CN203396685U - Constant load tensile testing device under normal temperature and pressure hydrogen sulfide environment - Google Patents
Constant load tensile testing device under normal temperature and pressure hydrogen sulfide environment Download PDFInfo
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- CN203396685U CN203396685U CN201320407064.4U CN201320407064U CN203396685U CN 203396685 U CN203396685 U CN 203396685U CN 201320407064 U CN201320407064 U CN 201320407064U CN 203396685 U CN203396685 U CN 203396685U
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Abstract
The utility model discloses a constant load tensile testing device under a normal temperature and pressure hydrogen sulfide environment, and belongs to the field of metal material tensile testing. The testing device comprises at least one organic glass testing container, an air inlet device, an exhaust device, pressing plate components, a sample clamp, related pipelines and related valves, wherein the organic glass testing container is connected with the air inlet device and the exhaust device through the related pipelines and the related valves; the air inlet device and the exhaust device are connected with external equipment through the related pipelines and the related valves; the upper part and the lower part of the organic glass testing container are provided with the pressing plate components. Through experimental simulation, the tests, the rules, the mechanism research and the sensitivity of a H2S-containing acidic oil and gas field ground facility material, welding joint sulfide stress corrosion (SSC) cracking resistance and stress corrosion cracking (SCC) are comprehensively evaluated. The constant load tensile testing device is convenient and fast to machine and mount, has high safety and strong practicability and is economic and practical.
Description
Technical field
The utility model relates to material during tensile field tests, particularly constant load extension test experimental provision under a kind of normal temperature and pressure hydrogen-sulfide environmental.
Background technology
Sulfuretted hydrogen (H
2s) be a kind of mineral compound, sulfuretted hydrogen is present among crude oil, rock gas, volcanic gas and hot spring naturally.Constant load is to be applied to constant in engineering structure (or its variation is compared negligible with mean value) load.
Along with domestic and international sulfide hydrogen (H
2s) deep development in acid-soluble oil gas field, H
2the Cracking Failure problem of the pipeline that S causes and equipment becomes increasingly conspicuous, and constant load stretching experiment is test metal material and welding joint resisting sulfide stress corrosion crack (SSC) and stress corrosion crack (SCC) performance, study its corrosion cracking behavior and mechanism indispensable experimental technique and means.
In realizing process of the present utility model, inventor finds that prior art at least exists following problem:
Due to H
2stretching experiment under S environment is high for security requirement, so the sealing of experimental provision, H
2s monitoring susceptibility etc. all becomes the safe and effective key factor of carrying out of restriction experiment test.
What constant load stress corrosion (cracking) test equipment of the prior art had can only be applicable to the constant load stress corrosion (cracking) test under High Temperature High Pressure, can not be completely for H
2s environment, and complex structure is huge; Though some testing machines are simple in structure, price is low, is only applicable to the non-bubble-tight air dielectric of normal temperature and pressure; Although it is large that some constant load loading equipemtns have overcome floor area, the defect that precision is low, for also very unripe containing constant load stretching experiment poisonous, hazardous medium, there is no at present specially for containing poisonous, hazardous medium H
2constant load tensile test device under S environment.
Summary of the invention
In order to solve the problem of prior art, the utility model embodiment provides constant load extension test experimental provision under a kind of normal temperature and pressure hydrogen-sulfide environmental.Be used for evaluating normal temperature and pressure H
2the sensitive property of metal material and welding joint resisting sulfide stress corrosion crack (SSC) and stress corrosion crack (SCC) under S environment, selects and welding technology to optimize the material of the defeated treatment facility of acid-soluble oil gas field collection; This experimental provision not Tensile sample joint form limits, and can realize the mensuration of real-time in-situ pH value, and applicability is strong.Described technical scheme is as follows:
A constant load extension test experimental provision under hydrogen-sulfide environmental, described experimental provision at least comprises: organic glass experiment container, admission gear, exhaust apparatus, Anchor plate kit, specimen holder and associated pipe, related valve; Described organic glass experiment container connects described admission gear, described exhaust apparatus by associated pipe, related valve, and described admission gear, described exhaust apparatus connect external equipment by associated pipe, related valve; The upper and lower of described organic glass experiment container is provided with described Anchor plate kit.
Particularly, described organic glass experiment container at least comprises: isometrical next door joint two, experiment container main body, isometrical next door joint one, fluororubber O-type O-ring seal one, fastening bolt three, nut three, experiment container upper cover; Described experiment container upper cover is connected in described experiment container main body end face by described fastening bolt three, described nut three, and is provided with described fluororubber O-type O-ring seal one sealing.
Particularly, described experiment container upper cover is provided with the threaded hole of center pit and both sides, sample or specimen holder are installed in center pit, isometrical next door joint one described in the threaded hole thread connection of one side, isometrical next door joint two described in the threaded hole thread connection of opposite side, and adopt the sealing of polytetrafluoro band; Described experiment container bottom part body is provided with center pit, concentric with the center pit of described experiment container upper cover.
Particularly, described admission gear at least comprises: gas-guide pipeline one, tee ball valve, gas-guide pipeline three, needle-valve, gas-guide pipeline two, gas-guide pipeline four, air inlet pipeline; Described tee ball valve connects respectively described gas-guide pipeline one, described gas-guide pipeline three, described gas-guide pipeline two by cutting ferrule, described gas-guide pipeline one connects the hydrogen cylinder of external equipment, described gas-guide pipeline two connects the sulfuretted hydrogen gas cylinder of external equipment, described gas-guide pipeline three is by connecting the air intake opening of needle-valve described in cutting ferrule, the gas outlet of described needle-valve connects described gas-guide pipeline four by cutting ferrule, and described gas-guide pipeline four is connected with the described isometrical next door joint one of described organic glass experiment container by cutting ferrule respectively with described air inlet pipeline.
Particularly, described exhaust apparatus at least comprises: two pass ball valves, gas-guide pipeline six, gas-guide pipeline five; Described gas-guide pipeline Wu one end connects the described isometrical next door joint two of described organic glass experiment container by cutting ferrule, the other end connects the air intake opening of described two pass ball valves by cutting ferrule, the gas outlet of described two pass ball valves connects described gas-guide pipeline six by cutting ferrule, and the exhaust end of described gas-guide pipeline six inserts and is equipped with in the absorption cell of 10% soda lye.
Particularly, described Anchor plate kit is used for installing sample, at least comprises: nut one, fastening bolt one, fluororubber O-type O-ring seal two, organic glass top board, organic glass lower platen, fluororubber O-type O-ring seal three, nut two, fastening bolt two; Described organic glass top board is connected on described experiment container and is covered by described fastening bolt one and described nut one, and is provided with described fluororubber O-type O-ring seal two; Described organic glass lower platen is connected in described experiment container main body bottom surface by described fastening bolt two, described nut two, and is provided with described fluororubber O-type O-ring seal three.
Particularly, described specimen holder is used for installing plate tensile sample, at least comprises: Hastelloy specimen holder one, polytetrafluoro pad one, Hastelloy pin one, Hastelloy pin two, polytetrafluoro pad two, Hastelloy specimen holder two; Described Hastelloy specimen holder one comprises bar portion, pedestal, and described base bottom is provided with a longitudinal opening groove and a horizontal pin-and-hole communicating with described open slot; Described Hastelloy specimen holder two structures are identical with described Hastelloy specimen holder one structure, are oppositely arranged.
Further, described sample is bar-shaped sample, and described bar-shaped sample top and the bottom are respectively through the center pit of described experiment container upper cover and the center pit of described experiment container main body.
Further, described sample is plate tensile sample, and described plate tensile sample is arranged on described organic glass experiment container by specimen holder.
Particularly, described plate tensile sample two ends are respectively provided with a through hole, insert respectively in described Hastelloy specimen holder one and the corresponding described open slot of described Hastelloy specimen holder two at described plate tensile sample two ends, by described Hastelloy pin one, described Hastelloy pin two, connect with described Hastelloy specimen holder one, described Hastelloy specimen holder two, and adopt polytetrafluoro band to be wound around pin insulation; Between described plate tensile sample and described Hastelloy specimen holder one, described Hastelloy specimen holder two, be provided with described polytetrafluoro pad one, described polytetrafluoro pad two insulation.
The beneficial effect that the technical scheme that the utility model embodiment provides is brought is:
By organic glass experiment container, admission gear, exhaust apparatus, Anchor plate kit and associated pipe, related valve etc., connect external equipment, sample is carried out to normal temperature and pressure H<sub TranNum="108">2</sub>constant load stretching experiment under S environment, can realize the mensuration of real-time in-situ pH value, and applicability is strong; Simulate by experiment the Cracking Failure behavior of Oil & gas field in sulfur field metal material and welding joint, can realize containing H<sub TranNum="109">2</sub>collection defeated treatment facility in S acid-soluble oil gas field carries out comprehensive evaluation by test, rule and mechanism research and the susceptibility of material and welding joint resisting sulfide stress corrosion crack (SSC) and stress corrosion crack (SCC), the material of acid oil gas field surface facility is selected and welding technology optimization and welding, and the theoretical research of corrosion cracking behavior, rule and mechanism is significant.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the utility model embodiment, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is that under the normal temperature and pressure hydrogen-sulfide environmental that provides of the utility model embodiment, constant load extension test experimental provision be take bar-shaped sample as example structural representation;
Fig. 2 is that under the normal temperature and pressure hydrogen-sulfide environmental that provides of the utility model embodiment, constant load extension test experimental provision be take plate tensile sample as example structural representation;
Fig. 3 a is the front view of the Hastelloy specimen holder structural representation of constant load extension test experimental provision under the normal temperature and pressure hydrogen-sulfide environmental that provides of the utility model embodiment;
Fig. 3 b is the left view of the Hastelloy specimen holder structural representation of constant load extension test experimental provision under the normal temperature and pressure hydrogen-sulfide environmental that provides of the utility model embodiment;
Fig. 3 c is the plate tensile sample structural representation of constant load extension test experimental provision under the normal temperature and pressure hydrogen-sulfide environmental that provides of the utility model embodiment.
In figure, each symbol represents that implication is as follows:
A organic glass experiment container, 16 isometrical next door joint two, 22 experiment container main bodys, 24 isometrical next door joint one, 25 fluororubber O-type O-ring seal one, 26 fastening bolt three, 28 nut three, 29 experiment container upper covers;
B admission gear, 2 gas-guide pipeline one, 3 tee ball valves, 4 gas-guide pipeline three, 5 needle-valves, 6 gas-guide pipeline two, 7 gas-guide pipeline four, 23 air inlet pipelines;
C exhaust apparatus, 13 liang of pass ball valves, 14 gas-guide pipeline six, 15 gas-guide pipelines five;
D Anchor plate kit, 8 nut one, 9 fastening bolt one, 10 fluororubber O-type O-ring seal two, 12 organic glass top boards, 18 organic glass lower platens, 19 fluororubber O-type O-ring seal three, 20 nut two, 21 fastening bolts two;
E external equipment, 1 nitrogen cylinder, 17 absorption cells, 27 sulfuretted hydrogen gas cylinders;
F sample, 11 bar-shaped samples, 33 plate tensile samples;
G specimen holder, 30 Hastelloy specimen holder one, 31 polytetrafluoro pad one, 32 Hastelloy pin one, 34 Hastelloy pin two, 35 polytetrafluoro pad two, 36 Hastelloy specimen holders two.
The figure hollow core direction of arrow is admission gear B air-flow working direction; Filled arrows direction is exhaust apparatus C air-flow working direction.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing, the utility model embodiment is described in further detail.
Shown in Figure 1, the utility model embodiment provides constant load extension test experimental provision under a kind of normal temperature and pressure hydrogen-sulfide environmental, in order to carry out normal temperature and pressure H
2constant load stretching experiment under S environment, evaluate the defeated treatment facility of sulfuric acid oil gas field collection material and welding joint resisting sulfide stress corrosion crack (SSC) and stress corrosion crack (SCC) performance, and extension test and the port analysis sample of bar-shaped sample and plate tensile sample are provided.Described experimental provision at least comprises: organic glass experiment container A, admission gear B, exhaust apparatus C, Anchor plate kit D, and associated pipe, related valve, external equipment E, sample F, specimen holder G etc.; Described sample F can be bar-shaped sample 11 or plate tensile sample 33, and the bar-shaped sample 11 of take is example; Particularly, described organic glass experiment container A connects admission gear B, exhaust apparatus C by associated pipe, related valve, and described admission gear B, exhaust apparatus C connect external equipment E by associated pipe, related valve; The upper and lower of described organic glass experiment container A is provided with Anchor plate kit D, and described Anchor plate kit D is in order to install sample F.This experimental provision is applicable to poisonous, hazardous medium H
2constant load extension test under S environment.
Particularly, described organic glass experiment container A at least comprises: isometrical next door joint 2 16, experiment container main body 22, isometrical next door joint 1, fluororubber O-type O-ring seal 1, fastening bolt 3 26, nut 3 28, experiment container upper cover 29 etc.; Described experiment container main body 22 is an open-top receptacle; upper edge arranges connecting flange; and is furnished with experiment container upper cover 29; eight fastening bolts 3 26 are through connecting flange and experiment container upper cover 29; by nut 3 28, experiment container upper cover 29 is connected in to experiment container main body 22 end faces, and by being arranged on the fluororubber O-type O-ring seal 1 in groove above connecting flange, realizes the sealing of organic glass experiment container A; The volume of described organic glass test chamber A is 200-300ml, and operating temperature range is 0-70 ℃.
On described experiment container upper cover 29, be provided with the threaded hole of center pit and both sides, center pit is used for installing bar-shaped sample 11, the threaded hole of one side is for the isometrical next door of thread connection joint 1, the threaded hole of opposite side is for the isometrical next door of thread connection joint 2 16, and adopt polytetrafluoro band to seal, at least be wound around two circles, guarantee the sealing of experimental provision; Described experiment container main body 22 bottoms are provided with center pit, concentric with the center pit of experiment container upper cover 29, conscientiously guarantee both right alignmenies, for bar-shaped sample 11 is installed, avoid occurring sample F assembling deviation.
Particularly, described external equipment E at least comprises: nitrogen cylinder 1, absorption cell 17, sulfuretted hydrogen gas cylinder 27 etc.; Be prior art, buyable.
Particularly, described admission gear B at least comprises: gas-guide pipeline 1, tee ball valve 3, gas-guide pipeline 34, needle-valve 5, gas-guide pipeline 26, gas-guide pipeline 47, air inlet pipeline 23 etc.; Described tee ball valve 3 connects respectively gas-guide pipeline 1, gas-guide pipeline 34, gas-guide pipeline 26 by cutting ferrule, described gas-guide pipeline 1 connects the hydrogen cylinder 1 of external equipment E, described gas-guide pipeline 26 connects the sulfuretted hydrogen gas cylinder 27 of external equipment E, described gas-guide pipeline 34 connects the air intake opening of needle-valve 5 by cutting ferrule, the gas outlet of needle-valve 5 connects gas-guide pipeline 47 by cutting ferrule, and described gas-guide pipeline 47 is connected with the described isometrical next door joint 1 of described organic glass experiment container A by cutting ferrule respectively with air inlet pipeline 23; Described admission gear B realizes and organic glass experiment container A conducting by isometrical next door joint 1, by tee ball valve 3, effectively controls the N in nitrogen cylinder 1
2with the H in sulfuretted hydrogen gas cylinder 27
2s gas passes into and closes, and by needle-valve 5, regulates the size of charge flow rate.The gas-guide pipeline 1 of described admission gear B, gas-guide pipeline 34, gas-guide pipeline 26, gas-guide pipeline 47 are selected 316L material stainless-steel tube, and described air inlet pipeline 23 is selected Hastelloy material pipe.
Particularly, described exhaust apparatus C at least comprises: two pass ball valves 13, gas-guide pipeline 6 14, gas-guide pipeline 5 15 etc.; Described gas-guide pipeline Wu15 one end connects the isometrical next door joint 2 16 of organic glass experiment container A by cutting ferrule, the other end connects the air intake opening of two pass ball valves 13 by cutting ferrule, two pass ball valve 13 gas outlets connect gas-guide pipeline 6 14 by cutting ferrule, the exhaust end of gas-guide pipeline 6 14 inserts and is equipped with in the absorption cell 17 of 10% soda lye, and absorption cell 17 fully absorbs the H giving off
2s gas, realizes and continues discharge H
2the absorption of S; Described exhaust apparatus C realizes and organic glass experiment container A conducting by isometrical next door joint 2 16, by two pass ball valves 13, controls organic glass experiment container A and absorption cell 17 conductings, in order to gas discharging and experimental provision impermeability, detects.The gas-guide pipeline 6 14 of described exhaust apparatus C, gas-guide pipeline 5 15 are selected 316L material stainless-steel tube.
Described cutting ferrule is exactly ferrule-type compression joint, is prior art, buyable.During installation, stainless steel pipeline is inserted in cutting ferrule, utilize cutting ferrule nut lock conflict cutting ferrule, cutting ferrule inner edge is cut weldless steel tube equably, forms effective sealing.
Particularly, described Anchor plate kit D at least comprises: nut 1, fastening bolt 1, fluororubber O-type O-ring seal 2 10, organic glass top board 12, organic glass lower platen 18, fluororubber O-type O-ring seal 3 19, nut 2 20, fastening bolt 2 21 etc.; Described organic glass top board 12 is connected in experiment container upper cover 29 tops by four fastening bolts 1 and nut 1; Described organic glass lower platen 18 is connected in experiment container main body 22 bottoms by four fastening bolts 2 21, nut 2 20; Described bar-shaped sample 11 top and the bottom are respectively through the center pit of experiment container upper cover 29 and the center pit of experiment container main body 22, and be respectively arranged with fluororubber O-type O-ring seal Er10, bottom, top fluororubber O-type O-ring seal 3 19, by organic glass top board 12, organic glass lower platen 18, clamp; Described fluororubber O-type O-ring seal 2 10 is in order to the sealing between organic glass top board 12, bar-shaped sample 11, experiment container upper cover 29; Described fluororubber O-type O-ring seal 3 19 is in order to the sealing between organic glass lower platen 18, bar-shaped sample 11, experiment container main body 22 bottoms.
Referring to shown in Fig. 2, Fig. 3 a, b, c, take plate tensile sample 33 as example simultaneously, by specimen holder G, plate tensile sample 33 is arranged on organic glass experiment container A; Particularly, described specimen holder G at least comprises: Hastelloy specimen holder 1, polytetrafluoro pad 1, Hastelloy pin 1, Hastelloy pin 2 34, polytetrafluoro pad 2 35, Hastelloy specimen holder 2 36 etc.; Described Hastelloy specimen holder 1 forms diameter-changing body by the 30a of bar portion and pedestal 30b, and the 30a of bar portion is provided with external thread, and pedestal 30b bottom is provided with a longitudinal opening groove 30c and a horizontal pin-and-hole 30d who communicates with open slot 30c; Described Hastelloy specimen holder 2 36 structures are identical with Hastelloy specimen holder one 30 structures, and two fixtures are oppositely arranged.
Described plate tensile sample 33 two ends are respectively provided with a through hole 33a, insert respectively in Hastelloy specimen holder 1 and the corresponding open slot 30c of Hastelloy specimen holder 2 36 at plate tensile sample 33 two ends, and respectively by Hastelloy pin 1, Hastelloy pin 2 34 and Hastelloy specimen holder 1, Hastelloy specimen holder 2 36 connects, adopt polytetrafluoro band to be wound around pin simultaneously, at least be wound around two circles, in order to Hastelloy pin 1, Hastelloy pin 2 34 and plate tensile sample 33 and Hastelloy specimen holder 1, insulation between Hastelloy specimen holder 2 36, guarantee the sealing of experimental provision, between described plate tensile sample 33 and Hastelloy specimen holder 1, Hastelloy specimen holder 2 36, be provided with polytetrafluoro pad 1, polytetrafluoro pad 2 35, in order to the insulation between plate tensile sample 33 and Hastelloy specimen holder 1, Hastelloy specimen holder 2 36, avoid occurring bimetallic corrosion, affect test result.
Described fluororubber O-type O-ring seal 2 10 is in order to top board 12, the Hastelloy specimen holder 1 that plate tensile sample 33 is housed, the sealing between experiment container upper cover 29; Described fluororubber O-type O-ring seal 3 19 is in order to the sealing between lower platen 18, the Hastelloy specimen holder 2 36 that plate tensile sample 33 is housed, experiment container main body 22 bottoms.
The using method of the utility model embodiment:
Open experiment container upper cover 29, isometrical next door joint 1, draft tube 23 and isometrical next door joint 2 16 are arranged on experiment container upper cover 29.By bar-shaped sample 11 or installed the Hastelloy specimen holder 2 36 of plate tensile sample 33 through the center pit of experiment container main body 22 bottoms, and bar-shaped sample 11 or Hastelloy specimen holder 2 36 are adjusted to correct position.Fluororubber O-type O-ring seal 3 19 is arranged in the groove of experiment container main body 22 bottoms along bar-shaped sample 11 or specimen holder 2 36, then with four fastening bolts 2 21, organic glass lower platen 18 is tentatively fixed on to the bottom of experiment container main body 22.Experiment container upper cover 29 is through bar-shaped sample 11 or the Hastelloy specimen holder 1 of plate tensile sample 33 has been installed, fixing with experiment container main body 22 by it with eight fastening bolts 3 26, compress one 25 realizations of fluororubber O-type O-ring seal and seal.Adjust bar-shaped sample 11 or Hastelloy specimen holder 1 to correct position, with four fastening bolts 1, organic glass top board 12 is fixed on to experiment container upper cover 29, and organic glass lower platen 18 is finally fixed on to the bottom of experiment container main body 22, by compressing fluororubber O-type O-ring seal 3 19, realize sealing, sample is fixed.
Gas-guide pipeline 47 is connected to needle-valve 5 and next door joint 1, gas-guide pipeline 34 connecting tee ball valves 3 and needle-valve 5, gas-guide pipeline 5 15 connects two pass ball valves 13 and isometrical next door joint 2 16, gas-guide pipeline 6 14 connects two pass ball valves 13 and absorption cells 17, then with gas-guide pipeline 1 and gas-guide pipeline 26, realizes being connected of external nitrogen cylinder 1 and external sulfuretted hydrogen gas cylinder 27 and tee ball valve 3 respectively.
Adopt nitrogen (N
2) experimental provision is hunted leak, if find gas leak phenomenon, drain-source is carried out fastening and adjusted; If impermeability is good, experimental provision is fixed on the constant load stretching device matching.Gas-guide pipeline 5 15 is connected to joint Er16 one end, isometrical next door and unload, with syringe, by the experimental solutions injection experiments container after appropriate deoxygenation, reconnected gas-guide pipeline 5 15 and isometrical next door joint 2 16.Reuse N
2carry out impermeability detection, without leakage phenomenon, start the front every liter of high-purity N that solution will be 100ml/min with flow velocity of experiment
2carry out deoxygenation and be no less than 1 hour, then passing into H
2s gas, and metering pin valve 5 is controlled H
2s gas flow is loaded on experimental design stress simultaneously, and experiment starts timing.After experiment finishes, close sulfuretted hydrogen gas cylinder 27, continue to pass into N simultaneously
2by the H in whole experimental provision
2the emptying of S gas, and use portable H
2the check of S detection instrument is without H
2after S, carry out sample dismounting.
In addition, the utility model embodiment also has advantages of:
1, can realize the mensuration of real-time in-situ pH value, as long as open air inlet connections, use syringe to extract appropriate solution out and measure.
2, do not need to use hermetic experimental situation, but carry out the sealed environment in realization response container by the mutual assembly of the accessory of device own, only need basic experiment guard chamber, be easy to observe, effectively solved that current constant load occupation area of equipment is large, experiments supporting container air-tightness is poor, security is low, cannot carry out poisonous, hazardous medium H
2constant load extension test under S environment, the restricted problem of test medium;
3, it is convenient that the container material quality using, pipeline, valve union are installed, and monitoring susceptibility is good, can realize optimum result of use, is applicable to multiple tensile sample.
4, material therefor market is easily purchased, and cost is controlled, is convenient to safeguard change, safe.
5, load mode is various, can well dock use with other constant load devices, easy and simple to handle; Not Tensile sample joint form restriction, economic serviceability is strong.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (10)
1. constant load extension test experimental provision under a normal temperature and pressure hydrogen-sulfide environmental, it is characterized in that, described experimental provision at least comprises: organic glass experiment container (A), admission gear (B), exhaust apparatus (C), Anchor plate kit (D), specimen holder (G) and associated pipe, related valve; Described organic glass experiment container (A) connects described admission gear (B), described exhaust apparatus (C) by associated pipe, related valve, and described admission gear (B), described exhaust apparatus (C) connect external equipment (E) by associated pipe, related valve; The upper and lower of described organic glass experiment container (A) is provided with described Anchor plate kit (D).
2. constant load extension test experimental provision under normal temperature and pressure hydrogen-sulfide environmental according to claim 1, it is characterized in that, described organic glass experiment container (A) at least comprises: isometrical next door joint two (16), experiment container main body (22), isometrical next door joint one (24), fluororubber O-type O-ring seal one (25), fastening bolt three (26), nut three (28), experiment container upper cover (29); Described experiment container upper cover (29) is connected in described experiment container main body (22) end face by described fastening bolt three (26), described nut three (28), and is provided with described fluororubber O-type O-ring seal one (25) sealing.
3. constant load extension test experimental provision under normal temperature and pressure hydrogen-sulfide environmental according to claim 2, it is characterized in that described experiment container upper cover (29) is provided with the threaded hole of center pit and both sides, sample (F) or specimen holder (G) are installed in center pit, isometrical next door joint one (24) described in the threaded hole thread connection of one side, isometrical next door joint two (16) described in the threaded hole thread connection of opposite side, and adopt the sealing of polytetrafluoro band; Described experiment container main body (22) bottom is provided with center pit, concentric with the center pit of described experiment container upper cover (29).
4. constant load extension test experimental provision under normal temperature and pressure hydrogen-sulfide environmental according to claim 1, it is characterized in that, described admission gear (B) at least comprises: gas-guide pipeline one (2), tee ball valve (3), gas-guide pipeline three (4), needle-valve (5), gas-guide pipeline two (6), gas-guide pipeline four (7), air inlet pipeline (23), described tee ball valve (3) connects respectively described gas-guide pipeline one (2) by cutting ferrule, described gas-guide pipeline three (4), described gas-guide pipeline two (6), described gas-guide pipeline one (2) connects the nitrogen cylinder (1) of external equipment (E), described gas-guide pipeline two (6) connects the sulfuretted hydrogen gas cylinder (27) of external equipment (E), described gas-guide pipeline three (4) connects the air intake opening of described needle-valve (5) by cutting ferrule, the gas outlet of described needle-valve (5) connects described gas-guide pipeline four (7) by cutting ferrule, described gas-guide pipeline four (7) is connected with the described isometrical next door joint one (24) of described organic glass experiment container (A) by cutting ferrule respectively with described air inlet pipeline (23).
5. constant load extension test experimental provision under normal temperature and pressure hydrogen-sulfide environmental according to claim 1, it is characterized in that, described exhaust apparatus (C) at least comprises: two pass ball valves (13), gas-guide pipeline six (14), gas-guide pipeline five (15); Described gas-guide pipeline five (15) one end connect the described isometrical next door joint two (16) of described organic glass experiment container (A) by cutting ferrule, the other end connects the air intake opening of described two pass ball valves (13) by cutting ferrule, the gas outlet of described two pass ball valves (13) connects described gas-guide pipeline six (14) by cutting ferrule, and the exhaust end of described gas-guide pipeline six (14) inserts and is equipped with in the absorption cell (17) of 10% soda lye.
6. constant load extension test experimental provision under normal temperature and pressure hydrogen-sulfide environmental according to claim 1, it is characterized in that, described Anchor plate kit (D), for sample (F) is installed, at least comprises: nut one (8), fastening bolt one (9), fluororubber O-type O-ring seal two (10), organic glass top board (12), organic glass lower platen (18), fluororubber O-type O-ring seal three (19), nut two (20), fastening bolt two (21); It is upper that described organic glass top board (12) is connected in described experiment container upper cover (29) by described fastening bolt one (9) and described nut one (8), and be provided with described fluororubber O-type O-ring seal two (10); Described organic glass lower platen (18) is connected in described experiment container main body (22) bottom surface by described fastening bolt two (21), described nut two (20), and is provided with described fluororubber O-type O-ring seal three (19).
7. constant load extension test experimental provision under normal temperature and pressure hydrogen-sulfide environmental according to claim 1, it is characterized in that, described specimen holder (G), for plate tensile sample (33) is installed, at least comprises: Hastelloy specimen holder one (30), polytetrafluoro pad one (31), Hastelloy pin one (32), Hastelloy pin two (34), polytetrafluoro pad two (35), Hastelloy specimen holder two (36); Described Hastelloy specimen holder one (30) comprises bar portion (30a), pedestal (30b), and described pedestal (30b) bottom is provided with a longitudinal opening groove (30c) and a horizontal pin-and-hole (30d) communicating with described open slot (30c); Described Hastelloy specimen holder two (36) structures are identical with described Hastelloy specimen holder one (30) structure, are oppositely arranged.
8. constant load extension test experimental provision under normal temperature and pressure hydrogen-sulfide environmental according to claim 6, it is characterized in that, described sample (F) is bar-shaped sample (11), and described bar-shaped sample (11) top and the bottom are respectively through the center pit of described experiment container upper cover (29) and the center pit of described experiment container main body (22).
9. constant load extension test experimental provision under normal temperature and pressure hydrogen-sulfide environmental according to claim 7, it is characterized in that, described sample (F) is plate tensile sample (33), and described plate tensile sample (33) is arranged on described organic glass experiment container (A) by specimen holder (G).
10. constant load extension test experimental provision under normal temperature and pressure hydrogen-sulfide environmental according to claim 9, it is characterized in that, described plate tensile sample (33) two ends are respectively provided with a through hole (33a), insert respectively in described Hastelloy specimen holder one (30) and the corresponding described open slot (30c) of described Hastelloy specimen holder two (36) at described plate tensile sample (33) two ends, by described Hastelloy pin one (32), described Hastelloy pin two (34) and described Hastelloy specimen holder one (30), described Hastelloy specimen holder two (36) connects, and adopt polytetrafluoro band to be wound around pin insulation, between described plate tensile sample (33) and described Hastelloy specimen holder one (30), described Hastelloy specimen holder two (36), be provided with described polytetrafluoro pad one (31), two (35) insulation of described polytetrafluoro pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN103868811A (en) * | 2014-03-13 | 2014-06-18 | 上海海隆石油钻具有限公司 | Hydrogen sulfide concentration control device for sulfide stress corrosion uniaxial tensile test |
| CN104280331A (en) * | 2013-07-09 | 2015-01-14 | 中国石油天然气集团公司 | Experiment apparatus for constant-load stretching tests in normal-temperature normal-pressure hydrogen sulfide environment |
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| CN104697873B (en) * | 2015-03-06 | 2017-08-25 | 合肥通用机械研究院 | A kind of sulfide-stress cracking experimental rig |
| CN104697873A (en) * | 2015-03-06 | 2015-06-10 | 合肥通用机械研究院 | Sulfide stress corrosion cracking testing apparatus |
| CN105388101A (en) * | 2015-12-02 | 2016-03-09 | 中国石油天然气集团公司 | Combined-loading stress corrosion testing apparatus and method |
| CN105388101B (en) * | 2015-12-02 | 2019-01-18 | 中国石油天然气集团公司 | A kind of Combined Loading stress corrosion testing device and method |
| CN107687975A (en) * | 2017-07-17 | 2018-02-13 | 中国石油天然气集团公司 | Evaluate the simulation test device and method of logging steel wire stress-corrosion-cracking resistance |
| CN107764729A (en) * | 2017-11-25 | 2018-03-06 | 江苏容大材料腐蚀检验有限公司 | A kind of hydrogen induced cracking (HIC) experimental provision |
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Granted publication date: 20140115 Effective date of abandoning: 20170405 |