CN103698073B - A kind of marmem pipe joint fastening pressure test device and method of testing thereof - Google Patents
A kind of marmem pipe joint fastening pressure test device and method of testing thereof Download PDFInfo
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- CN103698073B CN103698073B CN201310733618.4A CN201310733618A CN103698073B CN 103698073 B CN103698073 B CN 103698073B CN 201310733618 A CN201310733618 A CN 201310733618A CN 103698073 B CN103698073 B CN 103698073B
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- pipe joint
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- 238000012360 testing method Methods 0.000 title claims abstract description 33
- 238000010998 test method Methods 0.000 title claims abstract description 6
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 35
- 239000010959 steel Substances 0.000 claims abstract description 35
- 239000011888 foil Substances 0.000 claims abstract description 31
- 238000011084 recovery Methods 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 12
- 238000005259 measurement Methods 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 238000011156 evaluation Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
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Abstract
A kind of marmem pipe joint fastening pressure test device and method of testing thereof, two foil gauges are pasted by nozzle inner wall symmetry, foil gauge is connected with dynamic strain measuring instrument, after four steel wire ropes are each passed through groove and the fixed block of loading blocks, add loads at its end, realize applying different pressure p i to by adapter outer wall by changing the weight adding loads；The test of dynamic strain measuring instrument is utilized to be pasted onto strain stress produced by the foil gauge of nozzle inner wall under different pressures effecti, thus obtaining by the demarcation relation curve between adapter outer wall pressure p and inwall strain stress.Utilize this demarcation relation, it is convenient to test out marmem pipe joint in heating recovery process to by the produced fastening pressure of adapter.
Description
Technical field
The present invention relates to the test of marmem pipe joint fastening pressure, particularly relate to test device and the method for testing thereof of a kind of marmem pipe joint fastening pressure.
Background technology
Airplane hydraulic pressure, Conventional attachment methods pneumatic, fuel system are mainly flared joint mode, and this is extensive and the most ripe a kind of type of attachment.But, this connected mode quality weight, structure are complicated, and when being particularly connected with important load-carrying construction, structural static strength and Fatigue Strength Effect is relatively big, and complex process, reliability and safety are relatively poor.At present, world's Advanced Aircraft manufactures country widely used marmem pipe joint without flared joint mode, and the field such as China's Aeronautics and Astronautics, nuclear power also has started to adopt marmem pipe joint without flared joint mode.The pipeline connecting mode of this superior performance, have not easy to leak, the feature such as lightweight, installing space is little, replace now widely used flared type to connect with it, reliability and the safety of aircraft system can be remarkably reinforced.But the fastening pressure how directly measuring marmem pipe joint it is not yet seen report, currently mainly by the laboratory facilities such as " force of explosion " and " pulling-out force " indirectly, non-quantitationization ground estimation marmem pipe joint fastening pressure.This evaluation method operating cost is high, reliability is low, practicality is not strong.For the accurate evaluation marmem pipe joint reliability without flared joint mode, engineer applied field is in the urgent need to a kind of apparatus and method that can directly measure marmem pipe joint fastening pressure.
Summary of the invention
The test device of a kind of marmem pipe joint fastening pressure and method of testing thereof are it is an object of the invention to provide.It can realize the direct measurement to the fastening pressure that marmem pipe joint pipeline connecting parts produces in heating recovery process simply and easily.
The present invention is achieved like this: first passes through fastening pressure caliberating device and sets up the demarcation relation between the outer wall pressure p and inwall strain stress taken over；Then utilize this demarcation relation, test device by fastening pressure and test the fastening pressure that marmem pipe joint produces in intensification recovery process.
Fastening pressure caliberating device includes foil gauge, is taken over, arc steel plate, loading blocks, steel wire rope, pulley, bracing frame, add loads, dynamic strain measuring instrument and computer, it is characterised in that posted foil gauge by nozzle inner wall symmetry；Four arc steel plates etc. height, be close to by adapter outer surface equably, be provided with equidistant gap between adjacent arc steel plate；Arc steel plate and loading blocks connect by being weldingly connected, and arc steel plate uniformly acts on by adapter outer surface for power loading blocks passed over, and control is by the position of adapter outer surface pressure and active area thereof；Loading blocks is for being transformed into the active force to arc steel plate by adding loads, thus realizing applying a series of known pressure to by adapter outer surface；Each loading blocks is provided with the groove of four axles concentricity with it, is provided with the gap corresponding with arc steel plate interstitial site between loading blocks；Four steel wire ropes are each passed through the groove of loading blocks, after every steel wire rope is each passed through a pair pulley, connects at its end and add loads, and wherein the every pair of pulley is symmetrically connected to the top of bracing frame.
Fastening pressure actual measurement device includes being taken over, tested marmem pipe joint, foil gauge, dynamic strain measuring instrument and computer, it is characterized in that, being posted foil gauge by nozzle inner wall symmetry, the method for attaching of foil gauge is identical with the method for attaching in caliberating device.
Adopt the method for testing of described marmem pipe joint fastening pressure test device, it is characterised in that described method of testing comprises the following steps:
(1) foundation of relation is demarcated between adapter outer wall pressure p and inwall strain stress
A) caliberating device is assembled according to described fastening pressure caliberating device；
B) caliberating device is utilized to apply a series of known pressure pi to by adapter；
C) test under different pressures effect by the corresponding strain stress of nozzle inner walli；
D) draw by the demarcation relation curve between adapter outer wall pressure p and inwall strain stress；
E) curve is fitted, sets up by the functional relation p=f (ε) between adapter outer wall pressure p and inwall strain stress；
(2) test of marmem pipe joint fastening pressure
A) marmem pipe joint is enclosed within by adapter by engineering matching requirements；
B) survey device according to described fastening pressure and assemble actual measurement device；
C) marmem pipe joint pipeline connecting parts is put in heated oven and heat up；
D) by nozzle inner wall strain stress in test temperature-rise periodc, and it is transferred to computer；
E) according to εc, computer utilize the functional relationship of p=f (ε) to calculate and demonstrate the fastening pressure that marmem pipe joint produces in intensification recovery process.
The solution have the advantages that: it is small and exquisite that the present invention tests device, easy to operate, test data are reliably directly perceived, it is achieved that directly measuring marmem pipe joint fastening pressure, and solving at present cannot a difficult problem measured directly to it.
Accompanying drawing explanation
Fig. 1 is fastening pressure caliberating device structural representation of the present invention.
Fig. 2 be Fig. 1 is taken over, the structure top view of arc steel plate and loading blocks.
Fig. 3 is the section of structure of B-B in Fig. 2.
Fig. 4 is the section of structure of A-A in Fig. 2.
Fig. 5 is subject to the lower inwall strain testing figure of known pressure p effect by adapter outer wall in caliberating device.
Fig. 6 is by the demarcation relation curve between adapter outer wall pressure p and inwall strain stress.
Fig. 7 is fastening pressure actual measurement device schematic diagram.
In the drawings, 1, by adapter 2, arc steel plate 3, loading blocks 4, steel wire rope 5, loads 6, bracing frame 7, pulley 8, foil gauge 9, wire 10, dynamic strain measuring instrument 11, computer 12, marmem pipe joint are added.
Detailed description of the invention
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 5, the demarcation relation of the fastening pressure that the present invention relates to is set up and is achieved like this, and it includes by adapter 1, arc steel plate 2, loading blocks 3, steel wire rope 4, adds loads 5, bracing frame 6, pulley 7 and foil gauge 8.Foil gauge 8 is posted by adapter 1 inwall symmetry；Four arc steel plate 2 height such as grade, it is close to by adapter 1 periphery equably, between adjacent arc steel plate 2, is provided with equidistant gap；The periphery welding loading blocks 3 of arc steel plate 2, loading blocks is for being transformed into the active force to arc steel plate by adding loads, thus realizing applying a series of known pressure to by adapter outer surface；Each loading blocks 3 is provided with the groove of four axles concentricity with it, is provided with the gap corresponding with arc steel plate 2 interstitial site between loading blocks 3；Four steel wire ropes 4 are each passed through the groove of loading blocks；After every steel wire rope 4 is each passed through a pair pulley 7, connects at its end and add loads 5；Every pair of pulley 7 is symmetrically connected to the top of bracing frame 6.Described bracing frame 6 is four；Described foil gauge 8 is two, and they are along by the height such as adapter 1 inwall, arrange equably；Described foil gauge 8 connects dynamic strain measuring instrument 10 by wire 9.
As shown in Figure 6, the actual measurement of the fastening pressure that the present invention relates to is achieved like this, and it includes by adapter 1, tested marmem pipe joint 12, foil gauge 8, dynamic strain measuring instrument 10 and computer 11.Being posted foil gauge 8 by nozzle inner wall symmetry, the method for attaching of foil gauge is identical with the method for attaching in caliberating device；Dynamic strain measuring instrument 10 connects computer 11.
1) produce fastening pressure caliberating device by Design and Machining as shown in Figure 1, Figure 2, Figure 3 and Figure 4, and assemble；
2) being placed in caliberating device by adapter, and be pasted two foil gauges by nozzle inner wall symmetry, foil gauge is connected (see accompanying drawing 5) with dynamic strain measuring instrument；
3) after four steel wire ropes are each passed through groove and the fixed block of loading blocks, add loads (see accompanying drawing 1) at its end, realize applying different pressure p i to by adapter outer wall by changing the weight adding loads；
4) test of dynamic strain measuring instrument is utilized to be pasted onto strain stress produced by the foil gauge of nozzle inner wall under different pressures effecti；
5) by (pi～εi) test Plotting data is by the demarcation relation curve (see accompanying drawing 6) between adapter outer wall pressure p and inwall strain stress, and curve is fitted, it is thus achieved that by the functional relation p=f (ε) between adapter outer wall pressure p and inwall strain stress；
6) marmem pipe joint is enclosed within by adapter by engineering matching requirements, two foil gauges are pasted by nozzle inner wall symmetry, foil gauge is connected with dynamic strain measuring instrument, dynamic strain measuring instrument is connected with computer (see accompanying drawing 7), strain gauge adhesion mode and all identical with accompanying drawing 5 with dynamic strain measuring instrument connected mode；
7) marmem pipe joint pipeline connecting parts is put in heated oven and heat up, temperature-rise period is gone out strain stress produced by nozzle inner wall foil gauge by dynamic strain measuring instrument real-time testingcAnd be transferred to computer, computer calculate and demonstrate marmem pipe joint in heating recovery process to by the produced fastening pressure of adapter according to p=f (ε) functional relationship.
The present invention's it is crucial that set up by the demarcation relation between adapter outer wall pressure p and inwall strain stress, and it the technical scheme is that and will be placed in pressure applying means by adapter, as shown in Figure 1, Figure 2 and Figure 4；Being pasted two foil gauges by nozzle inner wall symmetry, foil gauge is connected with dynamic strain measuring instrument (see figure 5)；Four steel wire ropes add loads at its end after being each passed through groove and the fixed block of loading blocks, realize applying different pressure p i to by adapter outer wall by changing the weight adding loads；The test of dynamic strain measuring instrument is utilized to be pasted onto strain stress produced by the foil gauge of nozzle inner wall under different pressures effecti, thus obtaining by the demarcation relation curve (see accompanying drawing 6) between adapter outer wall pressure p and inwall strain stress.Utilize this demarcation relation, it is convenient to test out marmem pipe joint in heating recovery process to by the produced fastening pressure (see figure 7) of adapter.
Claims (5)
1. a marmem pipe joint fastening pressure test device, it includes fastening pressure caliberating device and fastening pressure actual measurement device；Described fastening pressure caliberating device includes foil gauge, is taken over, arc steel plate, loading blocks, steel wire rope, pulley, bracing frame, add loads, dynamic strain measuring instrument and computer, it is characterised in that described posted described foil gauge by nozzle inner wall symmetry；Four described arc steel plates etc. are close to described by adapter outer surface highly, equably, are provided with equidistant gap between adjacent described arc steel plate；Described arc steel plate connects by being weldingly connected with described loading blocks, described arc steel plate is described by adapter outer surface for the power that described loading blocks passes over being uniformly acted on, and controls the described position by adapter outer surface pressure and active area thereof；Described loading blocks is for being transformed into the active force to described arc steel plate by the described loads that adds, thus realizing being applied a series of known pressure to described by adapter outer surface；Each described loading blocks is provided with the groove of four axles concentricity with it, is provided with the gap corresponding with described arc steel plate interstitial site between described loading blocks；Four described steel wire ropes are each passed through the groove of described loading blocks, after every described steel wire rope is each passed through pulley described in a pair, are adding loads described in connecting at its end, and wherein the every pair of described pulley is symmetrically connected to the top of support frame as described above；Described fastening pressure actual measurement device includes tested marmem pipe joint, described tested marmem pipe joint is enclosed within described by adapter by engineering matching requirements, described being posted described foil gauge by nozzle inner wall symmetry, the method for attaching of described foil gauge is identical with the method for attaching in described fastening pressure caliberating device.
2. a kind of marmem pipe joint fastening pressure test device as claimed in claim 1, it is characterised in that described loading blocks and bracing frame are four.
3. marmem pipe joint fastening pressure test device as claimed in claim 1 a kind of, it is characterised in that described foil gauge is two, they along by nozzle inner wall circumference to all arranging.
4. a kind of marmem pipe joint fastening pressure test device as described in claim 1 or 3, it is characterised in that described foil gauge connects dynamic strain measuring instrument by wire, and dynamic strain measuring instrument connects computer.
5. adopt the method for testing of marmem pipe joint fastening pressure as claimed in claim 1 test device, it is characterised in that described method of testing comprises the following steps:
(1) foundation of relation is demarcated between adapter outer wall pressure p and inwall strain stress
A) described in claim 1, fastening pressure caliberating device assembles caliberating device；
B) caliberating device is utilized to apply a series of known pressure p to by adapteri；
C) test under different pressures effect by the corresponding strain stress of nozzle inner walli；
D) draw by the demarcation relation curve between adapter outer wall pressure p and inwall strain stress；
E) curve is fitted, sets up by the functional relation p=f (ε) between adapter outer wall pressure p and inwall strain stress；
(2) test of marmem pipe joint fastening pressure
A) marmem pipe joint is enclosed within by adapter by engineering matching requirements；
B) described in claim 1, fastening pressure actual measurement device assembles actual measurement device；
C) marmem pipe joint pipeline connecting parts is put in heated oven and heat up；
D) by nozzle inner wall strain stress in test temperature-rise periodc, and it is transferred to computer；
E) according to εc, computer utilize the functional relationship of p=f (ε) to calculate and demonstrate the fastening pressure that marmem pipe joint produces in intensification recovery process.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310733618.4A CN103698073B (en) | 2013-12-27 | 2013-12-27 | A kind of marmem pipe joint fastening pressure test device and method of testing thereof |
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| CN201310733618.4A CN103698073B (en) | 2013-12-27 | 2013-12-27 | A kind of marmem pipe joint fastening pressure test device and method of testing thereof |
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| CN103698073B true CN103698073B (en) | 2016-07-27 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105067251A (en) * | 2015-08-19 | 2015-11-18 | 中国航空工业集团公司西安飞机设计研究所 | Low-temperature failure detector for titanium-nickel-iron memory alloy joint |
| CN105628268B (en) * | 2015-12-22 | 2018-08-14 | 福建联迪商用设备有限公司 | POS machine safety contact pressure testing system and test method |
| CN210108579U (en) * | 2019-07-16 | 2020-02-21 | 西安建筑科技大学 | Heating device for testing restraining restoring force of shape memory alloy |
| CN110631816A (en) * | 2019-10-08 | 2019-12-31 | 重庆凰圆汽车饰件有限公司 | Be used for car bumper intensity check out test set |
| CN113375848B (en) * | 2021-06-08 | 2023-03-21 | 哈尔滨工业大学 | Soil pressure gauge based on shape memory polymer supports |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2215615A1 (en) * | 1973-10-24 | 1974-08-23 | Poclain Sa | |
| DE2533078A1 (en) * | 1975-07-24 | 1977-02-10 | Kromberg Ges Fuer Ingenieurlei | Indirectly coupled press. gauge for pipelines - has strain gauge clamped to pipe exterior to measure internal press. |
| US4974679A (en) * | 1988-07-05 | 1990-12-04 | Reuter Peter A | Load cell |
| CN103148971A (en) * | 2013-02-06 | 2013-06-12 | 合肥通用机械研究院 | Method for testing local stress field of end part structure of thermal jacket of ultrahigh-pressure tubular reactor |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60238738A (en) * | 1984-05-11 | 1985-11-27 | Sumitomo Metal Ind Ltd | Clamping testing method and clamping testing device of oil well pipe joint |
| JP3405848B2 (en) * | 1995-04-05 | 2003-05-12 | 株式会社東芝 | Shape memory alloy joint strength determination method |
| JPH1090085A (en) * | 1996-09-20 | 1998-04-10 | Mitsubishi Heavy Ind Ltd | Evaluation method for welding residual stress |
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2013
- 2013-12-27 CN CN201310733618.4A patent/CN103698073B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2215615A1 (en) * | 1973-10-24 | 1974-08-23 | Poclain Sa | |
| DE2533078A1 (en) * | 1975-07-24 | 1977-02-10 | Kromberg Ges Fuer Ingenieurlei | Indirectly coupled press. gauge for pipelines - has strain gauge clamped to pipe exterior to measure internal press. |
| US4974679A (en) * | 1988-07-05 | 1990-12-04 | Reuter Peter A | Load cell |
| CN103148971A (en) * | 2013-02-06 | 2013-06-12 | 合肥通用机械研究院 | Method for testing local stress field of end part structure of thermal jacket of ultrahigh-pressure tubular reactor |
Non-Patent Citations (1)
| Title |
|---|
| 机器人六维腕力传感器标定试验台误差分析与研究;郑红梅等;《计量学报》;20051030;第26卷(第4期);第334页 * |
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