A testing method for high-speed friction magnetic seal testing device

Abstract

A high-speed friction magnetic seal test device test method relates to a device test method. The test device of the present invention fixes a cylindrical cavity and a resistance shaft above a chassis by a cavity base, and drives the gear shaft and the tested magnetic seal to rotate at high speed through the rotation of the resistance shaft, and the speed is adjustable. At the same time, a stainless steel air inlet pipe is connected to the gas cylinder to maintain the air pressure in the cylindrical cavity stable. A stainless steel oil inlet pipe is connected to the oil tank and the cylindrical cavity. The oil in the oil tank is pumped into the magnetic seal by a metering pump and drips on the magnetic seal. The excess oil is cooled by a heat exchanger and flows back to the oil tank. The leaked oil enters the oil cup. The present invention is suitable for testing the sealing of various seals. The resistance shaft equipped has large torque, large acceleration, fast speed-up, large torque at low speed, and high speed at high speed. It has high efficiency, low failure rate, good adaptability to different test pieces, stable operation of the drive mechanism, and higher safety. The equipped lighting window and recording window can play an excellent auxiliary role in testing and research.

Description

Technical Field

[0001] The invention relates to a testing method for a testing device, in particular to a testing method for a high-speed friction magnetic sealing testing device. Background Art

[0002] As China's science and technology level continues to develop at a high speed, the demand for scientific research is increasing, and the problems and challenges faced are also increasing. Although the sealing test device has been popularized to a certain extent, the existing friction seal test device cannot meet today's requirements. Traditional friction seal test devices are all standardized equipment that are strictly single in requirements for testing seals. There are also some unreasonable and inconvenient problems in the use experience. In particular, the resistance shaft torque equipped with the traditional friction test device is not large enough and the speed is low, which is easy to lock at the beginning of the test. During the experiment, the experimenter can only observe through a small observation window, and cannot observe the experimental process more intuitively, which reduces the experimental efficiency. Its complex structure, unstable operation, poor user experience, high cost and other problems need to be solved urgently. Summary of the invention

[0003] The purpose of the present invention is to provide a testing method for a high-speed friction magnetic seal testing device. According to the different magnetic seals being tested, the cavity door cover of the gear shaft and the cylindrical cavity used for connection can be flexibly replaced with corresponding matching parts for testing, and is suitable for testing the sealing of various seals.

[0004] The objective of the present invention is achieved through the following technical solutions:

[0005] A testing method for a high-speed friction magnetic seal testing device, the device testing method comprising the following steps:

[0006] First, start the power supply and illuminate from the lighting window. The oil tank agitator starts to run at a speed of 60r / min, and the resistance shaft drives the gear shaft and the magnetic seal to start accelerating. When the speed of the resistance shaft reaches 6000m / s, the test starts, and the recording device connected to the recording window starts recording. The metering pump pumps the lubricating oil heated to the required temperature by the heating tube from the oil tank to the test piece through the stainless steel pipe. The gas cylinder is connected to the cylindrical cavity through the stainless steel pipe to keep its air pressure stable at 1.013X10^5pa. During the test, the resistance shaft continues to accelerate, and the speed can reach up to 30000m / s. The remaining lubricating oil flows out of the cylindrical cavity, cools to normal temperature through the heat exchanger, and flows into the oil tank to complete the cycle. The oil leaked from the magnetic seal leaks into the transparent oil cup. After the test, the amount of oil leaked in the metering oil cup is measured. When the oil leakage does not exceed 1%, it means that the tested magnetic seal has reached the national sealing standard and meets the required level. Otherwise, it does not meet the standard.

[0007] In the testing method of the high-speed friction magnetic seal testing device, the speed at which the resistance shaft drives the gear shaft and the magnetic seal to rotate at high speed is adjustable, and the maximum speed is 30,000 m / s.

[0008] The testing method of a high-speed friction magnetic seal test device, the testing device includes a cylindrical cavity, a cavity base, a heat exchanger, an electric stirrer, a gas cylinder, an oil tank, a metering pump, a heating tube, a recording window, a lighting window, a chassis, an oil cup, a conical tube, a resistor shaft, a gear shaft, a magnetic seal, an air inlet pipe, and an oil inlet pipe; the high-speed friction seal test device is a cavity base that fixes the cylindrical cavity and the resistor shaft above the chassis, and the gear shaft and the magnetic seal to be tested are driven to rotate at a high speed by the rotation of the resistor shaft, and the speed is adjustable. At the same time, the stainless steel air inlet pipe is connected to the gas cylinder to maintain the air pressure in the cylindrical cavity stable. The oil tank and the cylindrical cavity are connected by a stainless steel oil inlet pipe. The oil in the oil tank is pumped into the oil tank through a metering pump and drips onto the magnetic seal. The excess oil is cooled by the heat exchanger and flows back to the oil tank. The leaked oil is tested and enters the oil cup. The oil in the oil tank is stirred by an electric stirrer and heated by a heating pipe. The oil tank is placed below the cylindrical cavity and on the base frame. The metering pump is installed on the side of the oil tank and connected to the oil inlet pipe. The gas cylinder is placed on the other side of the oil tank. The electric stirrer is installed above the oil tank. The heat exchanger is connected below the cylindrical cavity and above the oil tank through a tapered tube. The gear shaft serves as a connecting structure to connect the resistance shaft and the magnetic seal and is placed between the two.

[0009] In the testing method of the high-speed friction magnetic seal testing device, the gear shaft of the connecting shaft and some other components can be customized and replaced along with the replacement of the magnetic seal, so that the high-speed friction seal testing equipment is suitable for testing various seals.

[0010] In the testing method of the high-speed friction magnetic seal testing device, the recording window and the lighting window can be connected to external video and lighting equipment respectively, making the high-speed friction seal testing device more convenient for testers to observe, record and study the test, thereby improving the test efficiency and experience.

[0011] The beneficial effects of the present invention are:

[0012] 1. The device for high-speed friction seal testing of the present invention is driven by a resistance shaft to drive a gear shaft and a magnetic seal. The resistance shaft has a large torque, a large acceleration, and a fast speed at low speed. It can reach up to 30,000 m / s at high speed. According to the different tested parts - magnetic seals, the gear shaft and the cavity door cover of the cylindrical cavity used to connect can be flexibly replaced with corresponding matching parts for testing. It has a compact structure, small footprint, reasonable and beautiful parts arrangement, and is particularly suitable for testing the sealing of various seals. It has high efficiency, low failure rate, good adaptability to different test parts, stable operation of the driving mechanism, and higher safety. The equipped lighting window and recording window can play an excellent auxiliary role in testing and research.

[0013] 2. The resistance shaft equipped in the present invention has a large torque, a large acceleration when starting, no locking and other faults will occur, fast acceleration, high speed at high speed, and the maximum speed can reach 30000m / s.

[0014] 3. The gear shaft 15 and some other components of the present invention, which serve as the connecting shaft, can be customized and replaced along with the replacement of the model of the magnetic seal 16, so that the high-speed friction seal test device is suitable for testing various models of seals.

[0015] 4. The recording window 9 and the lighting window 10 of the present invention can be connected to external video and lighting equipment respectively, making the high-speed friction seal test device more convenient for testers to observe, record and study the test, thereby improving the test efficiency and experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 for Figure 1 Top view of the .

[0018] In the figure: cylindrical cavity 1, cavity base 2, heat exchanger 3, electric stirrer 4, gas cylinder 5, oil tank 6, metering pump 7, heating tube 8, recording window 9, lighting window 10, base frame 11, oil cup 12, tapered tube 13, resistor shaft 14, gear shaft 15, magnetic seal 16, air inlet pipe 17, oil inlet pipe 18. DETAILED DESCRIPTION

[0019] The present invention will be described in detail below in conjunction with the embodiments shown in the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0020] like Figure 1 , Figure 2A high-speed friction seal test device is shown, which includes a cylindrical cavity 1, a cavity base 2, a heat exchanger 3, an electric stirrer 4, a gas cylinder 5, an oil tank 6, a metering pump 7, a heating tube 8, a recording window 9, a lighting window 10, a base 11, an oil cup 12, a tapered tube 13, a resistor shaft 14, a gear shaft 15, a magnetic seal 16, an air inlet pipe 17, and an oil inlet pipe 18; the high-speed friction seal test device is a cavity base 2 that fixes the cylindrical cavity 1 and the resistor shaft 14 above the base 11, and the gear shaft 15 and the magnetic seal 16 to be tested are driven to rotate at a high speed by the rotation of the resistor shaft 14, and the speed is adjustable. The test starts when the speed reaches 6000m / s and the speed continues to increase during the test, reaching up to 30000m / s. At the same time, the stainless steel air inlet pipe 17 is connected to the gas cylinder 5 to maintain the air pressure in the cylindrical cavity 1 at 1.013X10^5pa. The stainless steel oil inlet pipe 18 is connected to the oil tank 6 and the cylindrical cavity 1. The oil in the oil tank 6 is pumped into the magnetic seal 16 by the metering pump 7. The excess oil is cooled from high temperature to room temperature through the heat exchanger 8 and flows back to the oil tank 6. The leaked oil is tested and enters the oil cup 12. The oil leakage in the oil cup 12 is observed to determine whether the sealing condition of the magnetic seal 16 is good. The oil in the oil tank 6 is stirred by the electric stirrer 4, and the speed is maintained at 60~120r / min, and heated by the heating tube 8. The oil tank 6 is placed below the cylindrical cavity 1 and on the base frame 11, the metering pump 7 is installed on the side of the oil tank 6 and connected to the oil inlet pipe 18, the gas cylinder 5 is placed on the other side of the oil tank 6, the electric stirrer 4 is installed above the oil tank 6, the heat exchanger 3 is connected below the cylindrical cavity 1 and above the oil tank 6 through the tapered tube 13, and the gear shaft 15 is used as a connecting structure to connect the resistor shaft 14 and the magnetic seal 16 and is placed between the two. At the end of the test, if the oil leakage in the oil cup 12 is measured by observation and does not exceed 1%, the magnetic seal 16 meets the national sealing standard, otherwise it does not meet the standard. The above components cooperate to form a high-speed friction seal test device.

[0021] A testing method for a high-speed friction seal testing device is as follows: a lighting device is started and illuminated inward from a lighting window 10, a fuel tank agitator 4 starts to run at a speed of 60 r / min, and a resistor shaft 14 drives a gear shaft 15 and a magnetic seal 16 to start accelerating rotation; when the speed of the resistor shaft 14 reaches 6000 m / s, the test starts, and the recording device connected to the recording window 9 starts recording, and a metering pump 7 pumps lubricating oil heated to a required temperature by a heating tube 8 from a fuel tank 6 to a test piece through a stainless steel pipe, and a gas cylinder 5 is connected to a cylindrical cavity 1 through a stainless steel pipe to keep its air pressure stable at 1.013X10^5 pa; during the test, the resistor shaft 14 continues to accelerate rotation, during which the speed can reach up to 30000 m / s, and the remaining lubricating oil flows out of the cylindrical cavity 1 and is cooled by a heat exchanger 3 After reaching the normal temperature, it flows into the oil tank 6 to complete the cycle. The oil leaked from the magnetic seal 16 leaks into the transparent oil cup 12. After the test, the amount of oil leaked in the oil cup 12 is measured. When the oil leakage does not exceed 1%, it means that the tested magnetic seal 16 has reached the national sealing standard and meets the required level. Otherwise, it does not meet the standard. The test cavity is connected to stainless steel pipes for air and oil inlet. The magnetic seal is connected to the gear shaft, and the gear shaft is connected to the resistor shaft. The resistance shaft drives the two to rotate at a high speed of 6000m / s before starting the test. A heat exchanger is connected below the cylindrical cavity, and the heat exchanger connects the cylindrical cavity and the oil tank. An electric stirrer is placed on the top of the oil tank to stir the oil in the oil tank. A heating pipe is connected to the bottom of the oil tank with a heating flange and extends into it. An observation window is left at the top of the cylindrical cavity to illuminate and record the inside of the cavity. A transparent oil cup is connected to one side of the magnetic seal of the cylindrical cavity. That is, a new type of high-speed friction seal test device that drives the resistance shaft to rotate at high speed and judges the sealing degree of the magnetic seal by the oil leakage. When the test result shows that the oil leakage does not exceed 1%, it can be tested that the magnetic seal meets the national sealing standards and reaches the required level.

[0022] The resistance shaft drives the gear shaft and magnetic seal to rotate at high speed and the speed is adjustable. The resistance shaft has large torque, large acceleration at startup, no locking and other faults, fast acceleration, high speed at high speed, and the test starts when the speed reaches 6000m / s. The speed can reach up to 30000m / s during the test.

[0023] The cylindrical cavity and the bottom frame are fixed by the cavity base. The cylindrical cavity is connected to the oil tank and the gas cylinder by stainless steel pipes, wherein the middle of the oil inlet pipe passes through the metering pump, and the middle of the oil outlet pipe passes through the heat exchanger. The electric stirrer is directly inserted from the top of the oil tank to below the liquid level in the oil tank.

[0024] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A testing method for a high-speed friction magnetic seal testing device, characterized in that: The device testing method The process includes: First, the power supply is turned on and the lighting is turned on from the lighting window (10). The oil tank agitator (4) starts to run at a speed of 60 r / min. The resistance shaft (14) drives the gear shaft (15) and the magnetic seal (16) to start accelerating. When the speed of the resistance shaft (14) reaches 6000 m / s, the test starts. The recording device connected to the recording window (9) starts recording. The metering pump (7) pumps the lubricating oil heated to the required temperature by the heating tube (8) from the oil tank (6) to the test piece through the stainless steel pipe. The gas cylinder (5) is connected to the cylindrical cavity (1) through the stainless steel pipe to maintain its gas pressure. The resistance shaft (14) is continuously accelerated during the test, and the maximum speed can reach 30000m / s. The remaining lubricating oil flows out of the cylindrical cavity (1), passes through the heat exchanger (3) and is cooled to normal temperature before flowing into the oil tank (6), completing the cycle. The oil leaked from the magnetic seal (16) leaks into the transparent oil cup (12). After the test, the amount of oil leaked from the oil cup (12) is measured. When the oil leakage does not exceed 1%, it indicates that the tested magnetic seal (16) has reached the sealing standard and meets the required level. Otherwise, it does not meet the standard. The test device comprises a cylindrical cavity (1), a cavity base (2), a heat exchanger (3), an electric stirrer (4), a gas cylinder (5), an oil tank (6), a metering pump (7), a heating tube (8), a recording window (9), an illumination window (10), a base (11), an oil cup (12), a conical tube (13), a resistor shaft (14), a gear shaft (15), a magnetic seal (16), an air inlet pipe (17), and an oil inlet pipe (18); the high-speed friction seal test device comprises a cavity base (2) which fixes the cylindrical cavity (1) and the resistor shaft (14) above the base (11); the gear shaft (15) and the magnetic seal (16) to be tested are driven to rotate at a high speed by the rotation of the resistor shaft (14); the speed is adjustable; at the same time, the stainless steel air inlet pipe (17) is connected to the gas cylinder (5) to maintain the air pressure in the cylindrical cavity (1) stable; the stainless steel oil inlet pipe (18) is connected to the gas cylinder (5) to maintain the air pressure in the cylindrical cavity (1) stable; ) connects the oil tank (6) and the cylindrical cavity (1), the oil in the oil tank (6) is pumped in by a metering pump (7) and drips onto the magnetic seal (16), the excess oil is cooled by a heat exchanger (8) and flows back to the oil tank (6), and the leaked oil is tested and enters the oil cup (12); the oil in the oil tank (6) is stirred by an electric stirrer (4) and heated by a heating pipe (8); the oil tank (6) is placed below the cylindrical cavity (1) and on a base frame (11), the metering pump (7) is installed on the side of the oil tank (6) and connected to the oil inlet pipe (18), the gas cylinder (5) is placed on the other side of the oil tank (6), the electric stirrer (4) is installed above the oil tank (6), the heat exchanger (3) is connected to the bottom of the cylindrical cavity (1) and the top of the oil tank (6) through a tapered pipe (13), and the gear shaft (15) is used as a connecting structure to connect the resistance shaft (14) and the magnetic seal (16) and is placed between the two.

2. A high-speed friction magnetic seal test device test method according to claim 1, characterized in that: The speed at which the resistance shaft drives the gear shaft and the magnetic seal to rotate at high speed is adjustable, and the maximum speed is 30000m / s.

3. A high-speed friction magnetic seal test device test method according to claim 1, characterized in that: The gear shaft (15) of the connecting shaft and some other parts are customized and replaced along with the replacement of the magnetic seal (16), so that the high-speed friction seal test equipment is suitable for testing different seals.

4. A high-speed friction magnetic seal test device test method according to claim 1, characterized in that: The recording window (9) and the lighting window (10) are respectively connected to external video and lighting equipment, so that the high-speed friction seal test equipment is convenient for test personnel to observe, record and study the test, thereby improving the test efficiency and experience.

Images