CN108760156B - Nuclear self-circulation oil pump and oil mechanical sealing performance test device for main pump - Google Patents
Nuclear self-circulation oil pump and oil mechanical sealing performance test device for main pump Download PDFInfo
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- CN108760156B CN108760156B CN201810824659.7A CN201810824659A CN108760156B CN 108760156 B CN108760156 B CN 108760156B CN 201810824659 A CN201810824659 A CN 201810824659A CN 108760156 B CN108760156 B CN 108760156B
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- 238000007789 sealing Methods 0.000 title claims abstract description 22
- 238000011056 performance test Methods 0.000 title abstract description 6
- 238000012360 testing method Methods 0.000 claims abstract description 49
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 3
- 239000003921 oil Substances 0.000 abstract description 146
- 239000010687 lubricating oil Substances 0.000 abstract description 23
- 238000013461 design Methods 0.000 abstract description 14
- 239000010724 circulating oil Substances 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000004807 localization Effects 0.000 abstract description 2
- 239000007787 solid Substances 0.000 abstract 1
- 230000002457 bidirectional effect Effects 0.000 description 9
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 7
- 239000000306 component Substances 0.000 description 6
- 238000001816 cooling Methods 0.000 description 4
- 239000002826 coolant Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 235000011187 glycerol Nutrition 0.000 description 3
- 238000012827 research and development Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000010723 turbine oil Substances 0.000 description 1
Classifications
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B51/00—Testing machines, pumps, or pumping installations
Abstract
The invention relates to a device for testing mechanical sealing performance of a self-circulating oil pump and an oil pump for a nuclear main pump, and results of two performance tests are obtained simultaneously. The structure design is compact, the concept innovation is advanced, the test data is real and reliable, the cost is saved, the economic benefit is improved, and a solid foundation is laid for localization of nuclear main pump design and application of products to real machine operation. The self-circulation oil pump oil impeller 27, the oil guide vane 28 and the oil mechanical seal assembly 29 are driven by a motor 26 with the rotating speed 1440r/min through a pair of first belt pulley 21 and second belt pulley 24 with the speed increasing ratio of 1.03471:1 to obtain the rotating speed 1490r/min which is the same as that of a true engine, and the technical data such as the pressure flow of lubricating oil of the self-circulation oil pump oil impeller 27 and the oil guide vane 28 are obtained through an oil way control system, so that the structural size of the oil impeller 27 is determined, and the sealing performance of a sample machine of the oil mechanical seal assembly 29 is verified at the same time in a test.
Description
Technical field: the invention relates to a test device for mechanical sealing performance of a self-circulation oil pump and an oil pump for a nuclear main pump.
The background technology is as follows: the reactor coolant pump oil supply system is an important core component in the reactor coolant pump structure, and directly relates to whether the nuclear main pump can safely and reliably operate in the nuclear power station. A set of oil supply systems is required to complete lubrication and cooling during the operation of the reactor coolant pump. The oil supply system consists of an oil impeller 27 and an oil guide vane 28, an oil mechanical seal assembly 29, an oil cooler 41, an oil sump 42, etc. mounted on a nuclear main pump, as shown in fig. 5. When the main pump is in normal operation, the oil impeller 27 and the oil guide vane 28 assembly becomes a self-circulation oil pump, so that the lubricating oil in the bearing body 39 reaches a certain flow rate and pressure, the lubricating oil is input into the bidirectional thrust bearing 38 and the oil-feeding radial bearing 40, the high-temperature oil lubricated by the rotating parts enters the oil cooler 41 for cooling and then returns to the oil pool 42, and the pressure oil is sent back into the bidirectional thrust bearing 38 and the oil-feeding radial bearing 40 by the oil impeller 27 through the oil guide vane 28, so that the self-circulation is formed by the circulation reciprocating lubrication and cooling. It follows that the oil impeller 27 and oil vane 28 assembly plays a critical role in the main pump operation oil supply system.
Because the project is the first stage of autonomous design and research and development in China, the oil impeller 27 and the oil guide vane 28 assembly are always imported from abroad, and no manufacturer in China grasps the technology. The temperature of the nuclear main pump bidirectional thrust bearing bush manufactured abroad is always higher, in order to solve the problem of higher bush temperature, the problem is solved by increasing the output oil quantity of lubricating oil, so three oil impellers 27 with different diameters are selected, and the following steps are 1:1, respectively testing on the same testing device, detecting the working performance and technical parameters of the three oil impellers 27, analyzing and comparing, and selecting the optimal group as a matching component of the bidirectional thrust bearing 38 for the main pump. Namely, under the normal working condition, the pressure flow value is compared with the pressure flow value under the actual working condition required by the disclosed bidirectional thrust bearing 38 to judge whether the technical requirement is met or not, and the structural size of the external profile of the blade of the unknown part oil impeller 27 is determined. This is one of the test objectives of the self-circulating oil pump and oil mechanical seal assembly 29 prototype performance test apparatus.
The oil impeller 27 and the oil guide vane 28 are important oil supply self-circulation oil pumps of the bidirectional thrust bearing, and the oil mechanical seal assembly 29 prevents the leakage of the lubricating oil during the operation of the self-circulation oil pump and ensures the normal and reliable operation of the main pump lubricating oil system. The oil mechanical seal assembly 29 is located in the bidirectional thrust bearing 38 below the oil impeller 27 and the oil guide vane 28, and whether the sealing performance is good or bad and the leakage amount is within the design allowable range is directly related to whether the lubricating oil system can work normally or not, and whether the nuclear main pump can work safely or not. The oil mechanical seal assembly 29 participating in the test is a product prototype, is an independent research and development project in China, and does not participate in the performance of the nuclear main pump, therefore, the self-circulation oil pump and the oil mechanical seal assembly 29 performance test device have the important purpose of simulating the actual working conditions of a true machine by the oil mechanical seal assembly 29 product prototype, the oil impeller 27 and the oil guide vane 28, detecting whether the sealing performance of the oil mechanical seal assembly 29 product prototype meets the design requirement, and providing powerful and sufficient test and product design basis.
The invention comprises the following steps: the invention aims to provide a test device for the self-circulation oil pump and oil mechanical sealing performance for a nuclear main pump, which is used for detecting the performance and technical parameters of a lubricating oil self-circulation oil pump through the test device, determining the outer contour structural dimension of an oil impeller blade of the self-circulation oil pump and taking the outer contour structural dimension as a design basis, verifying whether a product model machine of the oil mechanical sealing assembly meets the requirement of leakage amount or not, and ensuring the design integrity and the safe and reliable operation of the nuclear main pump. The technical scheme of the invention is as follows: the utility model provides a nuclear main pump is with self-loopa oil pump and oily mechanical seal performance's test device, motor 26 is fixed on base 15, second belt pulley 24 is connected with motor's spindle nose 43, first belt pulley 21 is fixed on spindle sleeve 10, first belt pulley 21, the outside of second belt pulley 24 all sets up belt cover 22, belt cover 22 is fixed on upper cover 8, first belt pulley 21 top is equipped with end cover 45, the central hole 54 of end cover 45 is inserted to the tachometer; the shell 13 is fixed on the base 15, the end cover 45 is connected with the shell 13 to form a closed structure, the long sleeve 9 is arranged in the main shaft sleeve 10, the main shaft sleeve 10 is supported and fixed on the mandrel 47 by two pairs of first pairs of tapered roller bearings 3 and second pairs of tapered roller bearings 19 which are different in size and of the same type, the first baffle ring 2 is arranged on the upper part of the first pairs of tapered roller bearings 3, the second baffle ring 5 is arranged on the lower part of the first pairs of tapered roller bearings 3, two thin thread nuts 46 on the first baffle ring 2 are pressed on the first pairs of tapered roller bearings 3, the mandrel 47 and the long sleeve 9 are locked, the oil mechanical seal assembly 29 is positioned on the lower part of the oil impeller 27, the oil mechanical seal assembly 29 is supported and placed in the guide ring 11 by eight compression springs, the oil guide vane 28 is fixed on the guide ring 11, the guide ring 11 is connected with the inner flange of the shell 13, the lower end cover 16 is fixed on the lower end part of the main shaft sleeve 10, eight groups of adjusting screws 12 which are overlapped up and down are arranged on the connecting bolt distribution circles of the lower end cover 16 and the main shaft sleeve 10, a cavity 52 of the test device and a rotating shaft sleeve 50 is provided with a rotating shaft seal housing 50, an oil collecting channel 50 is arranged between the upper end cover and a rotating shaft seal assembly and a rotating shaft housing 50, and a rotating shaft seal member 50 is arranged as a rotating shaft seal member 50.
The working principle of the invention is as follows:
the structure of the self-circulation oil pump and oil mechanical seal sample machine test device is that a shell is fixed on a base through bolts, a mandrel is combined with the base through bolts, and an upper cover is combined with the shell through bolts to form a closed structure. The main component spindle is supported by two pairs of first pair of tapered roller bearings and second pair of tapered roller bearings, the oil impeller on the spindle sleeve, the oil mechanical seal moving ring, the circular ring and other components form a rotating part, the rotating speed of the motor is 1440r/min, 7.5KW power is output, the first belt pulley is transmitted to the second belt pulley through two belts, the speed-increasing work is realized, and the rotating speed of the spindle sleeve is increased to 1490r/min, namely the same rotating speed as that of the nuclear main pump. The operation conditions of the oil impeller and the oil guide vane are the same as those of a true engine, the pressure and the flow data of the lubricating oil are tested, and meanwhile, the data of the leakage oil quantity of a prototype of the oil mechanical seal product is detected and obtained.
The invention has the technical advantages that:
1. the design scheme that the motor 26 drives the first belt pulley 21 and the second belt pulley 24 to transmit torque is adopted, so that the test device is stable in operation, low in vibration and accurate in test precision and detection data;
2. the motor 26 drives the first pulley 21 and the second pulley 24 to rotate, and then drives the rotating portion to rotate. It is important that the rotating part forms a unitary structure. The rotating part is the core of the test device. To ensure high rotational accuracy and to support a sufficient load, two pairs of high-accuracy first pair of tapered roller bearings 3 and second pair of tapered roller bearings 19 are used for supporting. The spindle sleeve 10 is provided with an oil impeller 27, an oil guide vane 28 and an oil mechanical seal assembly 29 for preventing lubricating oil from overflowing, and when the first pair of tapered roller bearings 3, the second pair of tapered roller bearings 19, the long sleeve 9, the first baffle ring 2, the second baffle ring 5, the two fine teeth Bao Luomao 46, the first pulley 21, the lower end cover 16, the spindle sleeve 10 and other components are respectively assembled into the spindle 47, it is a very important procedure to adjust the axial clearance between the first pair of tapered roller bearings 3 and the second pair of tapered roller bearings 19. The main shaft sleeve 10 and the lower end cover 16 are tightly clamped by bolts, the turning is preferably a proper amount of rotating parts which can be assembled into a whole in a rotating way, the lower end surface of the main shaft sleeve 10 is tightly propped by the adjusting screws 12, a micro gap is generated at the moment, the bolts on the lower end cover 16 are tightly screwed again, the above operation is repeated for several times, and finally, when the turning can be achieved and the effect is good, the turning is preferably realized, the other group of adjusting screws 12 are tightly propped on the lower end cover 16, and the loosening during operation is prevented. The upper end is locked by adopting two fine teeth Bao Luomao which are locked by fine threads, the rotating part is safely and stably fixed into a whole, and meanwhile, the measuring instrument is used for detecting axial and radial runout, so that the precision requirement of a test is met;
3. the side of the shell 13 is provided with an oil inlet 51 and an oil outlet 50 which are communicated with lubricating oil, and the test device is in a closed structure. The sealing performance directly influences the stability of the safe operation of the structure. The test device aims at testing the pressure and flow value of the lubricating oil of the oil impeller 27 and the oil guide vane 28 and detecting the leakage oil quantity data of the prototype of the oil mechanical seal assembly 29, so that no downward cavity from the lubricating oil can flow below the oil mechanical seal assembly 29, and the accuracy of the leakage oil quantity test data of the prototype of the oil mechanical seal can be ensured. Therefore, the first pair of tapered roller bearings 3 and the second pair of tapered roller bearings 19 supporting the spindle 47 are lubricated with dry yellow glycerin lubricant, and the inner end cap 16 is provided with a felt 18 to seal and prevent the yellow glycerin from overflowing, so as to prevent leakage. The upper end face of the shell 13 is sealed by adopting a rotary shaft lip seal ring 6, the lip seal ring 6 has a lip with large rebound capacity, a very narrow lip is radially contacted with a shaft by a hooping spring, the lip has good follow-up compensation property on the shaft, a good sealing effect is obtained by smaller lip radial force, the structure is simple, the size is compact, the sealing performance is good, the price is low, the overhaul is convenient, and the requirement on the working environment is not harsh;
4. the test device is provided with a test instrument for testing the rotating speed of the rotating part. In the belt cover 22, an end cover 45 is arranged at the upper end of the first belt pulley 21, and the test instrument is arranged at the center of the upper end of the end cover 45. Because the end cover 45 and the first belt pulley 21 are combined together, the first belt pulley 21 transmits torque through the flat key 1 and rotates simultaneously with the main shaft sleeve 10, so that whether the rotating speed of the rotating part is consistent with the design requirement can be accurately tested;
5. the oil outlet end of the base 15 is provided with a first gasket 31 and a second gasket 33 for sealing, and a first gasket 31 which is made of copper and is subjected to annealing softening treatment is adopted between the pipe joint 32 and the base 15, so that good material characteristics of the first gasket can well play a role in sealing and connecting. A second gasket 33 is also arranged above the pipe joint 32, and the pipe joint 32 is screwed tightly and sealed with the oil outlet through a nut 34. Thus, the leaked oil of the oil mechanical seal assembly 29 flows out of the cavity through the oil pipeline which has compact structure and good sealing, and accurate data are obtained.
The outer contour structural dimension of the vane of the oil impeller 27 of the self-circulation oil pump is determined through the test of the test device and is used as the design basis for product manufacture; the obtained real-time data such as the sealing performance, the leakage oil flow rate, the lubricating oil pressure and flow rate of the self-circulation oil pump and the like of the oil mechanical seal assembly 29 provide accurate and powerful technical support for the nuclear main pump bidirectional thrust bearing, bring a certain benefit to the reduction of the bush temperature of the bidirectional thrust bearing, and are beneficial to the safe and stable operation of the whole unit.
Description of the drawings:
FIG. 1 is a top view of a first pulley and a second pulley
FIG. 2 is a motor connection diagram
FIG. 3 oil mechanical seal oil outlet connecting pipe diagram
FIG. 4 schematic diagram of a test apparatus
FIG. 5 two-way thrust bearing assembly drawing
The specific embodiment is as follows:
as shown in fig. 4, in a test device for the mechanical sealing performance of a self-circulating oil pump and oil for a nuclear main pump, a housing 13 is fixed to a base 15, a spindle 47 is engaged with the base 15, an end cap 45 is connected to the housing 13 to form a closed structure, and a spindle 47 as a main component is supported by a first pair of tapered roller bearings 3 and a second pair of tapered roller bearings 19. The oil impeller 27, the oil guide vane 28 and the oil mechanical seal assembly 29 on the spindle sleeve 10 are driven by the motor 26, the first belt pulley 21 and the second belt pulley 24 with a certain rotating speed, and the pressure and flow data of the lubricating oil of the oil impeller 27 and the oil guide vane 28 of the self-circulation oil pump are tested through an oil path control system, and meanwhile the leakage oil sealing performance of a prototype of the oil mechanical seal assembly 29 is detected.
As shown in fig. 2, the second belt pulley 24 and the motor 26 are fixed on the base 15, the second belt pulley 24 and the shaft head 43 of the motor are in transition fit, torque is transmitted through the flat key 25 and locked by the set screw 44, the output power of the motor 26 is transmitted to the first belt pulley 21 by the second belt pulley 24, as shown in fig. 1, the first belt pulley 21 transmits the output power of the motor to the spindle sleeve 10 mounted on the first belt pulley 21, the belt cover 22 is arranged outside the first belt pulley 21 and the second belt pulley 24 and fixed on the upper cover 8 through the flat key 1 and the set screw 4, the end cover 45 is arranged above the first belt pulley 21, and the rotation speed meter is inserted into the central hole 54 on the end cover 45 to test the actual rotation speed of the spindle sleeve 10. As shown in fig. 4, the structure of the test device is that a main shaft sleeve 10 is mounted with an oil impeller 27 through a hexagon head bolt 49, an oil mechanical seal assembly 29 is positioned at the lower part of the oil impeller 27 and is supported in a guide ring 11 by eight compression springs, an oil guide vane 28 is fixed on the guide ring 11, the guide ring 11 is connected with an inner flange of a shell 13 located on a base 15 into a whole through bolts, a lower end cover 16 is fixed at the lower end part of the main shaft sleeve 10 through a hexagon head bolt 48, a felt ring 18 is arranged in the lower end cover 16 for sealing yellow glycerol for lubricating a conical large roller bearing 19, and eight groups of adjusting screws 12 which are overlapped up and down are simultaneously arranged on the distribution circle of the connecting bolts of the lower end cover 16 and the main shaft sleeve 10; the spindle sleeve 10 and the long sleeve 9 are supported and fixed on the spindle 47 by two pairs of first and second pairs of tapered roller bearings 3, 19 of different sizes, and the first and second retainer rings 2, 5 fixed on the upper and lower parts of the first pair of tapered roller bearings 3 on the long sleeve 9 form a lubricating oil region of the first pair of tapered roller bearings 3, isolating lubricating oil in this space. The two thin screw caps 46 of the thin teeth on the first baffle ring 2 are pressed on the first pair of tapered roller bearings 3 to lock the mandrel 47 and the long sleeve 9, the cavity of the test device is divided into a first cavity 52 and a second cavity 53, and an oil inlet 51 and an oil outlet 50 are arranged on the shell wall. The rotary shaft lip seal ring 6 is adopted to seal between the rotary part spindle sleeve 10 and the upper cover of the fixed part, so that lubricating oil can be prevented from overflowing, and the matching surfaces of all other relatively fixed parts are sealed by O-shaped sealing rings. The oil leakage of the oil mechanical seal assembly 29 model machine on the base 15 is shown in fig. 3, and an oil outlet formed by a first gasket 31, a second gasket 33, a pipe joint 32, a nut 34 and other parts is connected with an oil outlet pipe 35 to serve as a channel for collecting and measuring the oil leakage of the oil mechanical seal model machine.
Technical data has been disclosed for a self-circulating oil pump for lubricating oil in a bi-directional thrust bearing:
pressure: 2.9bar
Flow rate: 6.62kg/s
Lubricating oil: turbine Oil viscosityity (Viscosity) 32 cSt
The inlet temperature of the lubricating oil after cooling of the oil cooler is less than 60 DEG C
Test device revolution: n is n Test on test Drive motor power=1490 r/min: p=7.5 KW
Rotation speed of driving motor: n is n Motor with a motor housing ＝1440r/min
Motor pulley I diameter phi 250mm
1. A calculation part:
1. belt pulley design type determination
Motor speed ratio i=n Test on test /n Motor with a motor housing 1490/1440＝1.0347
Body pulley diameter = 250i = 260mm
Pulley model: 2 belts were chosen as determined by v=19.5 m/s
Selecting the center distance L of two belt pulleys Center distance ＝600mm
2. The values calculated for the three different specifications of oil impellers are shown in the following table:
2. description of the embodiments: the test device for testing the performance of the self-circulation oil pump and the oil mechanical sealing prototype for the main pump is driven by a motor 26 through a pair of first belt pulley 21 and second belt pulley 24 with a speed increasing ratio of 1.0347:1, so that the test device obtains the same rotating speed (n=1490 r/min) as a true machine as shown in fig. 1. The distance between the upper end face of the first belt pulley 21 on the main body of the test device and the upper end face of the second belt pulley 24 on the motor and the upper end face of the base 15 is required to be consistent, so that work is ensured to be done in the same horizontal plane.
Lubricating oil is fed into the upper cavity part of the test device housing 13 from the oil inlet through the oil delivery pipe. When the motor 26 outputs power and the first belt pulley 21 drives the test device to operate, the upper lubricating oil can be driven to the lower part by two spiral-line-like impeller curved surfaces of the oil impeller 27 as shown in fig. 5, a pressure area of 2.9bar is formed in the lower oil cavity, and meanwhile, oil of 6.62kg/s is generated and is output through an oil outlet pipeline of the lower cavity oil outlet 50. The pipeline at the oil outlet is provided with a pressure and flow measuring instrument and a control system, so that the working performance and technical parameters of the three oil impellers 27 with different specifications are respectively tested, and the structural size of the outer contour of the blade of the unknown oil impeller 27 is finally determined.
The leaked oil in the sealed cavity of the shell 13 flows out of the sealed cavity through the oil outlet 50 on the base 15 and is collected by a container, the leaked oil is measured by a measuring cup, and the leaked oil is compared with data of an oil mechanical seal assembly 29 product model machine during an independent research and development test to determine whether the leaked oil meets the requirement.
The nuclear main pump self-circulation oil pump and oil mechanical seal prototype test device provided by the invention can be used for simultaneously obtaining the results of two performance tests, is compact in structural design, innovative and advanced in concept, real and reliable in test data and lower in maintenance cost, provides accurate scientific basis for localization of nuclear main pump components, and also provides powerful and reliable data storage for further optimal design of the nuclear main pump in the future.
Claims (1)
1. A test device for the mechanical sealing performance of a self-circulation oil pump and an oil machine for a nuclear main pump is characterized in that: the motor (26) is fixed on the base (15), the second belt pulley (24) is connected with a shaft head (43) of the motor, the first belt pulley (21) is fixed on the main shaft sleeve (10), the belt covers (22) are arranged outside the first belt pulley (21) and the second belt pulley (24), the belt covers (22) are fixed on the upper cover (8), an end cover (45) is arranged above the first belt pulley (21), and the rotating speed instrument is inserted into a central hole (54) of the end cover (45); the shell (13) is fixed on the base (15), the end cover (45) is connected with the shell (13) to form a closed structure, the long sleeve (9) is arranged in the main shaft sleeve (10), the main shaft sleeve (10) is supported and fixed on the mandrel (47) by two pairs of first pair of tapered roller bearings (3) with different sizes and the same type, the first baffle ring (2) is arranged on the upper part of the first pair of tapered roller bearings (3), the second baffle ring (5) is arranged on the lower part of the first pair of tapered roller bearings (3), the two fine teeth Bao Luomao (46) on the first baffle ring (2) are pressed on the first pair of tapered roller bearings (3), the mandrel (47) and the long sleeve (9) are locked, the oil mechanical seal assembly (29) is positioned at the lower part of the oil impeller (27), the oil mechanical seal assembly (29) is supported and placed in the guide ring (11) by eight compression springs, the oil guide vane (28) is fixed on the guide ring (11), the guide ring (11) is connected with the inner flange of the shell (13), the lower end cover (16) is fixed at the lower end part of the main shaft sleeve (10), eight groups of adjusting screws (12) which are overlapped up and down are arranged on the connecting bolt distribution circle of the lower end cover (16) and the main shaft sleeve (10), the cavity of the test device is divided into a first cavity (52) and a second cavity (53), an oil inlet (51) and an oil outlet (50) are arranged on the shell wall, a rotary shaft lip seal ring (6) is adopted to seal between a rotary part spindle sleeve (10) and a fixed part upper cover (8), and an oil outlet is arranged on a base and connected with an oil outlet pipe (35) to serve as a channel for collecting and measuring oil leakage of an oil mechanical seal sample machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810824659.7A CN108760156B (en) | 2018-07-25 | 2018-07-25 | Nuclear self-circulation oil pump and oil mechanical sealing performance test device for main pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810824659.7A CN108760156B (en) | 2018-07-25 | 2018-07-25 | Nuclear self-circulation oil pump and oil mechanical sealing performance test device for main pump |
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| Publication Number | Publication Date |
|---|---|
| CN108760156A CN108760156A (en) | 2018-11-06 |
| CN108760156B true CN108760156B (en) | 2023-12-26 |
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| CN111980905A (en) * | 2020-08-27 | 2020-11-24 | 山东齐鲁电机制造有限公司 | Distributed lubricating oil system test device for steam turbine |
| CN114199473A (en) * | 2021-12-01 | 2022-03-18 | 上海峰轶机电工程技术启东有限公司 | Sealing test device and method for combined mechanical seal |
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| CN108760156A (en) | 2018-11-06 |
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