An oil and gas seal testing device

Abstract

The present invention provides an oil and gas seal testing device, which can freely simulate the oil and gas seal testing under different oil temperature environments, improving the efficiency and cost of the oil and gas seal testing. The present invention includes an oil tank, a heating plate, a filter, a gear pump, a radiator, an oil and gas seal environmental test bench, a thermal resistor and a temperature sensor, a coupling, a torque meter, and a variable frequency motor. The heating plate is placed inside the oil tank to increase the oil temperature, the radiator is placed between the gear pump and the oil and gas seal environmental test bench to reduce the oil temperature, the temperature sensor is placed inside the oil and gas seal environmental test bench to measure the oil temperature, and the torque meter can make the oil and gas seal rotate on the environmental test bench through the coupling. The oil and gas seal testing device of the present invention can detect the dynamic sealing performance of the oil and gas seal at a specific oil temperature, providing data support for predicting its reliability and service life.

Description

Technical Field

[0001] The present invention relates to the technical field of oil and gas seal testing, and particularly to an oil and gas seal testing device. Background Art

[0002] Installing an oil and gas seal in an automotive wheel side assembly can form a rotating sealing air path, enabling the air path to connect from the stationary vehicle body to the rotating wheel. However, currently, testing the oil and gas seal at different temperatures is a major challenge. As the tire rotates, the oil temperature around the oil and gas seal rises, and it is meaningful to conduct tests in the same oil temperature environment during testing. Traditional oil and gas seal testing devices must simulate the tire rotating at a certain speed and running for a certain period of time to achieve a similar real environment, which is very time-consuming and resource-consuming. Summary of the Invention

[0003] In view of this, the present invention provides an oil and gas seal testing device that can freely simulate the testing of oil and gas seals in different oil temperature environments, improving the efficiency and cost of oil and gas seal testing.

[0004] To achieve the above object, the technical solution of the present invention is as follows:

[0005] An oil and gas seal testing device of the present invention includes an oil tank, a heating plate, a filter, a gear pump, a radiator, an oil and gas seal environmental test bench, a thermal resistor and a temperature sensor, a coupling, a torque meter, and a variable frequency motor; wherein, the heating plate is built into the oil tank to heat the oil; the filter filters out impurities and other poor heat conductors in the oil; the gear pump is connected to the inlet pipe and the outlet pipe, enabling the oil to enter the oil and gas seal test bench through the inlet pipe in the device and then return to the oil tank through the outlet pipe; the radiator is installed between the gear pump and the oil and gas seal environmental test bench for heat dissipation to lower the oil temperature; the thermal resistor and the temperature sensor are built into the oil tank to measure the temperature of the oil in the oil tank; the variable frequency motor, the torque meter, and the oil and gas seal test bench are connected by a coupling, and the torque meter and the variable frequency motor drive the test oil and gas seal to rotate, and the service life of the oil and gas seal under the ideal oil temperature is measured using the oil and gas seal test bench.

[0006] Wherein, in the oil and gas seal environmental test bench, the oil circulates in the environmental test bench through an oil circuit joint, and the gas path enters at a gas path joint to form an oil and gas test environment. The oil seal seals the oil, and temperature sensors are respectively installed near the outer ring of the oil and gas seal and near the oil and gas seal lip.

[0007] Wherein, by measuring the temperatures at near the outer ring of the oil and gas seal and near the oil and gas seal lip, the measured temperature is considered as the oil temperature of the oil and gas seal test environment. The oil temperature is increased by the heating plate. When the ideal test environment temperature is measured by the temperature sensor, the power of the heating plate is reduced to keep the oil approximately at a constant temperature. At this time, the service life of the test oil and gas seal at a fixed temperature is measured.

[0008] Among them, an O-ring is used at the oil seal, and the dust cover prevents dust from entering.

[0009] Among them, a protective cover is provided outside the oil and gas seal environmental test bench.

[0010] Beneficial effects:

[0011] 1. The oil and gas seal testing device of the present invention includes an oil tank, a heating plate, a filter, a gear pump, a radiator, an oil and gas seal environmental test bench, a thermal resistor, a temperature sensor, a coupling, a torque meter, and a variable-frequency motor. The heating plate is placed inside the oil tank to increase the oil temperature. The radiator is placed between the gear pump and the oil and gas seal environmental test bench to reduce the oil temperature. The temperature sensor is placed inside the oil and gas seal environmental test bench to measure the oil temperature. The torque meter can make the oil and gas seal rotate on the environmental test bench through the coupling. The oil and gas seal testing device of the present invention can detect the dynamic sealing performance of the oil and gas seal at a specific oil temperature, providing data support for predicting its reliability and service life.

[0012] 2. The environmental test bench of the present invention includes a bracket, a hub, an outer ring of the oil and gas seal, a central shaft, a dust cover, an end cover, an oil circuit joint, a gas circuit joint, screws, bearings, an oil seal, an O-ring, a slotted nut, a lock washer, and a temperature sensor. Oil circulates inside the environmental test bench through the oil circuit joint, and gas enters through the gas circuit joint to form an oil and gas test environment. The oil seal seals the oil, and an O-ring is used at the oil seal. The dust cover prevents dust from entering, making the oil cleaner. Temperature sensors are respectively installed near the outer ring of the oil and gas seal and near the gas lip of the oil and gas seal. By measuring the temperature here, it can be approximately considered that the measured temperature is the oil temperature of the oil and gas seal test environment. The oil temperature is increased by the heating plate. When the ideal test environment temperature is measured by the temperature sensor, the power of the heating plate is reduced to make the oil approximately constant temperature. At this time, the service life of the oil and gas seal at a fixed temperature can be tested. This method equivalently replaces the oil and gas environment that heats up due to mechanical friction, greatly improving the test efficiency.

[0013] 3. The present invention uses the method of heating the oil temperature and dissipating heat through the radiator to simulate the usage environment of the real oil and gas seal. While the traditional test bench can only reach the test temperature of the oil and gas seal at high speed by the mechanical friction heating caused by the rotation of the bearing. The device of the present invention improves the efficiency of the oil and gas seal test. Description of the Drawings

[0014] Figure 1 It is a schematic structural diagram of the oil and gas seal testing device of the present invention.

[0015] Figure 2 It is a schematic structural diagram of the oil and gas seal environmental test bench of the oil and gas seal testing device of the present invention.

[0016] Figure 3 It is a detailed decomposition diagram of the oil and gas seal testing device of the present invention.

[0017] Among them, 1 - fuel tank; 2 - heating plate; 3 - filter; 4 - gear pump; 5 - radiator; 6 - thermal resistor and temperature sensor; 7 - coupling; 8 - torque meter; 9 - variable frequency motor; 10 - environmental test bench support; 11 - hub; 12 - outer ring of oil and gas seal; 13 - central shaft; 14 - dust cover; 15 - end cover; 16 - oil circuit joint; 17 - gas circuit joint; 18 - screw; 19 - bearing; 20 - oil seal; 21 - O-ring; 22 - slotted nut; 23 - lock washer; 24 - protective cover; 25 - inlet oil pipeline; 26 - outlet oil pipeline; 27 - temperature sensor. Specific implementation mode

[0018] The present invention will be described in detail below with reference to the accompanying drawings and by way of examples.

[0019] The present invention provides an oil and gas seal testing device, and the composition block diagram is as Figure 1 shown, including a fuel tank 1, a heating plate 2, a filter 3, a gear pump 4, a radiator 5, a thermal resistor and temperature sensor 6, a coupling 7, a torque meter 8, a variable frequency motor 9, and an oil and gas seal environmental test bench; wherein the heating plate 2 is built into the fuel tank 1 and can heat the oil; the filter 3 can filter out impurities and other poor heat conductors in the oil; the gear pump 4 is connected to the inlet oil pipe 25 and the outlet oil pipe 26, and the gear pump can make the oil in the device enter the oil and gas seal test bench through the inlet oil pipe and then return to the fuel tank through the outlet oil pipe, that is, the oil circuit enters the oil and gas seal environmental test bench through the oil circuit joint and the inlet oil pipeline and returns to the fuel tank through the outlet oil pipeline; the radiator 5 is installed between the gear pump 4 and the oil and gas seal environmental test bench and can dissipate heat to lower the oil temperature; the thermal resistor and temperature sensor 6 are built into the fuel tank 1 and can measure the temperature of the oil in the fuel tank; the variable frequency motor 9, the torque meter 8, and the oil and gas seal test bench are connected by the coupling 7, and the torque meter 8 and the variable frequency motor 9 drive the test oil and gas seal to rotate, and the oil and gas seal test bench can measure the service life of the oil and gas seal under the ideal oil temperature.

[0020] Furthermore, there is a protective cover 24 outside the oil-gas seal environmental test bench. The oil-gas seal environmental test bench includes a bracket 10, a hub 11, an outer oil-gas seal ring 12, a central shaft 13, a dust cover 14, an end cover 15, an oil circuit connector 16, a gas circuit connector 17, screws 18, bearings 19, oil seals 20, O-rings 21, slotted nuts 22, lock washers 23, and a temperature sensor 27. Oil circulates inside the environmental test bench through the oil circuit connector 16, and gas enters through the gas circuit connector 17 to form an oil-gas test environment. The oil seal 20 seals the oil, and an O-ring 21 is used at the oil seal. The dust cover 14 prevents dust from entering, making the oil purer. The temperature sensors 27 are respectively installed near the outer oil-gas seal ring 12 and near the oil-gas seal lip. By measuring the temperature here, it can be approximately considered that the measured temperature is the oil temperature of the oil-gas seal test environment. The oil is heated by a heating plate 2. When the temperature sensor measures the ideal test environment temperature, the power of the heating plate is reduced to keep the oil approximately at a constant temperature. At this time, the service life of the oil-gas seal at a fixed temperature can be tested. This method equivalently replaces the oil-gas environment that heats up due to mechanical friction, greatly improving the test efficiency.

[0021] The present invention uses the method of heating the oil temperature and dissipating heat through a radiator to simulate the usage environment of a real oil-gas seal. While traditional test benches can only reach the test temperature of the oil-gas seal at high speeds by the mechanical friction caused by the rotation of the bearings 19 to raise the temperature. The device of the present invention improves the test efficiency of the oil-gas seal.

[0022] In summary, the above are only the preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An oil and gas seal testing device, characterized in that, It includes an oil tank, a heating plate, a filter, a gear pump, a radiator, an oil-gas seal environmental test bench, a thermal resistor, a temperature sensor, a coupling, a torque meter, and a variable-frequency motor. Among them, the heating plate is built into the oil tank to heat the oil. The filter filters out the poor heat conductors in the oil. The gear pump is connected to the inlet pipe and the outlet pipe, enabling the oil to enter the oil-gas seal test bench through the inlet pipe in the device and then return to the oil tank through the outlet pipe. The radiator is installed between the gear pump and the oil-gas seal environmental test bench for heat dissipation to lower the oil temperature. The thermal resistor and the temperature sensor are built into the oil tank to measure the temperature of the oil in the tank. The variable-frequency motor, the torque meter, and the oil-gas seal test bench are connected by a coupling. The torque meter and the variable-frequency motor drive the test oil-gas seal to rotate, and the service life of the oil-gas seal under the ideal oil temperature is measured using the oil-gas seal test bench. In the oil-gas seal environmental test bench, the oil circulates inside the environmental test bench through an oil circuit joint, and the gas enters through a gas circuit joint to form an oil-gas test environment. The oil seal seals the oil, and temperature sensors are respectively installed near the outer ring of the oil-gas seal and near the oil-gas seal lip. By measuring the temperatures near the outer ring of the oil-gas seal and near the oil-gas seal lip, the measured temperatures are considered to be the oil temperatures of the oil-gas seal test environment. The oil temperature is raised by the heating plate. When the ideal test environment temperature is measured by the temperature sensor, the power of the heating plate is reduced to keep the oil approximately at a constant temperature. At this time, the service life of the test oil-gas seal at a fixed temperature is measured.

2. The device according to claim 1, characterized in that, An O-ring is used at the oil seal, and a dust cover is used to prevent dust from entering.

3. The device according to claim 1, characterized in that A protective cover is provided outside the oil-gas seal environmental test bench.

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