CN104458141A - Dynamic and static seal test device - Google Patents

Dynamic and static seal test device Download PDF

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Publication number
CN104458141A
CN104458141A CN201410746472.1A CN201410746472A CN104458141A CN 104458141 A CN104458141 A CN 104458141A CN 201410746472 A CN201410746472 A CN 201410746472A CN 104458141 A CN104458141 A CN 104458141A
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CN
China
Prior art keywords
shaft
tested
seal
motor
dynamic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201410746472.1A
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Chinese (zh)
Inventor
卢尚斌
曾湘黔
张越雷
王湘华
薛滟膑
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xiangtan Electric Manufacturing Co Ltd
Original Assignee
Xiangtan Electric Manufacturing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xiangtan Electric Manufacturing Co Ltd filed Critical Xiangtan Electric Manufacturing Co Ltd
Priority to CN201410746472.1A priority Critical patent/CN104458141A/en
Publication of CN104458141A publication Critical patent/CN104458141A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a dynamic and static seal test device. The dynamic and static seal test device comprises a motor, a coupling, a false shaft, a sealing end cover to be tested, a sealing cavity body, a base, a temperature sensor, an atmospheric pressure gauge, a pressure sensor and a data recorder, wherein the size of the false shaft is the same as that of the neck sealing position of a motor shaft to be tested; the motor shaft drives the false shaft to rotate; the temperature sensor and the pressure sensor are arranged in the sealing cavity body and transmit the temperature value and the pressure value which are detected in real time to the data recorder; the atmospheric pressure gauge monitors the actual atmosphere pressure in real time and transmits the pressure value to the data recorder; the sealing cavity body is filled with dry gas. As the false shaft replaces the motor shaft to be tested, the operating cost is lowered greatly, and it is prevented that the motor shaft to be tested is damaged by accidental injury. The dynamic and static seal test device can accurately measure dynamic and static leakage amounts of the shaft neck split type rotary sealing end cover, and therefore the optimal fit dimension between the motor shaft to be tested and the end cover is obtained.

Description

A kind of dynamic and static seal test device
Technical field
The sealing property that the present invention relates to axle journal dissection type rotary seal end cap detects, this test unit is according to the design feature of axle journal dissection type rotary seal end cap and sealing property requirement, dynamic and static leakage test can be carried out to axle journal dissection type rotary seal end cap, and the leakage rate of tested gas can be drawn by the computing method of formula (1).
Background technology
Axle journal dissection type rotary seal end cap is applied to certain type motor, it is magnetic fat sealing between its axle journal and dissection type end cap, its seal request is high, because motor shaft weight is large, complex structure difficulty of processing is large, therefore be often that benchmark is to mate end cap with motor shaft, thus guarantee the sealing property between motor axle journal and end cap, detection when therefore needing a kind of experimental provision to carry out dynamic and static state to the seal leakage amount between motor axle journal and end cap, thus determine the best fit size between motor axle journal and end cap.
Summary of the invention
The object of the invention is to overcome above defect, a kind of dynamic and static seal test device detected the seal leakage amount between motor axle journal and end cap is provided.
Technical scheme of the present invention is, a kind of dynamic, static seal test unit, it comprises motor, shaft coupling, dummy shaft, end cover to be tested, seal chamber, base, temperature sensor, atmospheric pressure meter, pressure transducer, datalogger, described dummy shaft and motor journal packing place to be tested measure-alike, linked together by shaft coupling between one end of dummy shaft and motor, the other end of dummy shaft is provided with seal chamber, end cover to be tested is arranged on the side of seal chamber, be provided with magnetic fat between end cover to be tested and dummy shaft to seal, the opposite side of seal chamber is provided with seal cover board, motor, seal chamber is fixed on base, motor shaft drives dummy shaft to rotate, temperature sensor and pressure transducer is provided with in the inside of seal chamber, and the temperature value detected in real time and force value are delivered to datalogger, force value is also delivered to datalogger by the actual pressure of atmospheric pressure meter Real-Time Monitoring air, and described annular seal space is filled with dry gas.
Described dry gas is drying nitrogen.
Heat insulation between described temperature sensor and seal chamber.
Advantageous Effects of the present invention is: replace motor shaft to be tested owing to adopting dummy shaft, not only greatly reduce operating cost, and can prevent accidental injury from causing motor shaft to be tested to damage, utilize this device can measure the dynamic and static leakage rate of axle journal dissection type rotary seal end cap more exactly, thus the fit dimension between best motor shaft to be tested and end cap can be obtained.
Accompanying drawing explanation
Fig. 1 is inventive embodiments structural representation.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention will be further described.
A kind of dynamic, static seal test unit, it comprises motor 1, shaft coupling 2, bearing and bearing seat 3, dummy shaft 4, end cover 5 to be tested, seal chamber 6, temperature sensor 7, pressure transducer 8, seal cover board 9, base 10, atmospheric pressure meter 11, datalogger 12, described dummy shaft 4 is measure-alike with motor journal packing place to be tested, linked together by shaft coupling between one end of dummy shaft 4 and motor 1, the other end of dummy shaft 4 is provided with seal chamber 6, end cover 5 to be tested is arranged on the side of seal chamber 6, be provided with magnetic fat between end cover 5 to be tested and dummy shaft 4 to seal, the opposite side of seal chamber 6 is provided with seal cover board 9, motor 1, seal chamber 6 is fixed on base, the axle of motor 1 drives dummy shaft 4 to rotate, be provided with temperature sensor 7 and pressure transducer 8 in the inside of seal chamber 6, and the temperature value detected in real time and force value are delivered to datalogger 12, force value is also delivered to datalogger 12 by the actual pressure of atmospheric pressure meter 11 Real-Time Monitoring air.
During static seal test, in seal chamber 6, be filled with the drying nitrogen of certain pressure, through the pressurize of certain test period, by atmospheric pressure, cavity temperature, the cavity pressure of record, according to the computing method of formula (1), calculate leakage rate; During motive seal test, every data when record test is initial, start motor belt motor moving axis and rotate, and through the running of certain test period, utilize the parameters of record, according to the computing method of formula (1), calculate leakage rate.
Computing method are:
L FlaN = L a p 0 p N × M rLla M ra = V ( p air 0 + p 0 273.15 + θ 0 - p air 1 + p 1 273.15 + θ 1 ) × θ a p a × 24 Δt × ( p N p 0 × M ra M rLla ) - - - ( 1 )
Wherein:
L flaN---------the object gas volume that the------unit interval (24h) reveals
V-----------------seal chamber charging volume (0.5m 3), unit is m 3;
P n---------------be cavity pressure (0.01MPa) when-seal chamber normally works;
P air0, p air1atmospheric pressure that-------test is forward and backward (MPa, effective value be after radix point 4);
P 0, p 1-----------test pressure in forward and backward seal chamber (MPa, effective value be after radix point 4);
θ 0, θ 1---------tests medial temperature (DEG C) in forward and backward annular seal space body cavity;
P a, θ a----------standard atmospheric pressure (MPa) and 20 degrees Celsius of corresponding absolute temperature (DEG C)
⊿ t---------------test period (h);
M ra, M rflathe molal weight of-------nitrogen and object gas.

Claims (3)

1. one kind is moved, static seal test unit, it is characterized in that, it comprises motor, shaft coupling, dummy shaft, end cover to be tested, seal chamber, base, temperature sensor, atmospheric pressure meter, pressure transducer, datalogger, described dummy shaft and motor journal packing place to be tested measure-alike, linked together by shaft coupling between one end of dummy shaft and motor, the other end of dummy shaft is provided with seal chamber, end cover to be tested is arranged on the side of seal chamber, be provided with magnetic fat between end cover to be tested and dummy shaft to seal, the opposite side of seal chamber is provided with seal cover board, motor, seal chamber is fixed on base, motor shaft drives dummy shaft to rotate, temperature sensor and pressure transducer is provided with in the inside of seal chamber, and the temperature value detected in real time and force value are delivered to datalogger, force value is also delivered to datalogger by the actual pressure of atmospheric pressure meter Real-Time Monitoring air, and described annular seal space is filled with dry gas.
2. the dynamic and static seal test device of one according to claim 1, is characterized in that, described dry gas is drying nitrogen.
3. according to the dynamic and static seal test device of one according to claim 1 or claim 2, it is characterized in that, is heat insulation between described temperature sensor and seal chamber.
CN201410746472.1A 2014-12-09 2014-12-09 Dynamic and static seal test device Pending CN104458141A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410746472.1A CN104458141A (en) 2014-12-09 2014-12-09 Dynamic and static seal test device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410746472.1A CN104458141A (en) 2014-12-09 2014-12-09 Dynamic and static seal test device

Publications (1)

Publication Number Publication Date
CN104458141A true CN104458141A (en) 2015-03-25

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410746472.1A Pending CN104458141A (en) 2014-12-09 2014-12-09 Dynamic and static seal test device

Country Status (1)

Country Link
CN (1) CN104458141A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104729799A (en) * 2015-04-02 2015-06-24 国电联合动力技术有限公司 Test platform and method for new energy power generation device sealing structure tests
CN104819811A (en) * 2015-05-20 2015-08-05 安徽皖南电机股份有限公司 Motor end cover casting quality detection tool
CN105277323A (en) * 2015-11-13 2016-01-27 沈阳航天新光集团有限公司 Sealing test stand
CN111336113A (en) * 2020-04-13 2020-06-26 重庆水泵厂有限责任公司 High-speed sealed internal fluid static and dynamic characteristic measuring system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001074588A (en) * 1999-09-02 2001-03-23 Railway Technical Res Inst Leak inspecting device for pneumatic tire
US20060254342A1 (en) * 2005-05-12 2006-11-16 Denso Corporation Leak diagnosis system and leak diagnosis method
CN102519684A (en) * 2011-11-30 2012-06-27 东方电气集团东方汽轮机有限公司 Dynamic sealing test device and sealing clearance adjustment method
CN202420791U (en) * 2012-01-11 2012-09-05 何鹏飞 Mechanical static seal detecting system
CN203083792U (en) * 2013-02-27 2013-07-24 湘潭电机股份有限公司 Detector for leakage rate of part
CN203350003U (en) * 2013-07-18 2013-12-18 江苏海纳磁性纳米新材料科技有限公司 Vacuum dynamic seal-testing system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001074588A (en) * 1999-09-02 2001-03-23 Railway Technical Res Inst Leak inspecting device for pneumatic tire
US20060254342A1 (en) * 2005-05-12 2006-11-16 Denso Corporation Leak diagnosis system and leak diagnosis method
CN102519684A (en) * 2011-11-30 2012-06-27 东方电气集团东方汽轮机有限公司 Dynamic sealing test device and sealing clearance adjustment method
CN202420791U (en) * 2012-01-11 2012-09-05 何鹏飞 Mechanical static seal detecting system
CN203083792U (en) * 2013-02-27 2013-07-24 湘潭电机股份有限公司 Detector for leakage rate of part
CN203350003U (en) * 2013-07-18 2013-12-18 江苏海纳磁性纳米新材料科技有限公司 Vacuum dynamic seal-testing system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
吴露等: "特种磁脂密封的寿命试验研究", 《润滑与密封》 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104729799A (en) * 2015-04-02 2015-06-24 国电联合动力技术有限公司 Test platform and method for new energy power generation device sealing structure tests
CN104819811A (en) * 2015-05-20 2015-08-05 安徽皖南电机股份有限公司 Motor end cover casting quality detection tool
CN105277323A (en) * 2015-11-13 2016-01-27 沈阳航天新光集团有限公司 Sealing test stand
CN111336113A (en) * 2020-04-13 2020-06-26 重庆水泵厂有限责任公司 High-speed sealed internal fluid static and dynamic characteristic measuring system

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Application publication date: 20150325

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