CN204594646U - Low temperature pressurising pipeline vibration test displacement loading system - Google Patents
Low temperature pressurising pipeline vibration test displacement loading system Download PDFInfo
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- CN204594646U CN204594646U CN201520225445.XU CN201520225445U CN204594646U CN 204594646 U CN204594646 U CN 204594646U CN 201520225445 U CN201520225445 U CN 201520225445U CN 204594646 U CN204594646 U CN 204594646U
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Abstract
The utility model belongs to cryogenic pipe vibration test technical field, comprises pipeline stiff end frock, test pipeline, bellows piece, displacement load fixing tool, displacement loading screw rod, pipe system displacement load applying end frock; Be telescopic bellows piece in the middle part of test pipeline, displacement load fixing tool is fixed on vibration table surface, test pipeline is connected with the pipeline stiff end frock and pipe system displacement load applying end frock testing pipeline two ends by displacement load fixing tool central diameter circular hole, and displacement load fixing tool loads screw rod with pipe system displacement load applying end frock by four displacements and is connected; Pipeline stiff end frock is fixed on vibration table surface.The utility model by loading clockwise fastening or counterclockwise the unscrewing of screw rod top nut, by compression or the displacement stretched and angle load evenly and accurately put on test pipeline.
Description
Technical field
The utility model belongs to low temperature shock experimental technique field, is specifically related to a kind of low temperature pressurising pipeline vibration test displacement loading system.
Background technology
Along with the development of Chinese space industry, and the foundation of space station, high thrust, Future Launch Rocket demand are more and more urgent.The existing "Long March" series of carrier rockets of current China develop to adopt on the basis of strategic arms, and toxicity is large, seriously polluted, price is high, poor performance for its propellant (uns-dimethylhydrazine/dinitrogen tetroxide), obviously not enough.The spacefaring nations such as the U.S., France, USSR (Union of Soviet Socialist Republics) start toxicity and the pollution problem of paying attention to propellant very early, and restriction even prohibits the use uns-dimethylhydrazine.The high-thrust rocket of New-type fuel is adopted to be the trend that current rocket develops.China also starts to carry out study and use to the New-type fuel of rocket, and according to reports, liquid oxygen/Kerosene propellant engine will use in No. 7, the Long March, and liquid oxygen/liquid hydrogen propellant engine will use in No. 5, the Long March.
In the development process of New-type fuel rocket, the success or failure of the pipeline relation rocket launching of fuel, oxygenant etc., in order to ensure the success of rocket launching, the environmental test of pipeline is essential.The environmental test of pipeline, need the true environment of simulation pipeline as far as possible, namely pipeline passes into the cryogenic media similar with true medium, keeps pressure during duty simultaneously.Because liquid hydrogen, liquid oxygen temperature are very low, be respectively 20K (-253 DEG C), 80K (-193 DEG C) left and right, in addition rocket body structure also exists overall distortion, pipe system is at practical set time error, and these factors all result in pipe system and there is initial displacement in actual use.This low temperature pressurising to pipeline vibration proposes new requirement.Before owing to not carrying out cryogenic pipe pressurising vibration test, the low temperature pressurising vibration of pipeline belongs to blank substantially, the cryogenic pipe vibration test initial displacement in early stage all adopts the method for artificial push-and-pull pipeline one end frock to apply, and the applying of displacement is accurate not, and error is larger.
Summary of the invention
The purpose of this utility model is to provide a kind of low temperature pressurising pipeline vibration to test displacement loading system, to overcome prior art above shortcomings.
For achieving the above object, technical solution adopted in the utility model is:
A kind of low temperature pressurising pipeline vibration test displacement loading system, comprises pipeline stiff end frock, test pipeline, bellows piece, displacement load fixing tool, displacement loading screw rod, pipe system displacement load applying end frock; Be telescopic bellows piece in the middle part of test pipeline, displacement load fixing tool is fixed on vibration table surface, test pipeline is connected with the pipeline stiff end frock and pipe system displacement load applying end frock testing pipeline two ends by displacement load fixing tool central diameter circular hole, and displacement load fixing tool loads screw rod with pipe system displacement load applying end frock by four displacements and is connected; Pipeline stiff end frock is fixed on vibration table surface.
It is stainless steel material 0Cr18Ni9 that described displacement loads screw rod, and diameter is Φ 26.
U-type groove mouth is had bottom described pipe system displacement load applying end frock, make pipe system displacement load applying end frock can move freely along test pipeline displacement load loading direction at vibration table surface, after displacement load applying is determined, pipe system displacement load applying end frock is fixed on vibration table surface.
Described displacement load fixing tool and pipe system displacement load applying end frock load screw rod to testing the compression of telescopic bellows piece in the middle part of pipeline or the applying realized the displacement load testing pipe system that stretches by displacement; Displacement loads screw rod can carry out the displacement applying of axial compression or stretching and the applying of angle displacement to test pipeline.
Beneficial effect acquired by the utility model is:
The utility model can ensure to apply corresponding initial displacement to pipe ends in the test of low temperature pressurising pipe system, guarantees the accuracy to the applying of pipeline initial displacement in process of the test, simulates the practical service environment of pipeline more really.
Accompanying drawing explanation
Fig. 1 is low temperature pressurising pipeline vibration described in the utility model test displacement loading system structural representation;
In figure: 1, pipeline stiff end frock; 2, pipeline is tested; 3, bellows piece; 4, displacement load fixing tool; 5, displacement loads screw rod; 6, pipe system displacement load applying end frock; 7, U-type groove mouth.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
Need for existing low temperature pressurising pipeline vibration test the actual conditions applying initial displacement load, the utility model provides a set of low temperature pressurising pipeline vibration test displacement loading system.This system is by three aspect measures, guarantee that pipeline is passing into cryogenic media and under pressurising state, applying vibration initial displacement load accurately, overcome the larger pressure that pressurising lower pipeline end cross-sectional exists, realize the applying to the compression of low temperature pressurising pipe system, stretching displacement and angle displacement load, reduce difficulty that in process of the test, displacement applies and the error that uncontrollable factor produces.Lower mask body introduces three aspects of utility model, as shown in Figure 1:
The first, in pipe system test, displacement load fixing tool 4 is fixed on vibration table surface, ensures in design that displacement load fixing tool 4 has larger rigidity and intensity, meet the designing requirement of vibration test for test tool.Adopt four displacements to load screw rod 5 displacement load fixing tool 4 is connected with pipe system displacement load applying end frock 6, nut stem material chooses stainless steel material 0Cr18Ni9, intended diameter is Φ 26, displacement load can be transmitted preferably, bear pressurising lower pipeline sectional pressure, and the inefficacy of pipeline displacement load can not be caused because of the deformation damage of screw rod in vibration test process.
The second, displacement load fixing tool 4 is connected with pipe system displacement load applying end frock 6 by four screw rods 5.After connecting, displacement load fixing tool 4 is first fixed on vibration table surface, U-type groove mouth 7 is had bottom pipe system displacement load applying end frock 6, the moving freely along pipeline displacement load loading direction of pipe system displacement load applying end frock 6 at vibration table surface can be met, after displacement load applying is determined, pipe system displacement load applying end frock 6 is secured entirely on vibration table surface.
3rd, the design of displacement load fixing tool 4 and displacement loading screw rod 5 should meet axial rigidity and the requirement of strength of the loading of displacement load, also to meet the dynamics requirement of vibration test for test tool, and high strength and low thermal conductance will be had at low ambient temperatures.
Low temperature pressurising pipeline vibration test displacement loading system described in the utility model comprises pipeline stiff end frock 1, test pipeline 2, bellows piece 3, displacement load fixing tool 4, displacement loading screw rod 5, pipe system displacement load applying end frock 6; Be telescopic bellows piece 3 in the middle part of test pipeline 2; Displacement load fixing tool 4 is fixed on vibration table surface, test pipeline 2 is connected with the pipeline stiff end frock 1 and pipe system displacement load applying end frock 6 testing pipeline 2 two ends by displacement load fixing tool 4 central diameter circular hole, and displacement load fixing tool 4 loads screw rod 5 with pipe system displacement load applying end frock 6 by four displacements and is connected.Displacement load fixing tool 4 and pipe system displacement load applying end frock 6 load by displacement the applying that screw rod 5 realizes the displacement load testing pipeline 2 system testing the compression of telescopic bellows piece 3 in the middle part of pipeline 2 or stretching.Displacement loads screw rod 5 can carry out the displacement applying of axial compression or stretching and the applying of angle displacement to test pipeline 2.
Before test, pipeline stiff end frock 1 and displacement load fixing tool 4 are connected firmly with vibration table surface respectively.The displacement applied by vernier caliper measurement pipeline when applying axial initial displacement at loading screw rod 5 surface mark, clockwise or counterclockwise fastening loading screw rod 5 one end, four load the applying that screw rod 5 carries out carrying out test pipeline about the synchronously fastening mode of centrosymmetric two two screw rods initial displacement load respectively; When applying angle displacement, by the linear displacement amount that the displacement of vernier caliper measurement corresponding angle produces, two nuts that are clockwise or reinforcing one end counterclockwise make pipe system displacement load applying end frock 6 produce the angular deflection of angular deflection and then motoring ring test pipeline 2 one end section, reach the requirement of test angle displacement.
Claims (4)
1. a low temperature pressurising pipeline vibration test displacement loading system, is characterized in that: comprise pipeline stiff end frock (1), test pipeline (2), bellows piece (3), displacement load fixing tool (4), displacement loading screw rod (5), pipe system displacement load applying end frock (6); Test pipeline (2) middle part is telescopic bellows piece (3), displacement load fixing tool (4) is fixed on vibration table surface, test pipeline (2) is connected with the pipeline stiff end frock (1) and pipe system displacement load applying end frock (6) testing pipeline (2) two ends by displacement load fixing tool (4) central diameter circular hole, and displacement load fixing tool (4) loads screw rod (5) with pipe system displacement load applying end frock (6) by four displacements and is connected; Pipeline stiff end frock (1) is fixed on vibration table surface.
2. low temperature pressurising pipeline vibration test displacement loading system according to claim 1, is characterized in that: it is stainless steel material 0Cr18Ni9 that described displacement loads screw rod (5), and diameter is Φ 26.
3. low temperature pressurising pipeline vibration test displacement loading system according to claim 1, it is characterized in that: described pipe system displacement load applying end frock (6) bottom has U-type groove mouth (7), make pipe system displacement load applying end frock (6) can move freely along test pipeline (2) displacement load loading direction at vibration table surface, after displacement load applying is determined, pipe system displacement load applying end frock (6) is fixed on vibration table surface.
4. low temperature pressurising pipeline vibration test displacement loading system according to claim 1, is characterized in that: described displacement load fixing tool (4) loads screw rod (5) to testing the compression of pipeline (2) the telescopic bellows piece in middle part (3) or the applying realized the displacement load testing pipeline (2) system that stretches with pipe system displacement load applying end frock (6) by displacement; Displacement loads screw rod (5) can carry out the displacement applying of axial compression or stretching and the applying of angle displacement to test pipeline (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520225445.XU CN204594646U (en) | 2015-04-14 | 2015-04-14 | Low temperature pressurising pipeline vibration test displacement loading system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520225445.XU CN204594646U (en) | 2015-04-14 | 2015-04-14 | Low temperature pressurising pipeline vibration test displacement loading system |
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| Publication Number | Publication Date |
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| CN204594646U true CN204594646U (en) | 2015-08-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520225445.XU Expired - Fee Related CN204594646U (en) | 2015-04-14 | 2015-04-14 | Low temperature pressurising pipeline vibration test displacement loading system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107014576A (en) * | 2017-03-15 | 2017-08-04 | 北京强度环境研究所 | A kind of spatial pipeline system vibration test fixture |
| CN107179243A (en) * | 2017-04-17 | 2017-09-19 | 天津大学 | Self-balancing type hydraulic pressure axle power combination loading experimental rig |
| CN113008497A (en) * | 2021-02-18 | 2021-06-22 | 山东科技大学 | Test device for performance evaluation under action of dislocation load of buried pressurizing pipeline |
| CN113514216A (en) * | 2021-06-11 | 2021-10-19 | 北京航天动力研究所 | Device and method for realizing dry-wet modal test of metal corrugated pipe assembly |
-
2015
- 2015-04-14 CN CN201520225445.XU patent/CN204594646U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107014576A (en) * | 2017-03-15 | 2017-08-04 | 北京强度环境研究所 | A kind of spatial pipeline system vibration test fixture |
| CN107179243A (en) * | 2017-04-17 | 2017-09-19 | 天津大学 | Self-balancing type hydraulic pressure axle power combination loading experimental rig |
| CN113008497A (en) * | 2021-02-18 | 2021-06-22 | 山东科技大学 | Test device for performance evaluation under action of dislocation load of buried pressurizing pipeline |
| CN113008497B (en) * | 2021-02-18 | 2022-03-25 | 山东科技大学 | Test device for performance evaluation under action of dislocation load of buried pressurizing pipeline |
| CN113514216A (en) * | 2021-06-11 | 2021-10-19 | 北京航天动力研究所 | Device and method for realizing dry-wet modal test of metal corrugated pipe assembly |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150826 |