment of engine actual operation time, improve the accuracy and reliability of test result, and the independent heating system and test module are set up to engine aluminum material, can accurately measure the influence of cooling liquid to engine aluminum material under different temperatures.

Description

Technical Field

[0001] This utility model relates to a test bench, and more particularly to a test bench for high-temperature thermal conductivity deposition corrosion of engine coolant. Background Technology

[0002] During the operation of a car engine, coolant plays a crucial role in heat dissipation. When the engine is running, the temperature of the cylinder walls and cylinder head can reach as high as 120℃ to 370℃. If coolant is not used in time to cool them, engine components will expand due to excessive temperature, affecting normal operation. In high-temperature environments, coolant will undergo complex physical and chemical reactions with various materials in engine components and the engine's aluminum components, leading to corrosion. This corrosion will reduce the performance and lifespan of the coolant system and engine, and may even cause safety problems.

[0003] Most existing coolant corrosion testing equipment operates at temperatures below 100℃, which cannot accurately simulate the real temperature environment during actual engine operation. This results in significant discrepancies between test results and actual usage conditions, making it difficult to accurately assess the corrosive impact of coolant on materials under actual operating conditions. Furthermore, it has shortcomings in temperature control accuracy, test environment stability, and simultaneous testing of multiple materials, failing to meet the needs of modern engine coolant performance testing. Summary of the Invention

[0004] Purpose of the utility model: This utility model provides a test bench for high-temperature thermal conductivity deposition corrosion of engine coolant that can simulate the real temperature environment during actual engine operation and can simultaneously test engine aluminum and various engine materials.

[0005] Technical solution: The engine coolant high-temperature thermal conductivity deposition corrosion test bench of this utility model includes a storage tank for placing several test pieces, a temperature control system and a cooling system forming a high-temperature circulation loop, and a test device for independent test pieces is provided on the high-temperature circulation loop.

[0006] The temperature of the coolant in the reservoir is controlled by a temperature control system. This system includes a heating device with a heating temperature range of 200℃ to 350℃, a temperature sensor, and a temperature controller, which can realistically simulate the actual operating conditions of an engine. The temperature controller controls the operation of the heating device and the cooling system based on preset temperature values ​​and temperature signals received from the temperature sensor. When the temperature inside the reservoir is lower than the preset value, the heating device is activated; when the temperature is higher than the preset value, the cooling system is activated, thereby achieving precise temperature control within the reservoir.

[0007] The storage tank is connected to a high-temperature pressure transmitter and a pressurizing device. The high-temperature circulation loop has a pressure regulating module and a pressure sensor. The pressure regulating module can control the pressure in the high-temperature circulation loop. When the pressure value received by the pressure sensor exceeds the set pressure, the pressure regulating module will activate the high-temperature pressure transmitter to release pressure. When the pressure is lower than the set pressure, the pressurizing device will be activated to replenish the pressure.

[0008] The testing device includes two or more valves, temperature detectors, and a high-temperature testing module, the highest heating temperature of which is 350°C. The high-temperature testing modules can be connected in parallel or in series, and their connection in the pipeline can be changed by adjusting the opening and closing of the valves. It can independently test engine aluminum or other engine materials.

[0009] The cooling system includes two or more radiators, each with a fan in front of it. When rapid heating is required, the fans are not activated, and only one radiator is turned on. When the temperature exceeds the set temperature, both radiators are activated. The high-temperature coolant, after circulation, flows through the two radiators, and the forced convection of the fans rapidly lowers the coolant temperature to meet the test temperature requirements.

[0010] The high-temperature circulation loop is equipped with a flow meter and a flow controller to control the flow rate of coolant in the loop.

[0011] The storage tank is connected to a leakage interlock power-off alarm device, and the test bench is covered with a protective cover to prevent coolant leakage under high temperature and pressure. The protective cover is movable for easy maintenance and testing.

[0012] The test bench is equipped with a data acquisition system that can collect and record temperature, pressure, and flow rate, and process, store, and analyze the data to generate graphs.

[0013] Beneficial effects: Compared with the prior art, the present invention has the following advantages: (1) It can simulate the real temperature environment when the engine is actually running, and improve the accuracy and reliability of the test results; (2) It sets up an independent heating system and test module for the engine aluminum material, and can accurately measure the effect of coolant on engine aluminum material at different temperatures; (3) It sets up a leakage interlock power failure alarm device and a protective cover to improve the safety of the test process. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the high-temperature testing module. Detailed Implementation

[0016] The technical solution of this utility model will be further described below with reference to the accompanying drawings.

[0017] See Figure 1 The engine coolant high-temperature thermal conductivity deposition corrosion test bench of this utility model includes a high-temperature circulation loop consisting of a reservoir 1, pipelines 2, a circulation pump 3, and a cooling system. The reservoir 1 contains several test piece devices 15, a high-temperature level gauge, a heating device 12, and a temperature sensor. A temperature controller is mounted outside the reservoir, connected to the heating device 12 and the temperature sensor. These three components together form a temperature control system to control the temperature of the coolant in the reservoir 1. The reservoir 1 is also connected to a leakage interlock power-off alarm device 13. The reservoir 1 has a stainless steel top cover with an observation hole. A high-temperature resistant sealing ring capable of withstanding 200℃~350℃ is located between the stainless steel top cover and the reservoir 1. A high-temperature resistant pressure transmitter 5 and a pressurizing device 14 are mounted on the stainless steel top cover. The high-temperature circulation loop includes a test device for independent test pieces, a pressure regulating module 10, a pressure sensor 11, a flow meter 6, a flow controller, a regulating valve 16, and a thermometer 17. The testing apparatus includes valve 9, temperature detector 4, and high-temperature testing module 7; two sets of this testing apparatus are available. The cooling system includes two or more radiators 8, each with a fan in front of it.

[0018] The various system components are mounted on a test bench to form a circulating system. The storage tank 1 is made of high-temperature resistant stainless steel such as 304 or 316L, with a volume of 15-25 L. The internal test piece device 15 is a spirally rising support along the tank wall. Both the inner wall of the storage tank 1 and the surface of the test piece device 15 undergo special treatment, exhibiting excellent high-temperature resistance and corrosion resistance. The heating device 12 is a 220 V, 3 kW heating rod with a heating temperature range of 200℃-350℃. The temperature sensor is a high-temperature resistant temperature sensor with a range of 4-20 MA and a measurement range of 0-350℃. The high-temperature resistant pressure transmitter 5 used in this invention has a pressure range of 0-0.6 MPa and can be set independently. The piping 2 of the high-temperature circulation loop uses high-temperature resistant stainless steel pipes such as DN 38 or DN 20. The flow meter 6 is a turbine flow meter with a range of 4-20 MA and a measurement range of 0-250 L / min. Circulation pump 3 is a 220V, 1000W high-temperature resistant magnetic or centrifugal pump with a rated speed of 2800 rpm and a head of 90 m. 3 / h. Pressure sensor 11 is a 4~20mA pressure sensor with a range of 0~1.0 MPa. Leakage interlock power failure alarm device 13 uses a magnetic float level gauge, which realizes level display through magnetic coupling principle, and is equipped with a 4~20mA remote transmitter for signal transmission. The safety guard is made of glass or acrylic material and is moved by slide rails or pulleys.

[0019] The high-temperature testing module 7 in the testing device has a diameter of 65 mm and a thickness of 13 mm. The module base has a groove 702 in the center for placing the aluminum sheet 701 to be tested. The groove 702 is connected to the pipe 2 of the high-temperature circulation loop. The high-temperature testing module 7 is equipped with a temperature detector 4, a heating device 703, and a temperature controller 704. The heating device 703 is a thermocouple with a range of 0~400℃. The high-temperature testing modules 7 are installed in parallel, connected in series using pipes. The connection method of the two sets of high-temperature testing modules 7 in the pipes is changed by adjusting the opening and closing of the valve 9, allowing them to be connected in both series and parallel. When performing high-temperature testing on aluminum, the aluminum sheet 701 to be tested is installed in the groove in the center of the base of the high-temperature testing module 7. After sealing the groove 702 with a high-temperature resistant sealing ring, the pressure cap 705 is placed on top, and the fixing screws are tightened to ensure no leakage.

[0020] Fix the experimental material in the storage tank 1 and close the bottom valve of the storage tank 1. Place the prepared test piece on the test piece device 15 and inject coolant. After filling with liquid, cover the top of the storage tank 1 and check for leaks in the pipeline. Open the regulating valve 16 and the circulation pump 3, set the speed of the circulation pump 3 to 2500 rpm and the flow rate to 1~1.3 L / s, run for 20 to 30 minutes, and check the liquid level in the storage tank 1 and for leaks. If the leakage interlock power-off alarm device 13 detects a leak, it will automatically cut off the power and stop operation. Turn on the heating switch of the heating device 12, set the temperature to 135~140℃, and conduct a high-temperature thermal conductivity deposition corrosion test of the engine coolant. At this time, if a high-temperature test is to be conducted independently on the engine aluminum or other engine materials, turn on the heating device 703, set the temperature to 240~250℃, and conduct the high-temperature test simultaneously with the high-temperature thermal conductivity deposition corrosion test of the engine coolant in the storage tank 1.

Claims

1. A high-temperature thermal conductivity deposition corrosion test bench for engine coolant, comprising a reservoir (1) for placing several test specimens (15), a high-temperature circulation loop consisting of a temperature control system and a cooling system, characterized in that, A testing device for individual test pieces is provided on the high-temperature cycling circuit.

2. The engine coolant high-temperature thermal conductivity deposition corrosion test bench according to claim 1, characterized in that, The temperature of the storage tank (1) is controlled by a temperature control system.

3. The engine coolant high-temperature thermal conductivity deposition corrosion test bench according to claim 1, characterized in that, The storage tank (1) is connected to a high-temperature pressure transmitter (5) and a pressurizing device (14), and the high-temperature circulation loop has a pressure regulating module (10) and a pressure sensor (11).

4. The engine coolant high-temperature thermal conductivity deposition corrosion test bench according to claim 1, characterized in that, The testing device includes two or more valves (9), a temperature detector (4), and a high-temperature testing module (7).

5. The engine coolant high-temperature thermal conductivity deposition corrosion test bench according to claim 4, characterized in that, The high-temperature test module (7) includes a heating device (703) and a temperature controller (704).

6. The engine coolant high-temperature thermal conductivity deposition corrosion test bench according to claim 1, characterized in that, The cooling system includes two or more radiators (8).

7. The engine coolant high-temperature thermal conductivity deposition corrosion test bench according to claim 1, characterized in that, The high-temperature circulation loop has a flow meter (6) and a flow controller.

8. The engine coolant high-temperature thermal conductivity deposition corrosion test bench according to claim 1, characterized in that, The liquid storage tank (1) is connected to a leakage interlock power failure alarm device (13), and the test bench is covered with a protective cover.

9. The engine coolant high-temperature thermal conductivity deposition corrosion test bench according to any one of claims 1, 2, 3, 4, and 7, characterized in that, The test bench is equipped with a data acquisition system that can collect and record temperature, pressure, and flow rate.

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