CN101649833A - Mechanical seal test device for nuclear main pump - Google Patents
Mechanical seal test device for nuclear main pump Download PDFInfo
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- CN101649833A CN101649833A CN200910144872A CN200910144872A CN101649833A CN 101649833 A CN101649833 A CN 101649833A CN 200910144872 A CN200910144872 A CN 200910144872A CN 200910144872 A CN200910144872 A CN 200910144872A CN 101649833 A CN101649833 A CN 101649833A
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- mechanical seal
- main pump
- seal
- main shaft
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Abstract
The invention relates to a mechanical seal test device for a nuclear main pump, which is characterized by adopting a vertical structure of bottom transmission, which is driven by a motor; a speed-torque sensor is connected between a motor shaft and a main shaft through a flexible coupling; the main shaft is supported by a lower support and an upper support which are installed in an upper stand; the main shaft extends upward, and the extending part of the main shaft is sleeved with a testing shaft sleeve for installing a bench seal and a mechanical seal used in the tested nuclear main pump; thebench seal is arranged at the bottom of a lower seal cavity, and the mechanical seal for the tested nuclear main pump is arranged at the top of an upper cavity; the testing shaft sleeve is replaceable; a flow guiding sleeve is arranged in the lower seal cavity; a long tube throttling cooler and a back pressure valve are arranged at the position of the seal liquid outlet of the lower seal cavity;and an auxiliary support is matched at the top end of the main shaft. The mechanical seal test device can simulate hydrostatic mechanical seal tests for the nuclear main pump, can simulate hydrodynamic mechanical seal tests for the nuclear main pump and can simulate hydrostatic and hydrodynamic combined type mechanical seal tests for the nuclear main pump.
Description
Technical field
The present invention relates to mechanical seal test device for nuclear main pump, more particularly, relate to a kind of device that nuclear power plant reactor coolant pump shaft sealing operating conditions is carried out the mechanical sealing performance test of simulating.
Background technique
Mechanical seal is indispensable component in the fluid rotary machine, and its quality and performance directly influence and determining the service behaviour of main frame.Because mechanical seal mechanism relates to a plurality of subjects such as tribology, materials science, fluid mechanics, solid mechanics, thermal conduction study, lubrication theory, does not form complete design theory so far as yet, many data rely on test to obtain.Therefore, the experimental technique of mechanical seal is quite important.
The mechanical seal of nuclear main pump is to be used for controlling the leakage of reactor coolant along pump shaft, and it is the critical component of main pump, and is closely related with safety, the reliable operation of main pump.At present, the mechanical seal of international nuclear main pump has two big classes, and a class is the mechanical seal of hydrostatic pressure formula nuclear main pump; Another kind of is the mechanical seal of hydrodynamic formula nuclear main pump.
With regard to mechanical seal test device for nuclear main pump, the nuclear main pump uses the manufacturer of mechanical seal all according to the self seal products characteristics, set up special nuclear main pump mechanical seal test device, or be hydrostatic pressure formula nuclear main pump mechanical seal test device, or be hydrodynamic formula nuclear main pump mechanical seal test device.Yet there are no the relevant fluid static pressure type nuclear main pump of can simulating so far and test, can simulate fluid dynamic pressure type nuclear main pump again and test, can also simulate the device of the dynamic and static pressure combined nuclear main pump of fluid simultaneously with the mechanical seal test with mechanical seal with mechanical seal.
Summary of the invention
The present invention is for avoiding above-mentioned existing in prior technology deficiency, a kind of nuclear main pump mechanical seal test device is provided, making it can simulate fluid static pressure type nuclear main pump tests with mechanical seal, can simulate fluid dynamic pressure type nuclear main pump again and test, can also simulate the dynamic and static pressure combined nuclear main pump of fluid simultaneously and test with mechanical seal with mechanical seal.
Technical solution problem of the present invention adopts following technological scheme:
The structural feature of mechanical seal test device for nuclear main pump of the present invention is to adopt vertical structure of bottom transmission, by motor driving, connects torque and speed sensors by flexible coupling between motor shaft and the main shaft; Described main shaft is supported by the lower support and the upper support that are installed in the upper spider, main shaft protrudes upward, the extension suit test axle sleeve of main shaft, be used to install stand sealing and the mechanical seal of tested nuclear main pump, the stand sealing is arranged on the bottom of lower seal cavity, tested nuclear main pump is arranged on the top of upper cavity with mechanical seal, and test is replaceable member with axle sleeve; In the described lower seal cavity water conservancy diversion cover is set, long tube throttling cooler and back pressure valve is set at the seal fluid outlet place of lower seal cavity.
The structural feature of mechanical seal test device for nuclear main pump of the present invention also is the top at main shaft, the supporting aiding support that is provided with.
Compared with the prior art, beneficial effect of the present invention is embodied in:
1, the tested nuclear main pump of the present invention can be one pole or multistage with mechanical seal, and the structural type of sealing can or be the fabricated structure of hydrodynamic and hydrostatic pressure for hydrostatic pressure formula, hydrodynamic formula.
2, the present invention adopts vertical structure of bottom transmission, is convenient to the installation and removal of tested nuclear main pump with mechanical seal.
4, test of the present invention can be changed with axle sleeve, to satisfy the mechanical seal test requirements document of different size.
5, seal fluid outlet of the present invention is provided with long tube throttling cooler, can form stable pressure reduction by back pressure valve, can control water flow again, cools off simultaneously.
6, the supporting auxiliary bearing that is provided with in main shaft top of the present invention can make the critical speed of rotation of test axle system higher.
7, the present invention arranges in test that tested nuclear main pump seals with mechanical seal and stand on axle sleeve simultaneously and can eliminate axial force effectively.
8, the present invention is equally applicable to the performance test of the high parameter mechanical seal of similar operating mode.
Description of drawings
Fig. 1 is the structural representation of testing apparatus of the present invention.
Number in the figure: A1 testing apparatus lower end, A2 testing apparatus upper end, 8 main shafts, 9 upper spiders.
Fig. 2 is a testing apparatus of the present invention upper end part structure diagram.
Number in the figure: seal chamber, 17 leakage holes, 18 tests connect drain cap with axle sleeve, 19 aiding supports, 20 locking nuts, 21 keys, 22 tested nuclear main pumps with mechanical seal, 23 temperature sensor interfaces, 24 sealing fluid imports, 25 water conservancy diversion covers, 26 on 8 main shafts, 9 upper spiders, 10 upper supports, 11 back pressure valves, 12 long tube throttling coolers, 13 seal fluid outlets, the sealing of 14 stands, the 15 lower seal cavitys, 16.
Fig. 3 is a testing apparatus end portion structure diagram of the present invention.
Number in the figure: 1 motor, 2 supports, 3 positioning plates, 4 coupling, 5 torque and speed sensorses, 6 lower bearing brackets, 7 lower supports, 8 main shafts, 9 upper spiders.
Below pass through embodiment, and the invention will be further described in conjunction with the accompanying drawings.
Embodiment
Referring to Fig. 1, Fig. 2 and Fig. 3, present embodiment adopts vertical structure of bottom transmission, and useable electric moter 1 direct connection drives, and perhaps drives with the band kind of drive, realizes stepless time adjustment by frequency variator, connects torque and speed sensors 5 and main shaft 8 with flexible coupling 4.Main shaft 8 is by being installed in lower support 7 on the upper spider 9 and upper support 10 supports, and on main shaft 8 tops the supporting aiding support 19 that is provided with.The test that is provided with variable-diameter on the test end of main shaft 8 is tested and is used axle sleeve 18 to be connected transmission with main shaft 8 by key 21, and compress with locking nut 20 in the upper end of main shaft 8, and carry out axially locating with axle sleeve 18.
Test rack adopts the truncated cone shape structure of segmented, is made up of upper spider 9 and lower bearing bracket 6, and lower bearing bracket 6 fixed in position are on support 2, and upper spider 9 is two fulcrum frames, is used to lay lower support 7 and upper support 10.
Seal chamber is made up of last seal chamber 16 and lower seal cavity 15, is respectively arranged with sealing fluid import 24, seal fluid outlet 13, temperature sensor interface 23 on lower seal cavity 15; On last seal chamber 16, be respectively arranged with leakage hole 17 and water conservancy diversion cover 25; Be provided with in the bottom of seal chamber and connect drain cap 26, seal fluid outlet 13 is provided with long tube throttling cooler 12 and back pressure valve 11.
The sealing stand sealing 14 that manufactures with mechanical seal 22 with tested nuclear main pump is housed, to eliminate axial force in the lower seal cavity 15.
The tested nuclear main pump that seal chamber is installed can be one pole or multi-stage sealed with mechanical seal, and its structural type can be hydrostatic pressure formula, hydrodynamic formula, or is the combined type of hydrodynamic and hydrostatic pressure.
The major parameter of testing apparatus of the present invention: design pressure 19.5MPa; 0～80 ℃ of temperature; Rotating speed 0～1500r/min.
During test, high pressure water is injected in sealing fluid import 24 by lower seal cavity 15, part water leaks with mechanical seal 22 and stand sealing 14 via tested nuclear main pump, another part water is flowed out by seal fluid outlet 13, after 12 throttlings of long tube throttling cooler and back pressure valve 11 adjustings, form and stablize pressure reduction, and the control water flow, flow to water tank after the cooling.Leakage test system by configuration guarantees to carry out hydrostatic pressure formula or hydrodynamic formula, or the dynamic and static pressure combined nuclear main pump of the fluid simulation test of mechanical seal.
Claims (2)
1, mechanical seal test device for nuclear main pump is characterized in that adopting vertical structure of bottom transmission, is driven by motor (1), connects torque and speed sensors (5) by flexible coupling (4) between motor shaft and the main shaft (8); Described main shaft (8) is supported by the lower support (7) and the upper support (10) that are installed in the upper spider (9), main shaft (8) protrudes upward, the extension suit test axle sleeve (18) of main shaft (8), be used to install the mechanical seal (22) of stand sealing (14) and tested nuclear main pump, stand sealing (14) is arranged on the bottom of lower seal cavity (15), tested nuclear main pump is arranged on the top of upper cavity (16) with mechanical seal (22), and test is replaceable member with axle sleeve (18); Water conservancy diversion cover (25) is set in the described lower seal cavity (15), long tube throttling cooler (12) and back pressure valve (11) are set at the seal fluid outlet place of lower seal cavity (15).
2, mechanical seal test device for nuclear main pump according to claim 1 is characterized in that on the top of described main shaft (8), the supporting aiding support (19) that is provided with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101448724A CN101649833B (en) | 2009-09-08 | 2009-09-08 | Mechanical seal test device for nuclear main pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101448724A CN101649833B (en) | 2009-09-08 | 2009-09-08 | Mechanical seal test device for nuclear main pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101649833A true CN101649833A (en) | 2010-02-17 |
| CN101649833B CN101649833B (en) | 2011-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009101448724A Active CN101649833B (en) | 2009-09-08 | 2009-09-08 | Mechanical seal test device for nuclear main pump |
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| CN (1) | CN101649833B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865137A (en) * | 2010-06-17 | 2010-10-20 | 浙江大学 | Experimental device of 'wet' rotor effect of multi-stage centrifugal pump |
| CN102777392A (en) * | 2012-08-27 | 2012-11-14 | 哈尔滨电气动力装备有限公司 | Testing device for oil impeller for supplying oil to two-way thrust bearing of reactor coolant pump |
| CN102808760A (en) * | 2012-09-04 | 2012-12-05 | 哈尔滨电气动力装备有限公司 | Testing device for three-level fluid dynamic pressure mechanical seal |
| CN103513061A (en) * | 2013-09-30 | 2014-01-15 | 江阴众和电力仪表有限公司 | LOCA test rotating speed analogy method and device |
| RU2604778C1 (en) * | 2015-10-06 | 2016-12-10 | Акционерное общество "Опытное Конструкторское Бюро Машиностроения имени И.И. Африкантова" (АО "ОКБМ Африкантов") | Test bench for end seals of shafts of circulating pumps |
| CN107575394A (en) * | 2017-09-19 | 2018-01-12 | 哈尔滨电气动力装备有限公司 | Small nuclear power plant core main pump |
| CN108760156A (en) * | 2018-07-25 | 2018-11-06 | 哈尔滨电气动力装备有限公司 | The experimental rig of core main pump self-loopa oil pump and oily mechanical sealing performance |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102345591B (en) * | 2011-09-23 | 2014-04-16 | 清华大学 | Pressure-maintaining maintenance seal experiment table |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201521430U (en) * | 2009-09-08 | 2010-07-07 | 合肥通用机械研究院 | Mechanical seal testing device for nuclear reactor coolant pump |
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2009
- 2009-09-08 CN CN2009101448724A patent/CN101649833B/en active Active
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865137A (en) * | 2010-06-17 | 2010-10-20 | 浙江大学 | Experimental device of 'wet' rotor effect of multi-stage centrifugal pump |
| CN102777392A (en) * | 2012-08-27 | 2012-11-14 | 哈尔滨电气动力装备有限公司 | Testing device for oil impeller for supplying oil to two-way thrust bearing of reactor coolant pump |
| CN102777392B (en) * | 2012-08-27 | 2015-03-11 | 哈尔滨电气动力装备有限公司 | Testing device for oil impeller for supplying oil to two-way thrust bearing of reactor coolant pump |
| CN102808760A (en) * | 2012-09-04 | 2012-12-05 | 哈尔滨电气动力装备有限公司 | Testing device for three-level fluid dynamic pressure mechanical seal |
| CN102808760B (en) * | 2012-09-04 | 2015-03-25 | 哈尔滨电气动力装备有限公司 | Testing device for three-level fluid dynamic pressure mechanical seal |
| CN103513061A (en) * | 2013-09-30 | 2014-01-15 | 江阴众和电力仪表有限公司 | LOCA test rotating speed analogy method and device |
| CN103513061B (en) * | 2013-09-30 | 2015-05-13 | 中国核电工程有限公司 | LOCA test rotating speed analogy method and device |
| RU2604778C1 (en) * | 2015-10-06 | 2016-12-10 | Акционерное общество "Опытное Конструкторское Бюро Машиностроения имени И.И. Африкантова" (АО "ОКБМ Африкантов") | Test bench for end seals of shafts of circulating pumps |
| CN107575394A (en) * | 2017-09-19 | 2018-01-12 | 哈尔滨电气动力装备有限公司 | Small nuclear power plant core main pump |
| CN108760156A (en) * | 2018-07-25 | 2018-11-06 | 哈尔滨电气动力装备有限公司 | The experimental rig of core main pump self-loopa oil pump and oily mechanical sealing performance |
| CN108760156B (en) * | 2018-07-25 | 2023-12-26 | 哈尔滨电气动力装备有限公司 | Nuclear self-circulation oil pump and oil mechanical sealing performance test device for main pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101649833B (en) | 2011-07-27 |
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Address after: 230031 No. 888, Changjiang West Road, Shushan District, Hefei City, Anhui Province Patentee after: Hefei General Machinery Research Institute Co., Ltd Address before: 230031 No. 888, Changjiang West Road, Shushan District, Hefei City, Anhui Province Patentee before: Hefei General Machinery Research Institute |