CN112129462A - Testing method of high-speed friction magnetic sealing testing device - Google Patents
Testing method of high-speed friction magnetic sealing testing device Download PDFInfo
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- CN112129462A CN112129462A CN202011022514.9A CN202011022514A CN112129462A CN 112129462 A CN112129462 A CN 112129462A CN 202011022514 A CN202011022514 A CN 202011022514A CN 112129462 A CN112129462 A CN 112129462A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
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Abstract
A test method for a high-speed friction magnetic seal test device relates to a device test method, and is characterized in that a cylindrical cavity and a resistance shaft are fixed above a bottom frame by a cavity base, the resistance shaft rotates to drive the gear shaft and a tested magnetic seal to rotate at a high speed, the speed is adjustable, meanwhile, a stainless steel air inlet pipe is connected with an air cylinder to maintain the air pressure in the cylindrical cavity to be stable, a stainless steel oil inlet pipe is connected with an oil tank and the cylindrical cavity, oil in the oil tank is pumped into the oil tank through a metering pump and drips on the magnetic seal, redundant oil flows back to the oil tank through a heat exchanger for cooling, and the leaked oil for testing enters an oil cup. The invention is suitable for testing the sealing performance of various sealing elements, and the equipped resistance shaft has large torque, large acceleration, high speed, large torque at low speed and high rotating speed at high speed. The test device has the advantages of 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 the camera window can play an excellent auxiliary role in testing and research.
Description
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 sealing testing device.
Background
With the continuous and rapid development of the science and technology level of China, the scientific research requirements are increased day by day, the problems and tests faced are also increased, and although the sealing test device is popularized to a certain extent, the existing friction sealing test device cannot meet the current requirements. Traditional friction seal testing arrangement all is the standardized equipment of the discourse, and strict single to the requirement of testing the sealing member, also there are some reasonable inadequately, convenient enough problems in using experience, especially the resistance shaft moment of torsion that traditional friction testing arrangement was equipped with is big enough and the rotational speed is low, appears locking phenomenon easily when the test begins, and can only observe through small-size observation window at the experimenter in the experimentation, can't observe the experiment process more directly perceivedly, has drawn low efficiency. The problems of complex structure, unstable operation, poor use experience, high cost and the like need to be solved urgently.
Disclosure of Invention
The invention aims to provide a testing method of a high-speed friction magnetic seal testing device, according to different tested magnetic seals, a gear shaft for connecting with a cavity door cover of a cylindrical cavity can be flexibly replaced to a corresponding matched component for testing, and the testing method is suitable for testing the sealing performance of various seals.
The purpose of the invention is realized by the following technical scheme:
a method of testing a high-speed friction magnetic seal testing device, the device testing method comprising the steps of:
firstly, starting a power supply, illuminating inwards from an illuminating window, starting the operation of an oil tank stirrer at the rotating speed of 60r/min, and driving a gear shaft and a magnetic sealing element to start accelerated rotation by a resistance shaft; when the rotation speed of the resistance shaft reaches 6000m/s, the test is started, the recording equipment connected with the recording window starts to record, the metering pump pumps lubricating oil heated to the required temperature by the heating pipe from the oil tank to the part of the test piece through the stainless steel pipe, and the gas cylinder is connected with the cylinder cavity through the stainless steel pipe to keep the gas pressure stable to be 1.013X10^5 pa; in the test process, the resistance shaft continuously rotates in an accelerated manner, the rotating speed can reach 30000m/s at most, the residual lubricating oil flows out of the cylinder cavity, flows into the oil tank after being cooled to the normal temperature by the heat exchanger, the circulation is completed, and the oil leaked out of the magnetic sealing element leaks into the transparent oil cup; and after the test is finished, measuring the amount of oil leakage in the oil cup, and when the amount of oil leakage does not exceed 1%, indicating that the tested magnetic sealing element reaches the national sealing standard and meets the required level, otherwise, the oil leakage does not reach the standard.
According to the testing method of the high-speed friction magnetic seal testing device, the speed of the resistance shaft driving the gear shaft and the magnetic seal to rotate at high speed is adjustable, and the highest rotating speed is 30000 m/s.
The testing device comprises a cylindrical cavity, a cavity base, a heat exchanger, an electric stirrer, a gas cylinder, an oil tank, a metering pump, a heating pipe, a shooting window, an illuminating window, a bottom frame, an oil cup, a conical pipe, a resistance shaft, a gear shaft, a magnetic sealing element, a gas inlet pipe and a gas inlet pipe; the high-speed friction seal testing equipment is characterized in that a cylindrical cavity and a resistance shaft are fixed above an underframe by a cavity base, the resistance shaft rotates to drive a gear shaft and a tested magnetic sealing element to rotate at a high speed, the speed is adjustable, meanwhile, a stainless steel air inlet pipe is connected with an air bottle to maintain the stable air pressure in the cylindrical cavity, a stainless steel oil inlet pipe is connected with an oil tank and the cylindrical cavity, oil in the oil tank is pumped into the magnetic sealing element by a metering pump and drips on the magnetic sealing element, redundant oil flows back to the oil tank after being cooled by a heat exchanger, and the leaked oil for testing enters an oil cup; the oil in the oil tank is driven to stir by an electric stirrer and is heated by a heating pipe; the oil tank is arranged below the cylinder cavity and on the bottom frame, the metering pump is installed on the side surface of the oil tank and connected with an oil inlet pipe, the gas cylinder is placed on the other side surface of the oil tank, the electric stirrer is installed above the oil tank, the heat exchanger is connected below the cylinder cavity and above the oil tank through the conical pipe, and the gear shaft is connected with the resistance shaft and the magnetic sealing element as a connecting structure and is arranged between the resistance shaft and the magnetic sealing element.
According to the testing method of the high-speed friction magnetic seal testing device, the gear shaft of the connecting shaft and part of other parts can be customized and replaced along with the replacement of the magnetic sealing element, so that the high-speed friction seal testing device is suitable for testing various sealing elements.
According to the testing method of the high-speed friction magnetic sealing testing device, the shooting window and the lighting window can be respectively externally connected with shooting and lighting equipment, so that the high-speed friction sealing testing equipment is more convenient for testers to carry out test observation, record and research, and the testing efficiency and experience are improved.
The invention has the beneficial effects that:
1. the high-speed friction seal testing device is characterized in that a resistance shaft drives a gear shaft and a magnetic sealing element, the torque of the equipped resistance shaft is large at low speed, the acceleration is large, the speed is increased quickly, the highest speed can reach 30000m/s, according to different tested pieces and magnetic sealing elements, a gear shaft for connecting the gear shaft and a cavity door cover of a cylinder cavity can be flexibly replaced to corresponding matched parts for testing, the structure is compact, the occupied area is small, the parts are reasonably arranged and attractive, the high-speed friction seal testing device is particularly suitable for testing the sealing performance of various sealing elements, the efficiency is high, the failure rate is low, the adaptability to different tested pieces is good, the driving mechanism runs stably, and the safety is higher. The equipped lighting window and the camera window can play an excellent auxiliary role in testing and research.
2. The resistance shaft provided by the invention has large torque, large acceleration during starting, no faults such as locking and the like, high acceleration speed, high rotating speed at high speed, and the highest rotating speed can reach 30000 m/s.
3. The gear shaft 15 and part of other parts as the connecting shaft of the invention can be customized and replaced along with the replacement of the model of the magnetic sealing piece 16, so that the high-speed friction sealing testing device is suitable for testing various models of sealing pieces.
4. The camera window 9 and the lighting window 10 can be respectively externally connected with camera and lighting equipment, so that the high-speed friction sealing test device is more convenient for test observation, record and research of testers, and the test efficiency and experience are improved.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a top view of fig. 1.
In the figure: the 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 pipe 8, a shooting window 9, an illuminating window 10, a bottom frame 11, an oil cup 12, a conical pipe 13, a resistance shaft 14, a gear shaft 15, a magnetic sealing piece 16, an air inlet pipe 17 and an oil inlet pipe 18.
Detailed Description
The present invention will be described in detail with reference to the embodiments shown in the drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
The high-speed friction seal testing device shown in fig. 1 and 2 comprises a cylindrical cavity 1, a cavity base 2, a heat exchanger 3, an electric stirrer 4, an air bottle 5, an oil tank 6, a metering pump 7, a heating pipe 8, a shooting window 9, an illuminating window 10, a bottom frame 11, an oil cup 12, a conical pipe 13, a resistance shaft 14, a gear shaft 15, a magnetic sealing piece 16, an air inlet pipe 17 and an oil inlet pipe 18; the high-speed friction seal testing device is characterized in that a cylindrical cavity 1 and a resistance shaft 14 are fixed above an underframe 11 by a cavity base 2, the gear shaft 15 and the tested magnetic sealing element 16 are driven to rotate at high speed through the rotation of the resistance shaft 14, the speed is adjustable, the test is started when the rotating speed reaches 6000m/s, the rotating speed is continuously increased during the period, the highest rotating speed can reach 30000m/s, meanwhile, a stainless steel air inlet pipe 17 is connected with an air bottle 5 to maintain the air pressure in the cylinder cavity 1 to be kept at 1.013X10^5pa stably, a stainless steel oil inlet pipe 18 is connected with an oil tank 6 and the cylinder cavity 1, oil in the oil tank 6 is pumped by a metering pump 7 and drops on a magnetic sealing element 16, redundant oil flows back to the oil tank 6 from high temperature to normal temperature through a heat exchanger 8, the leaked oil in the test enters an oil cup 12, whether the magnetic seal 16 is sealed well or not is judged by observing the amount of oil leakage from the oil cup 12. The oil in the oil tank 6 is driven to be stirred by the electric stirrer 4, the rotating speed is kept at 60-120 r/min, and the oil is heated by the heating pipe 8. The oil tank 6 is arranged below the cylinder cavity 1 and on the bottom frame 11, the metering pump 7 is arranged on the side surface of the oil tank 6 and is connected with the oil inlet pipe 18, the gas cylinder 5 is arranged on the other side surface of the oil tank 6, the electric stirrer 4 is arranged above the oil tank 6, the heat exchanger 3 is connected below the cylinder cavity 1 and above the oil tank 6 through the conical pipe 13, and the gear shaft 15 is connected with the resistance shaft 14 and the magnetic sealing piece 16 as a connecting structure and is arranged between the two. At the end of the test, if the amount of oil leakage in the oil cup 12 is not more than 1% by observation, the magnetic seal 16 meets the national seal standards, otherwise it does not meet the standards. The components are matched to form a high-speed friction sealing testing device.
A test method of a high-speed friction seal test device comprises the following steps: the lighting device is started and lights from the lighting window 10 inwards, the oil tank stirrer 4 starts to run at the rotating speed of 60r/min, and the resistance shaft 14 drives the gear shaft 15 and the magnetic sealing piece 16 to start to rotate in an accelerated way; when the rotating speed of the resistance shaft 14 reaches 6000m/s, the test is started, the recording equipment connected with the recording window 9 starts to record, the metering pump 7 pumps lubricating oil heated to the required temperature by the heating pipe 8 from the oil tank 6 to the part to be tested through the stainless steel pipe, and the gas cylinder 5 is connected with the cylinder cavity 1 through the stainless steel pipe to keep the gas pressure of the cylinder cavity to be 1.013X10^5 pa; in the test process, the resistance shaft 14 continuously rotates in an accelerated manner, the rotating speed can reach 30000m/s at most, the residual lubricating oil flows out of the cylinder cavity 1, flows into the oil tank 6 after being cooled to the normal temperature by the heat exchanger 3, the circulation is completed, and the oil leaked from the magnetic sealing piece 16 leaks into the transparent oil cup 12; after the test is finished, measuring the amount of oil leakage in the oil cup 12, and when the amount of oil leakage does not exceed 1%, indicating that the tested magnetic sealing element 16 reaches the national sealing standard and meets the required level, otherwise, the oil leakage does not reach the standard; the testing cavity is connected with a stainless steel pipe for air inlet and oil inlet, the magnetic sealing element is connected with a gear shaft, the gear shaft is connected with a resistance shaft, the resistance shaft drives the testing cavity and the resistance shaft to rotate at a high speed to 6000m/s, the heat exchanger is connected below the cylinder cavity and is connected with the cylinder cavity and an oil tank, an electric stirrer is arranged at the top of the oil tank to stir oil in the oil tank, a heating pipe is connected to the bottom of the oil tank through a heating flange and extends into the oil tank, and an observation window is reserved at the top of the cylinder cavity for illumination and shooting and recording. One side of the magnetic sealing element of the cylinder cavity is connected with a transparent oil cup. The novel high-speed friction seal testing device is driven by the resistance shaft to rotate at a high speed and judges and tests the sealing degree of the magnetic sealing element according to the oil leakage condition. When the oil leakage quantity of the test result is not more than 1%, the magnetic sealing piece can be tested to meet the national sealing standard and reach the required level.
The resistance shaft drives the gear shaft and the magnetic sealing element to rotate at a high speed and the speed is adjustable. The torque of the resistor shaft is large, the acceleration is large during starting, the faults such as locking and the like cannot be generated, the acceleration is fast, the rotating speed is high at high speed, the test is started when the rotating speed reaches 6000m/s, and the highest rotating speed can reach 30000m/s in the test process.
The cylinder cavity and the bottom frame are fixed by a cavity base. The cylinder cavity is connected with the oil tank and the gas cylinder through 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 into the oil tank from the top of the oil tank below the liquid level in the oil tank.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (5)
1. A testing method of a high-speed friction magnetic seal testing device is characterized by comprising the following steps:
firstly, starting a power supply, illuminating inwards from an illumination window (10), starting the operation of an oil tank stirrer (4) at the rotating speed of 60r/min, and driving a gear shaft (15) and a magnetic sealing piece (16) to start to rotate in an accelerated manner by a resistance shaft (14); when the rotating speed of the resistance shaft (14) reaches 6000m/s, the test is started, the recording equipment connected with the recording window (9) starts to record, the metering pump (7) pumps lubricating oil heated to the required temperature by the heating pipe (8) from the oil tank (6) to the part to be tested through the stainless steel pipe, and the gas cylinder (5) is connected with the cylinder cavity (1) through the stainless steel pipe to keep the gas pressure stable to be 1.013X10^5 pa; in the test process, the resistance shaft (14) continuously rotates in an accelerated manner, the rotating speed can reach 30000m/s at most, the residual lubricating oil flows out of the cylinder cavity (1), is cooled to normal temperature by the heat exchanger (3) and then flows into the oil tank (6), circulation is completed, and the oil leaked from the magnetic sealing element (16) leaks into the transparent oil cup (12); and after the test is finished, measuring the amount of oil leakage in the oil cup (12), and when the amount of oil leakage does not exceed 1%, indicating that the tested magnetic sealing element (16) reaches the national sealing standard and meets the required level, otherwise, the oil leakage does not reach the standard.
2. The testing method of the high-speed friction magnetic seal testing 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 rotating speed is up to 30000 m/s.
3. The testing method of the high-speed friction magnetic seal testing device according to claim 1, wherein the testing device comprises a cylinder cavity (1), a cavity base (2), a heat exchanger (3), an electric stirrer (4), a gas cylinder (5), a fuel tank (6), a metering pump (7), a heating pipe (8), a shooting window (9), an illuminating window (10), a chassis (11), an oil cup (12), a conical pipe (13), a resistance shaft (14), a gear shaft (15), a magnetic seal (16), a gas inlet pipe (17) and a gas inlet pipe (18); the high-speed friction seal testing equipment is characterized in that a cylinder cavity (1) and a resistance shaft (14) are fixed above an underframe (11) by a cavity base (2), the resistance shaft (14) rotates to drive a gear shaft (15) and a tested magnetic sealing element (16) to rotate at a high speed, the speed is adjustable, meanwhile, a stainless steel air inlet pipe (17) is connected with an air bottle (5) to maintain stable air pressure in the cylinder cavity (1), a stainless steel oil inlet pipe (18) is connected with an oil tank (6) and the cylinder cavity (1), oil in the oil tank (6) is pumped by a metering pump (7) and drips on the magnetic sealing element (16), redundant oil flows back to the oil tank (6) after being cooled by a heat exchanger (8), and the leaked oil for testing enters an oil cup (12); the oil in the oil tank (6) is driven to stir by the electric stirrer (4) and is heated by the heating pipe (8); cylinder cavity (1) below is arranged in oil tank (6), on chassis (11), measuring pump (7) are installed in oil tank (6) side and are connected into oil pipe (18), gas cylinder (5) are placed in oil tank (6) another side, install in oil tank (6) top electric stirrer (4), heat exchanger (3) are connected in cylinder cavity (1) below through conical tube (13), oil tank (6) top, gear shaft (15) connect resistance shaft (14) and magnetic seal spare (16) as connection structure and place in the middle of the two.
4. The testing method of the high-speed friction magnetic seal testing device is characterized in that the gear shaft (15) and part of other components of the connecting shaft are custom-replaced along with replacement of the magnetic seal (16), so that the high-speed friction seal testing device is suitable for different seal tests.
5. The testing method of the high-speed friction magnetic seal testing device according to claim 1, characterized in that the camera window (9) and the illumination window (10) are respectively externally connected with camera and illumination equipment, so that the high-speed friction seal testing equipment is convenient for testers to carry out test observation, recording and research, and the testing efficiency and experience are improved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011022514.9A CN112129462A (en) | 2020-09-25 | 2020-09-25 | Testing method of high-speed friction magnetic sealing testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011022514.9A CN112129462A (en) | 2020-09-25 | 2020-09-25 | Testing method of high-speed friction magnetic sealing testing device |
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| Publication Number | Publication Date |
|---|---|
| CN112129462A true CN112129462A (en) | 2020-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011022514.9A Pending CN112129462A (en) | 2020-09-25 | 2020-09-25 | Testing method of high-speed friction magnetic sealing testing device |
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| CN (1) | CN112129462A (en) |
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- 2020-09-25 CN CN202011022514.9A patent/CN112129462A/en active Pending
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