CN207964575U - A kind of plastics resistance to liquid energy scale experimental provision - Google Patents

A kind of plastics resistance to liquid energy scale experimental provision Download PDF

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Publication number
CN207964575U
CN207964575U CN201820115793.5U CN201820115793U CN207964575U CN 207964575 U CN207964575 U CN 207964575U CN 201820115793 U CN201820115793 U CN 201820115793U CN 207964575 U CN207964575 U CN 207964575U
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China
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constant temperature
chamber
coupon
corrosion
rack
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CN201820115793.5U
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Chinese (zh)
Inventor
李茂东
叶伟文
黄国家
翟伟
李仕平
吴文栋
涂欣
辛明亮
王志刚
何勃
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Guangzhou Special Equipment Testing And Research Institute Guangzhou Special Equipment Accident Investigation Technology Center Guangzhou Elevator Safety Operation Monitoring Center
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Guangzhou Special Pressure Equipment Inspection and Research Institute
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Abstract

The utility model discloses a kind of plastics resistance to liquid energy scale experimental provisions, including accommodating groove and rack for test tube, accommodating groove has corrosion chamber and constant temperature chamber, it is in an intermediate position to corrode chamber, constant temperature chamber is around corrosion chamber, corroding has thermally conductive partition board between chamber and constant temperature chamber, constant temperature intracavitary is equipped with constant temperature system and can stir the circulatory system of water, rack for test tube is installed to corrosion intracavitary, there is several groups circular hole and coupon on rack for test tube, the upper end of coupon is equipped with coupon lid, coupon lid is perforated with several, the lower end of coupon has several perforation, the height of each coupon lid is below the height of corrosion chamber, agitating device is equipped between the bottom of accommodating groove and the lower end of rack for test tube.The program can be unfolded simultaneously various, more materials, constant temperature, the material corrosion experiment of multicycle, flow regime, and low energy consumption, it is easy to operate, expand it is convenient.This utility model is used for plastics corrosion experimental device field.

Description

A kind of plastics resistance to liquid energy scale experimental provision
Technical field
The utility model is related to plastics corrosion experimental device fields, more particularly to a kind of plastics resistance to liquid energy scale Experimental provision.
Background technology
With the fast development of petro chemical industry, oil deep process technology is increasingly perfect, and plastic products type is increasingly more Sample, yield increase sharply.Plastic tube is small, corrosion-resistant with its density, resistance is small, easy to install, low cost, energy saving notable Advantage obtains the extensive use of pipeline engineering circle.From the 1950s, plastic tube manufacturer of developed country and pipeline engineering Boundary has carried out a large amount of cooperations, and plastic tube is promoted to account for critical role in pipeline engineering, material also with the trend of plastics steel not Disconnected development.China develops and uses plastic tube since 20 world sixties, and the eighties, plastic tube started to transport in city gas Middle application.Due to the implementation of China's Energy restructuring and clean energy resource policy and the continuous propulsion of Urbanization Construction, naturally The usage amount of gas increases year by year, promotes the application amount of Plastic Gas pipeline constantly soaring.China's plastic conduit is produced as within 2014 13000000 tons, be 7.44% compared with industry overall growth in 2013, the occupation rate of market of plastic conduit is in all material pipeline Ratio is 40~50% or so.In recent years, house town and country construction industry was always one of main application fields of plastic conduit, Annual plastic pipe work dosage is about at 300~4,000,000 tons, and wherein municipal works pipeline accounts for about 2/3, and architectural engineering pipeline is about 1/3 is accounted for, accumulation usage amount of the plastic conduit in house town and country construction industry reaches 40,000,000 tons or so.Develop in " 13 " In planning, plastic conduit is even more to be listed in the product widelyd popularize.Therefore plastic conduit has preferable development prospect in China.
In terms of plastics are widely used in pipeline transportation and corrosion-resistant container as a kind of corrosion-resistant new material, but plastics And will not non-fully it corrode.The corrosion failure of one of dominant failure mode during metal material use is same in plastic applications Sample exists, and in the collective effect of complex environment and conveying medium, plastic conduit and container also can be broken by the long-term corrosion of medium It is bad to fail in turn.The etch state of plastics has a larger difference relative to metal material, and common etch state exists in metal It there's almost no in nonmetallic materials.Therefore, the corrosion mechanism of plastics is also relatively easy.In material and environmental selection reasonable design Under conditions of, the corrosion of plastics is broadly divided into physics corrosion and chemical attack two major classes.
Physics corrosion is plastic tube is made plastic components surface molecular loosen by the effect of medium molecule in the medium, principle It is that gradual loosen of surface macromolecular that medium molecule is in direct contact leaves plastic components surface and enter medium, finally makes plastic section Part surface loosens, thickness reduces, and from the superficial to the deep, the intensity of plastic components continuously decreases this process, until plastic components fails. Physics corrosion process generally can be divided into two stages progress.First stage:Plastics are in the medium by medium temperature or pressure etc. After the effect of factor, media fraction molecule, which becomes active, simultaneously " attacks " frosting macromolecular gap, makes the macromolecular chain of plastics Section loosens, and the swelling of frosting is presented.Second stage:Under " attack " of medium molecule, the macromolecular of frosting is forced " pulling down " enters medium, completes corrosion process.Physics corrosion not mechanically makes frosting macromolecular be detached from modeling in layer Material itself enters medium, also related with the order degree of the molecule arranging structure of plastics, while being also possible to along with chemistry The process of corrosion.
Chemical attack is under the action of medium molecule, and the macromolecular structure of plastics is destroyed or chemically reactive, is generated Other substances enter medium and the physics of plastic products and chemical property and mechanical property are caused to change, such as intensity drop The low, service life, which reduces, even fails, and chemical attack is mainly shown as weightless, discoloration, oxidation and decomposes.Chemical attack is most representative Be substitution reaction, in plastic material molecular structure the effect of functional pendant groups receptor 1 activity medium occur oxidation, nitrification, chlorination, The substitution reactions such as sulfonation cause material corrosion resistance to decline, and the mechanical property of material is deteriorated.In addition it is crosslinked between plastic molecules anti- Material embrittlement, hardening should be also resulted in.
A kind of important failure mode of the corrosion failure as plastics, but the basic data of its correlative study is less, for modeling The experimental method of the materials and parts immersion corrosion of resistance to different medium and experimental provision are incomplete.Plastics immersion corrosion experimental applications are more wide General is the bioassay standard of GB/T 11547-2008 plastics-resistant to liquid chemical reagent performance.This standard impregnates plastic corrosion-resisting The ruler of test solution type needed for experiment and dosage, soaking time and temperature, specimen types, experimental procedure and the front and back sample of experiment Very little, quality and volume have made detailed regulation, and recommend the experimental provision of immersion corrosion experiment.
Existing experimental provision includes having graduated capillary and two the glass spherical containers, two the glass spherical containers It is respectively at the both ends of capillary.In use, sample is put into one of the glass spherical container, in another glass marble container It is put into medium solution;Experimental provision is placed vertically and is read this moment vertical;Medium solution enters dress when being inverted experimental provision The glass spherical container for having sample, is impregnated;Experimental provision is erect again after after a time, records the quarter of medium solution Degree variation.Although this experimental provision can accurately measure solution variation, there is also problems with:(1) each experimental provision is every Secondary experiment can only place a sample, cannot meet the requirement of experiment of multiple parallel samples under same experiment condition;(2) cannot expire The experiment of sufficient multicycle then needs a large amount of similar device, according to GB/T11547- to multicycle and more Duplicate Samples immersion tests The requirement of 2008 standards, primary experiment need 7 experimental periods, and a cycle needs 5 Duplicate Samples, need 35 this experiment dresses It sets, if to investigate the soak test of multiple material, plurality of liquid medium, leads to that entire pilot system is very huge, bad control System and management;(3) corrosive medium is replaced to be more troublesome;(4) midway sampling process is cumbersome, and there are larger safety winds when sampling Danger;(5) liquid to be tested is in static state, cannot reflect the erosion performance to material in dynamic process.
Utility model content
The purpose of this utility model is to provide one kind can be unfolded simultaneously various, more materials, constant temperature, the multicycle, stream The material corrosion experiment of dynamic state, and low energy consumption, easy to operate, the convenient plastics resistance to liquid energy scale experiment dress of expansion It sets.
Technical solution adopted in the utility model is:
A kind of plastics resistance to liquid energy scale experimental provision, including accommodating groove and rack for test tube, accommodating groove have corrosion chamber With constant temperature chamber, corrosion chamber is in an intermediate position, constant temperature chamber around corrosion chamber, corrode between chamber and constant temperature chamber have it is thermally conductive every Plate, constant temperature intracavitary are equipped with constant temperature system and can stir the circulatory system of water, and rack for test tube is installed to corrosion intracavitary, has on rack for test tube The upper end of the coupon for having several groups circular hole and being placed in circular hole, coupon is equipped with coupon lid, and coupon lid has several There are several perforation, the height of each coupon lid to be below the height of corrosion chamber, the bottom of accommodating groove for the lower end of perforation, coupon Agitating device is equipped between the lower end of rack for test tube.
As the improvement of said program, agitating device is stirring blade, and accommodating groove is equipped with holder, and holder is equipped with electricity Machine, motor are connected to stirring blade by shaft.
As the improvement of said program, rack for test tube is cylindrical shape, and there are two the gears for being in different height for rack for test tube inside tool Plate, the baffle that several coupons resist lower section after the baffle of top realize that fixation, shaft are connected to stirring across two baffles Blade is set in the bottom side of the wall of rack for test tube there are two liquid flow ports, and the spacing of two liquid flow ports is more than 90 °.
As the improvement of said program, constant temperature system includes temperature sensor and heating element, temperature sensor and heating Element is electrically connected with temperature controller, and the side wall of accommodating groove is equipped with plate supporting frame, and the circulatory system includes water circulating pump, circulation water inlet pipe And recycling outlet, circulation water inlet pipe and recycling outlet extend from water circulating pump, circulation water inlet pipe and recycling outlet One end is respectively at the different position of constant temperature intracavitary, and water circulating pump and temperature controller are both placed on plate supporting frame.
As the improvement of said program, accommodating groove include be barrel-shaped thermostat and etching tank, the diameter of etching tank Less than thermostat etching tank is put into thermostat, the height of thermostat is less than etching tank.
The beneficial effects of the utility model:This plastics resistance to liquid energy scale experimental provision can be new material research and answer It is convenient to be provided with exploitation, and rack for test tube can place multiple coupons, and etchant solution medium to be measured flows into several coupons, constant temperature Chamber can make etchant solution medium to be measured keep constant temperature, the start and stop of agitating device that can influence etchant solution to be measured around corrosion chamber The flow regime of medium, the experimental provision is not only small, but also includes various control structure, can make full use of control variate method It is tested;Application scheme can investigate the liquid immersion corrosion test method of different materials simultaneously on this basis, investigate temperature Degree, the influence of etchant solution medium, time and flow regime to be measured to changes in material properties, this is to new material exploitation, engineering plastic Expect that equipment development is extremely important.
Description of the drawings
The utility model is described in further detail below in conjunction with the accompanying drawings:
Fig. 1 is the stereogram of experimental provision;
Fig. 2 is the schematic diagram at rack for test tube position;
Fig. 3 is the sectional view of experimental provision;
Fig. 4 is the vertical view of experimental provision.
Specific implementation mode
Referring to Fig.1~4, the utility model be a kind of plastics resistance to liquid energy scale experimental provision, including accommodating groove and Rack for test tube 3, accommodating groove have corrosion chamber and constant temperature chamber, and corrosion chamber is in an intermediate position, constant temperature chamber around corrosion chamber, corrosion chamber and There is thermally conductive partition board between constant temperature chamber, in the present embodiment, accommodating groove include be barrel-shaped thermostat 1 and etching tank 2, The diameter of etching tank 2 enables etching tank 2 to be put into thermostat 1 less than thermostat 1, and the height of thermostat 1 is less than etching tank 2 So that water in thermostat 1 will not unexpected runner etching tank 2, the side wall energy heat conduction of etching tank 2.This combination structure Simply, it is convenient to when correspondingly assembling.
Constant temperature intracavitary is equipped with constant temperature system 52 and can stir the circulatory system 51 of water.The circulatory system 51 includes recirculated water Pump, circulation water inlet pipe and recycling outlet, circulation water inlet pipe and recycling outlet extend from water circulating pump, circulation water inlet pipe and One end of recycling outlet, which is respectively at the different position of constant temperature intracavitary, makes water form flow regime, makes the water temperature of corrosion chamber surrounding Unanimously;Such as circulation water inlet pipe is in the bottom end on the left of constant temperature chamber, recycling outlet is in the upper end on the right side of constant temperature chamber.Constant temperature System 52 includes temperature sensor and heating element, and temperature sensor and heating element are in constant temperature intracavitary, temperature sensor The same temperature controller is electrically connected with heating element, temperature controller is used for monitoring and regulation bath temperature.Entire constant temperature system 52 Interior cycle is formed with the circulatory system 51, experimental provision is made to be relatively independent of the external world, avoids extraneous interference that from capable of preferably controlling change Amount.Heating element uses heating wire herein.
Rack for test tube 3 is installed to corrosion intracavitary, with several groups circular hole and the coupon 31 being placed in circular hole on rack for test tube 3, The upper end of coupon 31 is equipped with coupon lid 32, and coupon lid 32 is perforated with several, and the lower end of coupon 31 is with several Perforation, to form convection current;The height that the height of each coupon lid 32 is below corrosion chamber enables corrosive liquid medium to be measured It is enough easily to flow into coupon 31.It is equipped with agitating device 44 between the bottom and the lower end of rack for test tube 3 of accommodating groove, is waited for for increasing Survey the mobility of corrosive liquid medium.Specifically, agitating device 44 is stirring blade, and accommodating groove is equipped with holder 41, holder 41 It is equipped with motor 42, motor 42 is connected to stirring blade by shaft 43;Holder 41 is U-shape, and the both ends of holder 41, which have, to be lacked Mouthful, then notch is just caught in the side wall for being connected to thermostat 1.
As preferred embodiment, rack for test tube 3 is cylindrical shape, and there are two be in different height for 3 inside tool of rack for test tube The stepped hole of different-diameter is arranged in the inside of cylinder in baffle 33, the present embodiment, and two baffles 33 are placed in different height It at the shaft shoulder, of courses, the baffle 33 and cylinder of lower section can also be integrally formed;This frame mode is also so that experiment Device manufacturing is convenient.The rounded array distribution centered on shaft 43 of several coupons 31, several coupons 31 pass through top The baffle 33 that lower section is resisted after baffle 33 realizes fixation.Shaft 43 is then to be connected to stirring blade across two baffles 33, is turned simultaneously Axis 43 and the baffle 33 of lower section are clamped, and play the role of slinging agitating device 44.Liquid there are two being set in the bottom side of the wall of rack for test tube 3 The spacing of body flow ports 34, two liquid flow ports 34 is more than 90 °;Corrosive liquid medium to be measured is thrown to outside when stirring blade rotates Week, corrosive liquid medium to be measured are turned back again from the outflow of liquid flow ports 34 to the position of coupon lid 32, and corruption to be measured is so constituted Lose liquid medium flow state.
As preferred embodiment, the side wall of accommodating groove, the i.e. side wall of thermostat 1 are equipped with plate supporting frame 6, recirculated water Pump and temperature controller are both placed on the plate supporting frame 6.
A kind of plastics resistance to liquid energy scale experimental method is included the following steps using above-mentioned experimental provision:
A, it made by test requirements document, mark multigroup sample and coupon 31, then sample is put into coupon 31, finally covers Coupon lid 32 is simultaneously
Coupon 31 is put into rack for test tube 3;
B, corrosive liquid medium to be measured and sample frame are put into corrosion chamber, isothermal liquid is added to constant temperature intracavitary;
C, the working condition for adjusting water circulating pump, temperature sensor and motor 42, samples as required until off-test.
Motor 42 can be separately turned on or stopped in step c, realize the influence for investigating corrosive liquid medium to be measured to sample.Separately A kind of test method is, in step c can midway repeatedly stop motor 42 and complete midway sampling, and clear up sample in time, it is most laggard Row material properties test so realizes multicycle test requirements document.After this device and method, test efficiency can be greatly It improves.The present embodiment can be provided with eight coupons 31, be adjusted by the hole bit quantity on baffle 33;In one coupon 31 40 or so samples can be once packed into.
This plastics resistance to liquid energy scale experimental provision and method can provide conveniently for new material research and application and development, Test efficiency and uniformity is greatly improved compared with conventional method.Rack for test tube 3 can place multiple coupons 31, and corrosion to be measured is molten Liquid medium flows into several coupons 31, and constant temperature chamber can make etchant solution medium to be measured keep constant temperature, stirring around corrosion chamber The start and stop of device 44 can influence the flow regime of etchant solution medium to be measured, and the experimental provision is not only small, but also includes Various control structure can make full use of control variate method to be tested;Application scheme can investigate difference simultaneously on this basis The liquid immersion corrosion test method of material investigates temperature, etchant solution medium, time and flow regime to be measured to material property The influence of variation, this develops new material, engineering plastics equipment development is extremely important.
Certainly, the design creation is not limited to the above embodiment, and the combination of the various embodiments described above different characteristic also may be used To reach good effect.Those skilled in the art can also make without departing from the spirit of the present invention It with deformation or replaces, these equivalent modifications or replacement are all contained in the application claim limited range.

Claims (5)

1. a kind of plastics resistance to liquid energy scale experimental provision, it is characterised in that:Including accommodating groove and rack for test tube, the storage Slot has corrosion chamber and constant temperature chamber, and corrosion chamber is in an intermediate position, and the constant temperature chamber is around corrosion chamber, the corrosion chamber and constant temperature There is thermally conductive partition board, the constant temperature intracavitary to be equipped with constant temperature system and can stir the circulatory system of water, the examination between chamber Pipe support is installed to corrosion intracavitary, the coupon for having several groups circular hole on the rack for test tube and being placed in circular hole, the coupon Upper end be equipped with coupon lid, the coupon lid has several perforation, and the lower end of the coupon is with several perforation, respectively The height of the coupon lid is below the height of corrosion chamber, is equipped with and stirs between the bottom of the accommodating groove and the lower end of rack for test tube Mix device.
2. plastics resistance to liquid energy scale experimental provision according to claim 1, it is characterised in that:The agitating device For stirring blade, the accommodating groove is equipped with holder, and the holder is equipped with motor, and the motor is connected to stirring by shaft Blade.
3. plastics resistance to liquid energy scale experimental provision according to claim 2, it is characterised in that:The rack for test tube is Cylindrical shape, there are two the baffle for being in different height, several coupons to be supported after the baffle of top for rack for test tube inside tool The baffle for the side of staying, which is realized, to be fixed, and shaft is connected to stirring blade across two baffles, and the bottom side of the wall of the rack for test tube is equipped with The spacing of two liquid flow ports, the two liquid flow ports is more than 90 °.
4. plastics resistance to liquid energy scale experimental provision described in any one of claim 1 to 3, it is characterised in that: The constant temperature system includes temperature sensor and heating element, and the temperature sensor and heating element are electrically connected with temperature control Device, the circulatory system include water circulating pump, circulation water inlet pipe and recycling outlet, and circulation water inlet pipe and recycling outlet are from following Ring water pump extends, and one end of circulation water inlet pipe and recycling outlet is respectively at the different position of constant temperature intracavitary, the storage The side wall of slot is equipped with plate supporting frame, and the water circulating pump and temperature controller are both placed on plate supporting frame.
5. plastics resistance to liquid energy scale experimental provision according to claim 4, it is characterised in that:The accommodating groove packet It is barrel-shaped thermostat and etching tank to include, and the diameter of the etching tank enables etching tank to be put into constant temperature less than thermostat In slot, the height of the thermostat is less than etching tank.
CN201820115793.5U 2018-01-23 2018-01-23 A kind of plastics resistance to liquid energy scale experimental provision Withdrawn - After Issue CN207964575U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108037066A (en) * 2018-01-23 2018-05-15 广州特种承压设备检测研究院 A kind of plastics resistance to liquid energy scale experimental provision and method
CN109540626A (en) * 2018-12-25 2019-03-29 福建师范大学 A kind of research device produced in water body, separate micro- plastics

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108037066A (en) * 2018-01-23 2018-05-15 广州特种承压设备检测研究院 A kind of plastics resistance to liquid energy scale experimental provision and method
CN108037066B (en) * 2018-01-23 2024-07-02 广州特种设备检测研究院(广州市特种设备事故调查技术中心、广州市电梯安全运行监控中心) Large-scale experiment device and method for liquid resistance of plastic
CN109540626A (en) * 2018-12-25 2019-03-29 福建师范大学 A kind of research device produced in water body, separate micro- plastics
CN109540626B (en) * 2018-12-25 2021-05-28 福建师范大学 Research device for preparing and separating micro-plastic in water body

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Effective date of registration: 20240612

Address after: 510663 No.9, Keke Road, Huangpu District, Guangzhou City, Guangdong Province

Patentee after: Guangzhou Special Equipment Testing and Research Institute (Guangzhou Special Equipment Accident Investigation Technology Center Guangzhou Elevator Safety Operation Monitoring Center)

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Address before: 510663 No.9, Keke Road, Science City, Huangpu District, Guangzhou City, Guangdong Province

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