CN203241414U - Non-contact rubber test device - Google Patents
Non-contact rubber test device Download PDFInfo
- Publication number
- CN203241414U CN203241414U CN 201220741836 CN201220741836U CN203241414U CN 203241414 U CN203241414 U CN 203241414U CN 201220741836 CN201220741836 CN 201220741836 CN 201220741836 U CN201220741836 U CN 201220741836U CN 203241414 U CN203241414 U CN 203241414U
- Authority
- CN
- China
- Prior art keywords
- test
- rubber
- contactless
- test piece
- end cap
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The utility model discloses a non-contact rubber test device which comprises a device body (2), a device end cover (1), an eddy current sensor probe (6), a limiting sleeve (7), a rubber test piece (8), a test auxiliary plate (9) and an electric heating wire (3), wherein a test cavity (10), a heating cavity (11), a liquid feeding hole (12) and a liquid discharging hole (13) are formed in the device body (2); the heating cavity (11) is arranged below the test cavity (10); the device end cover (1) is fixed at an opening of the device body (2) through a pressure bearing bolt (5); a first sealing ring (4) is sealed between the device end cover (1) and the device body (2); the eddy current sensor probe (6) is arranged in the middle of the device end cover (1) and extends into the test cavity (10); the limiting sleeve (7) is arranged at the bottom of the test cavity (10); the rubber test piece (8) is arranged in the limiting sleeve (7); the test auxiliary plate (9) is arranged above the rubber test piece (8); the electric heating wire (3) is arranged inside the heating cavity (11). By the use of the non-contact rubber test device, the measurement precision can be improved, and the safety is improved.
Description
Technical field
The utility model packing element testing of materials technology is particularly about a kind of contactless rubber testing device.
Background technology
Development along with national economy, the demand of the petroleum gas energy constantly increases, the development object of hydrocarbon resources is by turning to gradually conventional resource and unconventional resource to lay equal stress on take conventional resource as main, requirement to all kinds of subsurface tools is also more and more higher, and packer is exactly one of them of all kinds of subsurface tools.Present stage, packer develops into up-to-date Self-expanding packer from traditional mechanical compression type packer, inflatable packer.Self-expanding packer is easy with its machinery-free moving component, site operation, can adapt to the remarkable advantages such as irregular bore hole environment and obtain a wide range of applications at world's gas industries.The packing element of this packer adopts special oil suction or water swelling rubber material to make, different subsurface environments needs different expanded rubber materials with operating mode, elastomeric material needs to do performance test after finishing trial-production, wherein, expansivity is a very important parameter index that carries out performance test, and rubber test piece to be measured need to be in liquid mediums, carry out the measurement of continual volumetric expansion amount under different temperatures and the pressure condition.
The method of at present expanded rubber being carried out the expansivity test mainly is manual measurement, be to get the regular time point every day, the slip-stick artist closes heating system and the compression system of container when arriving this time, make its inner normal temperature and pressure conditions that recovers, open afterwards container and take out rubber test piece, use the variation of the instrument measurement sizes such as slide calliper rule.
At present, also there is use linear variable difference transformer (LVDT) to realize the automatic measurement of specimen size.Linear variable difference transformer (Linear Variable Differential Transformer, LVDT) belong to linear displacement transducer, its principle of work briefly is the movable transformer of iron core, it is by a primary coil, two secondary coils, iron core, coil rack, the parts such as shell form.The LVDT technology can be used for without rub measurement, does not usually have the entity contact between the movable core of LVDT and the coil, that is to say that LVDT is the parts that do not have friction.It is used to bear lightweight iron core load, but the important measurement that can't bear friction load.
LVDT can be widely used in the national economy all trades and professions such as space flight and aviation, machinery, building, weaving, railway, coal, metallurgy, plastics, chemical industry and research institutions, is used for measuring the high-tech product of elongation, vibration, object thickness, expansion etc.Yet in practical operation, the shortcoming of said method and device mainly contains:
(1) poor stability: be the simulation subsurface environment, the test(ing) medium that test period uses may use corrosive liquids or gas, takes out test piece if will constantly open container when measuring, and just may damage testing crew, and environment is brought adverse effect;
(2) test condition can not satisfy request for utilization fully: the concentration of existing test unit fluid medium can not be regulated, and the method error of manual measurement specimen size is larger;
(3) testing efficiency is low: need repeatedly interrupt heating, pressurization in the test process, take out test piece, put back in the container after measurement is finished and again heat, pressurize, test process is consuming time longer, is not suitable in enormous quantities, polytype expanded rubber test;
(4) proving installation itself brings interference to measurement result: use in the test unit of LVDT technology, iron core and the rubber test piece of LVDT keep in touch constantly, need to overcome the gravity of iron core during rubber swelling, and this just causes a deviation to the actual swell increment of rubber.
The utility model content
The fundamental purpose of the utility model embodiment is to provide a kind of contactless rubber testing device, and, proving installation itself low with poor stability, the testing efficiency that solves existing expanded rubber measuring technology brings the problem of interference to measurement result.
To achieve these goals, the utility model embodiment provides a kind of contactless rubber testing device, it is characterized in that, described contactless rubber testing device comprises: device body 2, the inside of described device body 2 has a test chamber 10, heating chamber 11, inlet opening 12 and fluid hole 13, and described heating chamber 11 is arranged at the below of described test chamber 10; Device end cap 1, described device end cap 1 is fixed on the opening part of described device body 2 by pressure-bearing bolt 5, seals by the first O-ring seal 4 between described device end cap 1 and the described device body 2; Current vortex sensor probe 6 connects a signal processing system, and described current vortex sensor probe 6 is arranged at the middle part of described device end cap 1, and is deep in the described test chamber 10; Stop collar 7 is arranged at the bottom of described test chamber 10; Rubber test piece 8 is arranged in the described stop collar 7; Test accessory plate 9 is arranged at described rubber test piece 8 tops; Electrical heating wire 3 is arranged at described heating chamber 11 inside.
Further, seal by the second O-ring seal 14 between described current vortex sensor probe 6 and the described device end cap 1.
Further, described current vortex sensor probe 6 is towards described rubber test piece 8.
Further, described stop collar 7 is non-metallic material.
Further, the internal diameter of described stop collar 7 is consistent with the diameter of described rubber test piece 8.
Further, described test accessory plate 9 is metal material.
Further, described inlet opening 12 and fluid hole 13 are connected with the medium pumping system respectively.
The beneficial effect of the embodiment of the invention is, a kind of contactless rubber testing device of the present invention has been abandoned the LVDT linear displacement transducer technology that iron core contacts with rubber, adopt current vortex sensor as the critical component of the swell increment of measuring expanded rubber, improved measuring accuracy, are furnished with simultaneously the corollary systems such as automatic constant temperature system (electrical heating wire), concentration of medium regulating system (connecting inlet opening and fluid hole by the medium pumping system), compact overall structure, security and measuring accuracy improve greatly, have realized online, automaticity measurement.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, the accompanying drawing of required use was done to introduce simply during the below will describe embodiment, apparently, accompanying drawing in the following describes only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the sectional view according to the non-contact testing device of the utility model embodiment;
Fig. 2 is the structural representation of signal processing system;
Fig. 3 is the partial enlarged drawing according to stop collar 7 parts of the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
Existing expanded rubber measuring technology exists that poor stability, testing efficiency are low, proving installation itself brings the problem of interference to measurement result.Based on this, the utility model embodiment provides a kind of non-contact testing device for the rubber detection, to address the above problem.Below in conjunction with accompanying drawing the utility model is elaborated.
As shown in Figure 1, this enforcement provides a kind of contactless rubber testing device, and this contactless rubber testing device comprises: device end cap 1, device body 2, current vortex sensor probe 6, stop collar 7, rubber test piece 8 and test accessory plate 9.
The inside of device body 2 has a test chamber 10, heating chamber 11, inlet opening 12 and fluid hole 13.Heating chamber 11 is arranged at the below of test chamber 10.Inlet opening 12 and fluid hole 13 are connected with the medium pumping system respectively, the medium pumping system provides required test(ing) medium for the test of rubber, the direction of arrow as shown in Figure 1, the medium pumping system pumps into the test chamber 10 of contactless rubber testing device with test(ing) medium by inlet opening 12, and by fluid hole 13 test(ing) medium is pumped.
Device end cap 1 is fixed on the opening part of described device body 2 by a plurality of pressure-bearing bolts 5, pressure-bearing bolt 5 be distributed in respectively device end cap 1 around.In addition, seal by O-ring seal 4 between device end cap 1 and the device body 2, can play the purpose that prevents that test(ing) medium from leaking.Preferably, can dispose according to the actual needs many group O-ring seals 4.
Current vortex sensor probe 6 connects a signal processing system (not shown in figure 1), be arranged at the middle part of device end cap 1, and be deep in the described test chamber 10, current vortex sensor probe 6 need to be towards rubber test piece 8, with height and the change in size information that reads rubber test piece 8.Signal processing system can receive height and the change in size information of current vortex sensor probe 6 rubber test pieces that constantly read 8 of sending, and carries out signal and processes.The structural representation of signal processing system mainly is comprised of microcontroller, I/O interface, memory module, analog-to-digital conversion module (A/D), system power supply, input equipment and output device as shown in Figure 2.Input equipment comprises keyboard, mouse etc., and output device comprises display etc., and the signal processing of signal processing system is the known technology of this area, does not repeat them here.
In addition, seal by O-ring seal 14 between current vortex sensor probe 6 and the device end cap 1, can effectively prevent the leakage of test(ing) medium.
As seen from the above description, by contactless rubber testing device of the present utility model, in test process, realization is to the non-contact measurement of test film, and by current vortex sensor raising measuring accuracy, can overcome preferably existing expanded rubber measuring technology and the existing defective of corollary apparatus, for development and the test of oil-gas mining instrument provides a kind of efficient test platform, improve research and production efficient.
When utilizing said apparatus to carry out the expanded rubber test, expanded rubber sheet 8 is carried out respective handling, put into stop collar 7.The internal diameter of stop collar 7 is consistent with the diameter of rubber test piece 8, only have height dimension to change during with the assurance rubber swelling, and radial dimension is constant, can only just can calculate like this cubical expansivity of expanded rubber by the variation of measuring height.Then, place test accessory plate 9 at expanded rubber sheet 8, again stop collar 7 is put into proving installation, install device end cap 1, connect pressure-bearing bolt 5, and tighten, guarantee enough impermeability.
Before the test, first to the proving installation pressure testing, whether working properly with the checking O-ring seal.Then to the current vortex sensor test of switching on, and carry out initialization, the original dimension of expanded rubber sheet 8 is demarcated.The medium pumping system is opened, and makes medium be full of the inner chamber of whole device.The electric heating system that connects electrical heating wire 3 is opened, and is adjusted to assigned temperature, begins test.Test period, current vortex sensor probe 6 constantly reads the height dimension change information of expanded rubber sheet 8, and sends signal processing system to.
In the operating process of reality, above-mentioned proving installation is mainly used in the packing element elastomeric material test of Self-expandable packer, rubber test piece 8 in the above-mentioned proving installation can be preferably the circular film of height 4mm, diameter 30mm, the thickness of test accessory plate 9 is preferably 0.5mm, and stop collar 7 is preferably by stupalith to be made.The test condition that proving installation provides can be, the highest 25MPa of pressure, and temperature is the highest 170 ℃.
The utility model adopts current vortex sensor as the critical component of the swell increment of measuring expanded rubber, has improved measuring accuracy, and the below simply introduces the serviceability of current vortex sensor:
Eddy current sensor is a kind of non-contacting linearization metering outfit, and metal conductor measured (namely testing accessory plate 9) is measured apart from the distance of detecting head surface in the ground noncontact of energy Static and dynamic, high linearity, high resolution ground.The relative displacement of Static and dynamic changes between eddy current sensor energy Measurement accuracy measured body (must be metallic conductor) and the probe end face.Eddy current sensor is widely used in testing in the manufacturing, the equipment Inspection of industrial basic research, precision equipment.Have high resolving power and high sampling rate, but Self-adjustment zero-bit, gain and linearity can select to prolong the functions such as cable, temperature compensation, have the multisensor synchronizing function, be not subjected to the impact of humidity, dust, to the advantage such as environmental requirement is low.
Fore-lying device medium-high frequency oscillating current in the eddy current sensor system flows into probe coil by extension cable, produces the magnetic field of alternation in the coil of probe head.When close this magnetic field of tested metallic object, then produce induction current in this metal surface, meanwhile this current vortex field also produces the alternating magnetic field of a direction and head coil opposite direction, because its retroaction, make amplitude and the phase place of head coil high-frequency current obtain changing (virtual impedance of coil), geometric configuration, physical dimension, power frequency and the head coil of this variation and metallic object magnetic permeability, conductivity, coil is to the relating to parameters such as distance on metallic conductor surface.
In the specific implementation, the current vortex sensor probe specification that adopts of above-mentioned contactless rubber testing device is as follows: range is 0.05～63.5mm; Can join various analogue signal processors; Probing shell is made by stainless steel and engineering plastics PEEK; System adopts two probes and differential pick-up, can reduce the impact of temperature, radiation and other environment; Sensor and cable serviceability temperature are the highest 180 ℃; Resolution is 1nm; Thermotolerance and good stability: 1.27x10
-4The mm/ month or better; High sensitivity is up to 394mV/ μ m; Low-power consumption: less than 2W.
In sum, the contactless rubber testing device of realizing by the utility model embodiment has following features:
(1) non-contact measurement: eliminated the measuring error problem that contact measurement causes, improved measuring accuracy and accuracy;
(2) on-line measurement mode: measurement, has been avoided repeatedly opening the loaded down with trivial details processes such as test unit, decrease temperature and pressure without impact on the rubber swelling process;
(3) measuring accuracy is high: the current vortex sensor technology has very high precision (reaching nanoscale);
(4) security is good: in the whole test process, test unit is in closed state fully, and the situation that does not have dielectric leakage occurs, and is favourable to environment;
(5) test condition is adjustable: can carry out fine adjustment to the temperature of test(ing) medium, to adapt to the test request of all kinds of rubber.
Can overcome preferably existing expanded rubber measuring technology and the existing defective of corollary apparatus by the utility model embodiment, by contactless on-line measurement mode, for development and the test of oil-gas mining instrument provides a kind of efficient security good test platform, improve research and production efficient.
One of ordinary skill in the art will appreciate that all or part of step that realizes in above-described embodiment method can come the relevant hardware of instruction finish by program, this program can be stored in the computer read/write memory medium, such as ROM/RAM, magnetic disc, CD etc.
Above-described specific embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; institute is understood that; the above only is specific embodiment of the utility model; and be not used in and limit protection domain of the present utility model; all within spirit of the present utility model and principle, any modification of making, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (7)
1. a contactless rubber testing device is characterized in that, described contactless rubber testing device comprises:
Device body (2), the inside of described device body (2) have a test chamber (10), heating chamber (11), inlet opening (12) and fluid hole (13), and described heating chamber (11) is arranged at the below of described test chamber (10);
Device end cap (1), described device end cap (1) is fixed on the opening part of described device body (2) by pressure-bearing bolt (5), passes through the first O-ring seal (4) between described device end cap (1) and the described device body (2) and seals;
Current vortex sensor probe (6) connects a signal processing system, and described current vortex sensor probe (6) is arranged at the middle part of described device end cap (1), and is deep in the described test chamber (10);
Stop collar (7) is arranged at the bottom of described test chamber (10);
Rubber test piece (8) is arranged in the described stop collar (7);
Test accessory plate (9) is arranged at described rubber test piece (8) top;
Electrical heating wire (3) is arranged at described heating chamber (11) inside.
2. contactless rubber testing device according to claim 1 is characterized in that, seals by the second O-ring seal (14) between described current vortex sensor probe (6) and the described device end cap (1).
3. contactless rubber testing device according to claim 1 is characterized in that, described current vortex sensor probe (6) is towards described rubber test piece (8).
4. contactless rubber testing device according to claim 1 is characterized in that, described stop collar (7) is non-metallic material.
5. contactless rubber testing device according to claim 4 is characterized in that, the internal diameter of described stop collar (7) is consistent with the diameter of described rubber test piece (8).
6. proving installation according to claim 5 is characterized in that, described test accessory plate (9) is metal material.
7. proving installation according to claim 5 is characterized in that, described inlet opening (12) and fluid hole (13) are connected with the medium pumping system respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220741836 CN203241414U (en) | 2012-12-28 | 2012-12-28 | Non-contact rubber test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220741836 CN203241414U (en) | 2012-12-28 | 2012-12-28 | Non-contact rubber test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203241414U true CN203241414U (en) | 2013-10-16 |
Family
ID=49318697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220741836 Expired - Fee Related CN203241414U (en) | 2012-12-28 | 2012-12-28 | Non-contact rubber test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203241414U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI694247B (en) * | 2019-06-28 | 2020-05-21 | 國傑工業有限公司 | Expantion ratio detection system |
| CN111948212A (en) * | 2020-06-18 | 2020-11-17 | 宁国丰彩电子科技有限公司 | Transformer skeleton detection device |
-
2012
- 2012-12-28 CN CN 201220741836 patent/CN203241414U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI694247B (en) * | 2019-06-28 | 2020-05-21 | 國傑工業有限公司 | Expantion ratio detection system |
| CN111948212A (en) * | 2020-06-18 | 2020-11-17 | 宁国丰彩电子科技有限公司 | Transformer skeleton detection device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104179975B (en) | Controllable mechanical seal based on closing force change | |
| CN101324186B (en) | Device for measuring oil, gas, water three phase flow containing rate | |
| Zhang et al. | Stress and strain analysis of spherical sealing cups of fluid-driven pipeline robot in dented oil and gas pipeline | |
| Zhang et al. | Fractal modeling of fluidic leakage through metal sealing surfaces | |
| CN203241414U (en) | Non-contact rubber test device | |
| Wang et al. | A Triboelectric‐Nanogenerator‐Based Gas–Solid Two‐Phase Flow Sensor for Pneumatic Conveying System Detecting | |
| CN102706551B (en) | Lip seal test experiment table | |
| CN101949803A (en) | Rock experimental apparatus | |
| Wang et al. | Evaluation of the performance of capacitance sensor for concentration measurement of gas/solid particles flow by coupled fields | |
| CN204128757U (en) | A kind of proving installation of sliding-contact packing sealing property | |
| CN201662597U (en) | Fluid pipeline electrostatic measuring device | |
| Gao et al. | Resistance characteristics of coal slime in pipe flow at high pressure | |
| Miducov et al. | 3D technology in production of sealed containers for chemical industry devices | |
| Wang et al. | Research on the cone angle and clearance of main pump seal | |
| Yue et al. | Experimental evaluation of multi-jointed soft detection arm of geometry inspection gauges for detecting internal convex defects in natural gas pipelines | |
| CN203615871U (en) | Airtight double-shoulder instrument for measuring depth of sealing surfaces in drill-rod joint | |
| CN209459594U (en) | A kind of non-contact mechanical seal end face fluid film thickness measurement device | |
| Jaszak | A new solution of the semi-metallic gasket increasing tightness level | |
| Xiaolong et al. | Development of the detection arm of multichannel geometry pig of oil and gas pipeline | |
| Zhang et al. | Study on AE in mechanical seal lift-off recognition of mechanical main shaft | |
| CN202486033U (en) | Experimental device for medium corrosion resistance | |
| CN201795965U (en) | Rock experiment device | |
| Dev et al. | Comparison of leakage characteristics of viton and polytetrafluoroethylene seals in gas-lift valve applications | |
| Zhou et al. | Research on the influence of composite defects on quantitative pattern in MFL detection of tubing | |
| Lu | Application Research on Sensors and Detection Technology in Mechatronics System |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20131016 Termination date: 20211228 |