CN201521430U - Mechanical seal testing device for nuclear reactor coolant pump - Google Patents
Mechanical seal testing device for nuclear reactor coolant pump Download PDFInfo
- Publication number
- CN201521430U CN201521430U CN2009201874233U CN200920187423U CN201521430U CN 201521430 U CN201521430 U CN 201521430U CN 2009201874233 U CN2009201874233 U CN 2009201874233U CN 200920187423 U CN200920187423 U CN 200920187423U CN 201521430 U CN201521430 U CN 201521430U
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- China
- Prior art keywords
- mechanical seal
- seal
- main pump
- nuclear reactor
- coolant pump
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- Expired - Lifetime
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Abstract
A mechanical seal testing device for a nuclear reactor coolant pump is characterized in that the testing device utilizes a bottom-transmission vertical structure and is driven by a motor, a rotation speed and torque sensor is connected between a motor shaft and a spindle via flexible couplings, the spindle is supported by a lower support and an upper support which are mounted in an upper framework and extend upwards, the extension portion of the spindle which is sleeved with a testing shaft sleeve is used for mounting a stand seal and a mechanical seal used for a tested nuclear reactor coolant pump, the stand seal is arranged on the bottom of a lower sealed cavity, mechanical seal of the tested nuclear reactor coolant pump is arranged on the top of an upper cavity, the testing shaft sleeve is a replaceable component, a guide sleeve is arranged in the lower sealed cavity, a long tube throttle cooler and a back pressure valve, and an auxiliary bearing is assorted and arranged at the top end of the spindle. The mechanical seal testing device can not only simulate hydrostatic mechanical seal tests for the nuclear reactor coolant pump but also simulate hydrodynamic mechanical seal tests for the same and simultaneously simulate hydrostatic and hydrodynamic combined mechanical seal tests for the same.
Description
Technical field
The utility model relates to mechanical seal test device for nuclear main pump, more particularly, relates 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.
The model utility content
The utility model 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.
The utility model technical solution problem adopts following technological scheme:
The structural feature of the utility model mechanical seal test device for nuclear main pump 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 the utility model mechanical seal test device for nuclear main pump also is the top at main shaft, the supporting aiding support that is provided with.
Compared with the prior art, the utility model beneficial effect is embodied in:
1, the tested nuclear main pump of the utility model 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 utility model 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 utility model can be changed with axle sleeve, to satisfy the mechanical seal test requirements document of different size.
5, seal fluid outlet of the present utility model 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 the utility model main shaft top can make the critical speed of rotation of test axle system higher.
7, the utility model is arranged in test that tested nuclear main pump seals with mechanical seal and stand on axle sleeve simultaneously and can be eliminated axial force effectively.
8, the utility model 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 the utility model testing apparatus.
Number in the figure: A1 testing apparatus lower end, A2 testing apparatus upper end, 8 main shafts, 9 upper spiders.
Fig. 2 is the utility model testing apparatus 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 the utility model testing apparatus end portion structure diagram.
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 utility model is described in further detail 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 the utility model testing apparatus: 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 |
|---|---|---|---|
| CN2009201874233U CN201521430U (en) | 2009-09-08 | 2009-09-08 | Mechanical seal testing device for nuclear reactor coolant pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201874233U CN201521430U (en) | 2009-09-08 | 2009-09-08 | Mechanical seal testing device for nuclear reactor coolant pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201521430U true CN201521430U (en) | 2010-07-07 |
Family
ID=42507607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201874233U Expired - Lifetime CN201521430U (en) | 2009-09-08 | 2009-09-08 | Mechanical seal testing device for nuclear reactor coolant pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201521430U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101649833B (en) * | 2009-09-08 | 2011-07-27 | 合肥通用机械研究院 | Mechanical seal test device for nuclear main pump |
| CN105179223A (en) * | 2015-09-07 | 2015-12-23 | 中广核核电运营有限公司 | Mechanical seal assembly identification system of reactor 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 |
| US11493049B2 (en) * | 2018-09-19 | 2022-11-08 | Baker Hughes Holdings Llc | Torque-thrust chamber for horizontal pump test systems |
-
2009
- 2009-09-08 CN CN2009201874233U patent/CN201521430U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101649833B (en) * | 2009-09-08 | 2011-07-27 | 合肥通用机械研究院 | Mechanical seal test device for nuclear main pump |
| CN105179223A (en) * | 2015-09-07 | 2015-12-23 | 中广核核电运营有限公司 | Mechanical seal assembly identification system of reactor 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 |
| US11493049B2 (en) * | 2018-09-19 | 2022-11-08 | Baker Hughes Holdings Llc | Torque-thrust chamber for horizontal pump test systems |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100707 Effective date of abandoning: 20090908 |