CN112129462A - Testing method of high-speed friction magnetic sealing testing device - Google Patents

Abstract

A test method for a high-speed friction magnetic seal test device relates to a device test method. The test device of the invention uses a cavity base to fix a cylindrical cavity and a resistance shaft above the chassis, and rotates the resistance shaft to drive a gear shaft and a test object. The magnetic seal rotates at high speed 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 cylinder cavity. The stainless steel oil inlet pipe connects the oil tank and the cylinder cavity. It drips on the magnetic seal, and the excess oil flows back to the oil tank after cooling by the heat exchanger, and the leaked oil is tested and enters the oil cup. The invention is suitable for testing the tightness of various sealing parts, and the equipped resistance shaft has large torque, large acceleration, fast speed increase, large torque at low speed, and high rotation 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 for testing and research.

Description

A test method for a high-speed friction magnetic seal test device

technical field

The invention relates to a testing method of a testing device, in particular to a testing method of a high-speed friction magnetic seal testing device.

Background technique

With the continuous and rapid development of China's scientific and technological level, the demand for scientific research is increasing, and the problems and tests faced also increase. Although the sealing test device is popular to a certain extent, the existing friction sealing test device cannot meet today's requirements. The traditional friction seal test devices are all standardized equipment with strict and single requirements for testing seals. There are also some problems that are not reasonable and inconvenient in the use experience, especially the resistance shaft torque provided by the traditional friction test device is not enough. Large and low speed, it is easy to lock up at the beginning of the test, and 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 structure is complex, the operation is not stable enough, the user experience is not good, and the problems of high cost need to be solved urgently.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a test method for a high-speed friction magnetic seal test device. According to the different magnetic seals to be tested, the present invention can flexibly replace the gear shaft used for connecting with the cavity door cover of the cylindrical cavity to the corresponding matching components. It is suitable for testing the tightness of various seals.

The purpose of this invention is to realize through the following technical solutions:

A test method for a high-speed friction magnetic seal test device, the device test method comprises the following steps:

First turn on the power supply, and illuminate inward from the lighting window, the fuel 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 to accelerate; when the resistance shaft speed reaches 6000m/s, the test starts, and the camera The recording equipment connected to the recording window starts recording, the metering pump pumps out the lubricating oil heated to the required temperature by the heating tube from the oil tank through the stainless steel tube, and the gas cylinder is connected to the cylindrical cavity through the stainless steel tube to keep its air pressure stable at 1.013X10^5pa; During the test, the resistance shaft continued to accelerate and rotate, and the maximum speed during this period could reach 30000m/s. The remaining lubricating oil flowed out from the cylindrical cavity, and after cooling to the normal temperature by the heat exchanger, it flowed into the oil tank to complete the cycle. , the oil leaked from the magnetic seal will leak into the transparent oil cup; after the test, measure the amount of oil leaking in the oil cup, when the oil leakage does not exceed 1%, it means that the tested magnetic seal meets the national sealing standard, Meet the required level, otherwise it will not meet the standard.

In the test method for a high-speed friction magnetic seal test device, the resistance shaft drives the gear shaft and the magnetic seal to rotate at high speed, and the speed is adjustable, and the maximum speed is 30000m/s.

The test method for a high-speed friction magnetic seal test device, the test device includes a cylindrical cavity, a cavity base, a heat exchanger, an electric stirrer, a gas cylinder, a fuel tank, a metering pump, a heating tube, a video recording Window, lighting window, chassis, oil cup, tapered tube, resistance shaft, gear shaft, magnetic seal, air inlet pipe, oil inlet pipe; the high-speed friction seal test equipment is to fix the cylindrical cavity and the resistance shaft by the cavity base Above the bottom frame, the gear shaft and the tested magnetic seal are rotated at high speed through the rotation of the resistance 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, and the stainless steel oil inlet pipe is connected to the fuel tank. And the cylinder cavity, the oil in the oil tank is pumped by the metering pump and drips on the magnetic seal, the excess oil is cooled by the heat exchanger and flows back to the oil tank, and the leaked oil is tested and enters the oil cup; the oil in the oil tank passes through the electric stirrer The stirring is driven and heated by the heating pipe; the oil tank is placed under the cylinder cavity and on the chassis, 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, and 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 conical tube, and the gear shaft is used as a connecting structure to connect the resistance shaft and the magnetic seal and place them in the middle.

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

In the test method of the high-speed friction magnetic seal test device, the camera and the lighting window can be connected to external cameras and lighting devices respectively, so that the high-speed friction seal test device is more convenient for testers to observe, record and study, thereby improving the performance of the tester. Test efficiency and experience.

The beneficial effects of the present invention are:

1. The high-speed friction seal test device of the present invention is driven by the resistance shaft to drive the gear shaft and the magnetic seal. The equipped resistance shaft has large torque at low speed, large acceleration, and fast speed increase, and can reach up to 30000m/s at high speed. According to the test piece— Different magnetic seals, the gear shaft used to connect the cavity door cover of the cylindrical cavity can be flexibly replaced with the corresponding matching components for testing. It has a compact structure, small footprint, reasonable and beautiful arrangement of components, especially It is suitable for testing the tightness of various seals, with high efficiency, low failure rate, good adaptability to different test pieces, stable operation of the driving mechanism and higher safety. The equipped lighting window and recording window can play an excellent auxiliary role for testing and research.

2. The resistance shaft equipped in the present invention has large torque, large acceleration when starting, no lock-up and other faults, fast acceleration, high rotation speed at high speed, and the maximum rotation speed can reach 30000m/s.

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

4. The recording window 9 and the lighting window 10 of the present invention can be connected to external cameras and lighting equipment respectively, so that the high-speed friction seal test device is more convenient for testers to observe, record and study the test, thereby improving the test efficiency and experience.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present invention;

FIG. 2 is a top view of FIG. 1 .

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

Detailed ways

The present invention will be described in detail below with reference to the embodiments shown in the accompanying drawings. These drawings are all simplified schematic diagrams, and only illustrate the basic structure of the present invention in a schematic manner, so they only show the structures related to the present invention.

A high-speed friction seal test device as shown in Figure 1 and Figure 2, the device 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. Heating tube 8, video recording window 9, lighting window 10, chassis 11, oil cup 12, tapered tube 13, resistance shaft 14, gear shaft 15, magnetic seal 16, air inlet pipe 17, oil inlet pipe 18; high speed The friction seal test device is to fix the cylindrical cavity 1 and the resistance shaft 14 above the base frame 11 by the cavity base 2, and the rotation of the resistance shaft 14 drives the gear shaft 15 and the tested magnetic seal 16 to rotate at a high speed, and the speed is adjustable. , the test starts when the speed reaches 6000m/s and the speed continues to increase during the period, 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 is stable, the oil tank 6 and the cylindrical cavity 1 are connected by the stainless steel oil inlet pipe 18, the oil in the oil tank 6 is pumped by the metering pump 7 and drips onto the magnetic seal 16, and the excess oil is cooled from the high temperature to the Return to the oil tank 6 at room temperature, test the leaked oil into the oil cup 12, and judge whether the sealing condition of the magnetic seal 16 is good by observing the amount of oil leakage in the oil cup 12. The oil in the oil tank 6 is stirred by the electric stirrer 4, and the rotation speed is kept at 60-120 r/min, and is heated by the heating pipe 8. The oil tank 6 is placed under the cylindrical cavity 1 and on the chassis 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, and the electric mixer 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 conical tube 13, and the gear shaft 15 is used as a connecting structure to connect the resistance shaft 14 and the magnetic seal 16 and place them in the middle. At the end of the test, if the amount of oil leakage in the oil cup 12 is not more than 1%, the magnetic seal 16 meets the national sealing standard, otherwise it fails to meet the standard. The above components cooperate to form a high-speed friction seal test device.

A test method for a high-speed friction seal test device is as follows: the lighting device starts and illuminates inward from the lighting window 10, the fuel tank stirrer 4 starts to run at a speed of 60 r/min, and the resistance shaft 14 drives the gear shaft 15 and the magnetic seal 16 to start to accelerate and rotate. When the rotating speed of the resistance shaft 14 reaches 6000m/s, the test starts, the recording equipment connected to the recording window 9 starts to record, and the metering pump 7 pumps out the stainless steel pipe from the oil tank 6 to the test piece part and is heated to the demand by the heating pipe 8 The temperature of lubricating oil, the gas cylinder 5 is connected to the cylindrical cavity 1 through a stainless steel pipe to keep its air pressure stable at 1.013X10^5pa; during the test, the resistance shaft 14 continues to accelerate and rotate, and the maximum speed during the period can reach 30000m/s, the remaining lubricating oil It flows out from the cylindrical cavity 1 and flows into the oil tank 6 after being cooled to a normal temperature by the heat exchanger 3 to complete the cycle. The oil leaked from the magnetic seal 16 leaks into the transparent oil cup 12; after the test, the measuring oil cup The amount of oil leaked in 12. When the amount of oil leakage is less than 1%, it means that the tested magnetic seal 16 meets the national sealing standard and meets the required level. Otherwise, it fails to meet the standard; The stainless steel tube, the magnetic seal is connected to the gear shaft, the gear shaft is connected to the resistance shaft, the resistance shaft drives the two to rotate at a high speed to 6000m/s, and the test starts. A heat exchanger is connected under the cylindrical cavity, and the heat exchanger is connected Cylinder cavity and fuel tank, the top of the fuel tank is equipped with an electric stirrer to stir the oil in the fuel tank, the bottom of the fuel tank is connected with a heating flange and a heating pipe extends into it, and an observation window is left on the top of the cylinder cavity for lighting and recording inside 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 testing device that drives the high-speed rotation through the resistance shaft and judges and tests the sealing degree of the magnetic seal based on the oil leakage. When the oil leakage of the test result is less than 1%, it can be tested that the magnetic seal meets the national sealing standard and reaches the required level.

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

The cylindrical cavity and the chassis are fixed by the cavity base. The cylindrical cavity is connected with the oil tank and the gas cylinder by stainless steel pipes, in which the metering pump is passed in the middle of the oil inlet pipe, and the heat exchanger is passed in the middle of the oil outlet pipe. The electric mixer is inserted directly below the liquid level in the fuel tank from the top of the fuel tank.

Taking the above ideal embodiments according to the present invention as inspiration, and through the above description, relevant personnel can make various changes and modifications without departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the contents in the specification, and the technical scope must be determined according to the scope of the claims.

Claims (5)

1. a high-speed friction magnetic seal testing device testing method, is characterized in that, described device testing method comprises the following process: First start the power supply and illuminate inward from the lighting window (10), the fuel tank agitator (4) starts to run at a speed of 60r/min, the resistance shaft (14) drives the gear shaft (15) and the magnetic seal (16) to accelerate the rotation ;When the rotating speed of the resistance shaft (14) reaches 6000m/s, the test starts, the recording equipment connected to the recording window (9) starts to record, and the metering pump (7) pumps the stainless steel pipe from the oil tank (6) to the test piece part The lubricating oil heated to the required temperature by the heating pipe (8) is discharged, and the gas cylinder (5) is connected to the cylindrical cavity (1) through a stainless steel pipe to keep its air pressure stable at 1.013X10^5pa; during the test, the resistance shaft (14) The rotation speed is up to 30000m/s during the period of continuous acceleration. The remaining lubricating oil flows out from the cylindrical cavity (1), cools down to the normal temperature through the heat exchanger (3) and flows into the oil tank (6), completing the cycle, the magnetic force The oil leaking from the seal (16) will leak into the transparent oil cup (12); after the test, measure the amount of oil leaking in the oil cup (12). Pieces (16) meet the national sealing standard and meet the required level, otherwise it does not meet the standard. 2 . The method for testing a high-speed friction magnetic seal test device according to claim 1 , wherein 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 rotational speed is 30000m/s. 3 . 3. A method for testing a high-speed friction magnetic seal testing device according to claim 1, wherein the testing device comprises a cylindrical cavity (1), a cavity base (2), a heat exchanger (3) ), electric stirrer (4), gas cylinder (5), fuel tank (6), metering pump (7), heating pipe (8), recording window (9), lighting window (10), chassis (11) , oil cup (12), tapered tube (13), resistance shaft (14), gear shaft (15), magnetic seal (16), air inlet pipe (17), oil inlet pipe (18); high-speed friction seal test equipment The cylindrical cavity (1) and the resistance shaft (14) are fixed above the chassis (11) by the cavity base (2), and the gear shaft (15) and the magnetic seal to be tested are driven by the rotation of the resistance shaft (14). The parts (16) rotate at high speed and 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, and the stainless steel oil inlet pipe (18) is connected to the fuel tank (6). ) and the cylindrical cavity (1), the oil in the oil tank (6) is pumped by the metering pump (7) and drips onto the magnetic seal (16), and the excess oil is cooled by the heat exchanger (8) and flows back to the oil tank (6), the oil leaked from the test enters the oil cup (12); the oil in the oil tank (6) is stirred by the electric stirrer (4) and heated by the heating pipe (8); the oil tank (6) is placed in the cylindrical cavity (1) Below, on the chassis (11), the metering pump (7) is installed on the side of the fuel tank (6) and connected to the fuel inlet pipe (18), the gas cylinder (5) is placed on the other side of the fuel tank (6), and the electric mixer (4) 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 conical tube (13), and the gear shaft (15) is connected as a connecting structure The resistive shaft (14) and the magnetic seal (16) are juxtaposed between them. 4. A test method for a high-speed friction magnetic seal test device according to claim 1, wherein the gear shaft (15) of the connecting shaft and some other components are customized with the replacement of the magnetic seal (16). Replacement, making the high-speed friction seal test equipment suitable for different seal tests. 5 . The method for testing a high-speed friction magnetic seal test device according to claim 1 , wherein the recording window (9) and the lighting window (10) are respectively connected to external cameras and lighting equipment, so that the high-speed friction seal test can be performed. 6 . The equipment is convenient for testers to observe, record and study the test, and improve the test efficiency and experience.

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