CN203502180U - Measuring device of dynamic-seal leakage amount - Google Patents
Measuring device of dynamic-seal leakage amount Download PDFInfo
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- CN203502180U CN203502180U CN201320609635.2U CN201320609635U CN203502180U CN 203502180 U CN203502180 U CN 203502180U CN 201320609635 U CN201320609635 U CN 201320609635U CN 203502180 U CN203502180 U CN 203502180U
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- seal
- rotor
- gas
- air chamber
- measurement mechanism
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Abstract
The utility model provides a measuring device of a dynamic-seal leakage amount. The measuring device comprises a rotor, a shell, a plurality of sealing members, high-pressure chambers and a gas measuring meter. The shell accommodates gases; the rotor divides the shell into a first gas chamber and a second gas chamber; the sealing members are fixed between the rotor and an inner peripheral wall of the shell, and arranged at intervals; each two adjacent sealing members, an outer peripheral wall of the rotor and the inner peripheral wall of the shell form one high-pressure chamber; and the gas measuring meter is disposed at a gas outlet of the first gas chamber or the second gas chamber, and used to measure the gas outlet amount of the first gas chamber or the second gas chamber. According to the measuring device of the dynamic-seal leakage amount, the gas measuring meter can directly measure the leakage amount between the rotor and the sealing members under conditions of a specified differential pressure, specified temperature and a specified rotating speed in real time, so errors in the process of measuring can be reduced, and the measuring precision is improved.
Description
Technical field
The utility model relates to engine art, especially, relates to a kind of measurement mechanism of motive seal leakage rate.
Background technology
Aeromotor motive seal has sealing rotating speed high (the highest per minute can reach several ten thousand and turn), work under bad environment (environment temperature is up to 700 ℃), pressure reduction is large, leakage rate is little feature.For correct assessment aeromotor motive seal leakage characteristics under different operating state, need the dynamic leakage amount of Measurement accuracy aeromotor motive seal under actual condition different rotating speeds.While measuring dynamic leakage amount, need to simulate the conditions such as sealing rotating speed, working temperature, two ends pressure reduction of aeromotor motive seal.
As shown in Figure 1, measure at present motive seal leakage rate and mainly adopt the indirect method of measurement.Existing measurement mechanism comprises the housing that holds gas and the rotor 20` that this housing is divided into the first air chamber 11` and the second air chamber 12`, seal 30` is installed between rotor 20` and housing, and seal 30` is fixed on housing.Wherein, housing comprises the gas outlet 111` being arranged on the first air chamber 11` and the air intake opening 121` that is arranged on the second air chamber 12`.While measuring motive seal leakage rate, due to rotor 20` rotation, the bearing seal between the first annular seal space 11` and rotor 20` cannot avoid existing Leakage Gas, the leakage rate that cannot directly directly collect seal 30` at the gas outlet 111` of the first annular seal space 11`.Therefore, adopt the indirect method of measurement to measure the leakage rate of seal 30`.Concrete grammar is first to allow High Temperature High Pressure air enter the second air chamber 12` from air intake opening 121`, adjusts the charge flow rate and the temperature that enter the second air chamber 12`, makes it to reach testing requirements.Gaseous tension in the second air chamber 12` and temperature remain unchanged under condition, measure the air inflow of the air intake opening 121` of the second air chamber 12`, within the some time, measured air inlet total amount just equals the leakage total amount between this section of time inner seal liner 30` and rotor 20`, leaks total amount and equals unit interval leakage rate divided by the time.
While adopting said apparatus to measure, because aeromotor motive seal leakage rate is little, charge flow rate measuring error can affect leakage rate precision greatly.Gas in the second air chamber 12` is high-temperature high-pressure state simultaneously, is difficult to remain unchanged completely in measuring process, and it changes can directly affect measuring accuracy.Therefore, there is the shortcoming that precision is low in the measurement that adopts said apparatus to carry out motive seal dynamic leakage amount, can not meet the requirement of aeromotor motive seal precise evaluation leakage characteristics completely.
Utility model content
The utility model object is to provide a kind of measurement mechanism of motive seal leakage rate, and while measuring motive seal leakage rate to solve prior art indirect, measuring accuracy is low, can not meet the technical matters of the requirement of engine motive seal leakage characteristics completely.
For achieving the above object, according to an aspect of the present utility model, provide a kind of measurement mechanism of motive seal leakage rate, having comprised: rotor; The housing that holds gas, rotor is partitioned into the first air chamber and the second air chamber by housing; Be fixed on a plurality of spaced seal between rotor and the internal perisporium of housing, between adjacent two seals, the periphery wall of rotor and the internal perisporium of housing, form high pressure chest; Gas filled counter, is arranged on the gas outlet of the first air chamber or the second air chamber, for measuring the air output of the first air chamber or the second air chamber.
Further, housing comprises enclosure body and be fixed on the seal carrier in enclosure body, and seal is arranged in seal carrier.
Further, enclosure body is provided with air intake opening, and seal carrier is provided with the gas passage that is communicated with air intake opening and high pressure chest.
Further, seal carrier is loop configuration, and the internal perisporium of seal carrier is provided with a plurality of grooves, and each seal is fixed in groove correspondingly.
Further, rotor comprises transmission shaft and the sealed object part linking with transmission shaft.
Further, seal is arranged between the internal perisporium of seal carrier and the periphery wall of sealed object part.
Further, mass flowmeter is counted in gasmetry.
The utlity model has following beneficial effect:
According to the measurement mechanism of motive seal leakage rate of the present utility model, by pass into high temperature and high pressure gas in high pressure chest, in the process of rotor high-speed rotation, in high pressure chest, there is a small amount of gas can between rotor and seal, leak into the first air chamber and the second air chamber, the measured gas flow of gas filled counter is the quantity of gas leakage between rotor and seal, gas filled counter can directly record the leakage rate between regulation pressure reduction, temperature and speed conditions lower rotor part and seal in real time, can reduce the error in measuring process like this, improve measuring accuracy.
Except object described above, feature and advantage, the utility model also has other object, feature and advantage.Below with reference to accompanying drawings, the utility model is described in further detail.
Accompanying drawing explanation
The accompanying drawing that forms the application's a part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of the measurement mechanism of prior art;
Fig. 2 is the schematic diagram of the measurement mechanism of the utility model preferred embodiment;
Fig. 3 is the structural representation of the measurement mechanism of the utility model preferred embodiment.
11`, the first air chamber; 111`, gas outlet; 12`, the second air chamber; 121`, air intake opening; 20`, rotor; 30`, seal; 10, rotor; 11, transmission shaft; 12, sealed object part; 20, housing; 21, enclosure body; 22, seal carrier; 20a, the first air chamber; 20b, the second air chamber; 201a, the first gas outlet; 201b, the second gas outlet; 30, seal; 31, the first seal; 32, the second seal; 40, high pressure chest; 50, gas filled counter; 60, bearing seal.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
Referring to Fig. 2 and Fig. 3, preferred embodiment of the present utility model provides a kind of measurement mechanism of motive seal leakage rate, comprises rotor 10; The housing 20 that holds gas, rotor 10 is partitioned into the first air chamber 20a and the second air chamber 20b by housing 20; Be fixed on a plurality of spaced seal 30 between rotor 10 and the internal perisporium of housing 20, between adjacent two seals 30, the periphery wall of rotor 10 and the internal perisporium of housing 20, form high pressure chest 40; Be arranged on the gas outlet of the first air chamber 20a or the second air chamber 20b, for measuring the gas filled counter 50 of the air output of the first air chamber 20a or the second air chamber 20b.According to the measurement mechanism of motive seal leakage rate of the present utility model, by pass into gases at high pressure in high pressure chest 40, in the process of rotor 10 High Rotation Speeds, in high pressure chest 40, there is a small amount of gas can between rotor 10 and seal 30, leak into the first air chamber 20a and the second air chamber 20b, the measured gas flow of gas filled counter 50 is the leakage rate between rotor 10 and seal 30, gas filled counter 50 can directly record in real time at regulation pressure reduction, leakage rate between temperature and speed conditions lower rotor part 10 and seal 30, can reduce the error in measuring process like this, improve measuring accuracy.
Particularly, incorporated by reference to referring to Fig. 2 and Fig. 3, rotor 10 comprise transmission shaft 11 and with the sealed object part 12 of transmission shaft 11 interlocks.Sealed object part 12 is ring bodies, the inner ring of sealed object part 12 is connected by bolt axial compression with transmission shaft 11, the periphery wall of sealed object part 12 is through spraying or other surface treatment, so that the outside surface of sealed object part 12 is smooth as much as possible, while coordinating with seal, can improve sealing effectiveness.
Sealed object part 12 rotates along with the rotation of transmission shaft 11, and seal 30 is fixed in seal carrier 22, thereby makes to have formed motive seal between sealed object part 12 and seal 30.In the process of rotating at sealed object part 12, in high pressure chest 40, have a small amount of gas and between sealed object part 12 and seal 30, leak into the first air chamber 20a and the second air chamber 20b.
In order to measure from the leakage rate between sealed object part 12 and seal 30, the gas filled counter 50 of measurement gas flow is set in the gas outlet of the first air chamber 20a or the second air chamber 20b, the measured gas flow of gas filled counter 50 is the quantity of gas leakage between sealed object part 12 and seal 30, can directly measure the quantity of gas leakage between sealed object part 12 and seal 30.In the present embodiment, owing to being to seal by bearing seal 60 between transmission shaft 11 and the first air chamber 20a, also for motive seal, inevitably there is Leakage Gas in its sealing, in order to improve the accuracy of measurement, gas filled counter 50 is arranged on to the second gas outlet 201b.Preferably, gas filled counter 50 is mass flowmeter, the gas of driven seal leakage carries out precision measurement with mass flowmeter after the second air chamber 20b is cooling, and the measured gas flow of mass flowmeter is from the quantity of gas leakage between sealed object part 12 and the second seal 32.Quantity of gas leakage between sealed object part 12 and the first seal 31 is directly discharged from the first gas outlet 201a.
As can be seen from the above description, the utility model the above embodiments have realized following technique effect:
According to the measurement mechanism of motive seal leakage rate of the present utility model, by pass into gases at high pressure in high pressure chest 40, in the process of rotor 10 High Rotation Speeds, in high pressure chest 40, there is a small amount of gas can between rotor 10 and seal 30, leak into the first air chamber 20a and the second air chamber 20b, the measured gas flow of gas filled counter 50 is the quantity of gas leakage between rotor 10 and seal 30, gas filled counter 50 can directly record in real time at regulation pressure reduction, leakage rate between temperature and speed conditions lower rotor part 10 and seal 30, can reduce the error in measuring process like this, improve measuring accuracy.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (7)
1. a measurement mechanism for motive seal leakage rate, is characterized in that, comprising:
Rotor (10);
The housing (20) that holds gas, described rotor (10) is partitioned into the first air chamber (20a) and the second air chamber (20b) by described housing (20);
Be fixed on a plurality of spaced seal (30) between described rotor (10) and the internal perisporium of described housing (20), between the periphery wall of adjacent two described seals (30), described rotor (10) and the internal perisporium of described housing (20), form high pressure chest (40);
Gas filled counter (50), is arranged on the gas outlet of described the first air chamber (20a) or described the second air chamber (20b), for measuring the air output of described the first air chamber (20a) or described the second air chamber (20b).
2. measurement mechanism according to claim 1, is characterized in that,
Described housing (20) comprises enclosure body (21) and is fixed on the seal carrier (22) in described enclosure body (21), and described seal (30) is arranged in described seal carrier (22).
3. measurement mechanism according to claim 2, is characterized in that,
Described enclosure body (21) is provided with air intake opening, and described seal carrier (22) is provided with the gas passage that is communicated with described air intake opening and described high pressure chest (40).
4. measurement mechanism according to claim 3, is characterized in that,
Described seal carrier (22) is loop configuration, and the internal perisporium of described seal carrier (22) is provided with a plurality of grooves, and seal described in each (30) is fixed in described groove correspondingly.
5. measurement mechanism according to claim 4, is characterized in that,
Described rotor (10) comprises transmission shaft (11) and the sealed object part (12) linking with described transmission shaft (11).
6. measurement mechanism according to claim 5, is characterized in that,
Described seal (30) is arranged between the internal perisporium of described seal carrier (22) and the periphery wall of described sealed object part (12).
7. measurement mechanism according to claim 1, is characterized in that,
Described gas filled counter (50) is mass flowmeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320609635.2U CN203502180U (en) | 2013-09-29 | 2013-09-29 | Measuring device of dynamic-seal leakage amount |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320609635.2U CN203502180U (en) | 2013-09-29 | 2013-09-29 | Measuring device of dynamic-seal leakage amount |
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| Publication Number | Publication Date |
|---|---|
| CN203502180U true CN203502180U (en) | 2014-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320609635.2U Expired - Lifetime CN203502180U (en) | 2013-09-29 | 2013-09-29 | Measuring device of dynamic-seal leakage amount |
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Cited By (4)
| 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 |
| CN105092189A (en) * | 2015-09-18 | 2015-11-25 | 中国航空工业集团公司沈阳发动机设计研究所 | Air flow passage sealing static test device |
| CN105527081A (en) * | 2015-12-24 | 2016-04-27 | 北京金风科创风电设备有限公司 | Dynamic seal testing device |
| CN111947933A (en) * | 2020-07-07 | 2020-11-17 | 南京航空航天大学 | Comprehensive test device and test method for leakage, heat transfer, friction and wear characteristics of aircraft engine dynamic seal |
-
2013
- 2013-09-29 CN CN201320609635.2U patent/CN203502180U/en not_active Expired - Lifetime
Cited By (6)
| 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 |
| CN105092189A (en) * | 2015-09-18 | 2015-11-25 | 中国航空工业集团公司沈阳发动机设计研究所 | Air flow passage sealing static test device |
| CN105527081A (en) * | 2015-12-24 | 2016-04-27 | 北京金风科创风电设备有限公司 | Dynamic seal testing device |
| CN105527081B (en) * | 2015-12-24 | 2020-05-01 | 北京金风科创风电设备有限公司 | Dynamic seal testing device |
| CN111947933A (en) * | 2020-07-07 | 2020-11-17 | 南京航空航天大学 | Comprehensive test device and test method for leakage, heat transfer, friction and wear characteristics of aircraft engine dynamic seal |
| CN111947933B (en) * | 2020-07-07 | 2022-04-22 | 南京航空航天大学 | Comprehensive test device and test method for leakage, heat transfer, friction and wear characteristics of aircraft engine dynamic seal |
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Granted publication date: 20140326 |
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