CN202177565U - Sample clamp for high-temperature high-voltage kettle gas phase or liquid phase corrosion tests - Google Patents
Sample clamp for high-temperature high-voltage kettle gas phase or liquid phase corrosion tests Download PDFInfo
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- CN202177565U CN202177565U CN2011202695986U CN201120269598U CN202177565U CN 202177565 U CN202177565 U CN 202177565U CN 2011202695986 U CN2011202695986 U CN 2011202695986U CN 201120269598 U CN201120269598 U CN 201120269598U CN 202177565 U CN202177565 U CN 202177565U
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Abstract
A sample clamp for high-temperature high-voltage kettle gas phase or liquid phase corrosion tests comprises vertical sample rods, wherein sleeves are sleeved at the top ends of all the vertical sample rods. The sleeves are fixed through fastening screws and connected with each other through screws, and gas phase corrosion samples are suspended on the screws and need to be located above a liquid level line. The middle ends and the lower ends of the sample rods are immersed below the liquid level line, and liquid phase corrosion samples are suspended on the vertical sample rods immersed below the liquid level line. The gas phase corrosion samples are connected on the screws in rotary mode through bolts, the liquid phase corrosion samples are connected at two ends of the vertical sample rods in rotary mode also through bolts, and insulation gaskets are arranged between the bolts and the gas phase corrosion samples and between the bolts and the liquid phase corrosion samples. The sample clamp is simple in structure, safe, reliable, accurate in test data, capable of being used in sheet samples of oil well pipes with different pipe diameter specifications, free of packaging and coating and suitable for being used in the field of corrosion detection of the oil well pipes under oil well working condition simulation.
Description
Technical field
The utility model relates to a kind of test unit, relates in particular to a kind of dynamic high temperature autoclave gas phase or liquid phase corrosion specimen holder that is applied to estimate the detection corrosion of oil well pipe under the working condition of simulated oil gas field.
Background technology
At present, oil and natural gas iundustrial oil well casing often is in the working condition of dynamic liquid phase, gaseous fluid and high temperature, hyperbaric environment condition.And the testing equipment that adopts a kind of high temperature and high pressure kettle is usually corroded in the detection of such oil well pipe, estimate oil with pipe corrosive nature under this oil, gas field environmental baseline through simulated environment.
Test method under the prior art is that the corrosion sample of processing from oil well pipe is fixed on the sample mount, puts into the autoclave that simulated oil gas field solution is housed, in the corrosion test of carrying out the long period (being generally more than 10 days) under uniform temperature and the pressure.Generally speaking, existing autoclave gas phase need be separated separately during with the liquid phase test and carried out, when carrying out the liquid phase test with specimen mounting together with below the sample immersed in liquid level, carry out gas phase and specimen mounting placed more than the liquid level together with sample when testing.
Application number 200420036965.8, the Chinese patent of applying date 2004-06-30 discloses a kind of dynamic high-pressure still corrosion specimen holder; Comprise turning axle, sample and chuck, sample is fixed by chuck and is installed on the turning axle, and specimen shape is circular; The lean-in oblique angle α in the side of sample is 10～20 °; Side and inside surface at sample scribble silica gel, and the two ends of sample are provided with the sample boss, and the sample boss embeds in the chuck and with the medial surface of chuck one space arranged; Sample is the combination of one to three kind on independent use gas phase sample, gas-liquid phase sample, liquid phase sample; As carry out heterogeneous test, and in the gas phase bottom one baffle ring is set, in the bottom of anchor clamps one stirrer is set.
Though the anchor clamps of this patent can be used to carry out the corrosion test under gas phase, liquid phase, three kinds of conditions of gas-liquid phase simultaneously, these anchor clamps once can only be installed the ring specimen of specification steel pipe of the same race, and the ring specimen inside surface need apply with silica gel.Need long set time after silica gel applies, also must silica gel be cleaned out after the test, otherwise can bring certain influence, compare, on structure and embodiment, all have bigger different with the utility model to accuracy of experimental results.
A kind of to tackle the high temperature and high pressure kettle corrosion test cycle longer so press at present, can carry out liquid phase simultaneously, gaseous corrosion is test and novel specimen holder that do not need extra encapsulation and coating and can tackle the sample of all size size.
The utility model content
For the high temperature and high pressure kettle corrosion test cycle that solves under the prior art longer; And autoclave gas phase and liquid phase test are generally respectively to be carried out; Waste plenty of time, energy and supplies consumption, and sample encapsulation trouble are difficult to the problem that the sample of all size size is tested simultaneously; The utility model aims to provide a kind of novel corrosion specimen holder; These anchor clamps are applicable to the layer corrosion sample of various sizes, have can carry out liquid and gas corrosion test, sample simultaneously and do not need encapsulation, the processing of easy to install, sample simple, and owing to adopt the sheet sample; The oil well pipe of different tube diameters specification can make an experiment simultaneously, and the concrete structure of the utility model is described below:
A kind of specimen holder that is used for high temperature and high pressure kettle gas phase or liquid phase corrosion test comprises rectilinear sample bar, it is characterized in that:
The top of described rectilinear sample bar all is socketed with sleeve, adopts a screw rod to be connected between sleeve and the sleeve, and is hung with the gaseous corrosion sample on the screw rod, and this gaseous corrosion sample must be positioned at the top of liquid level line.
The middle-end of described rectilinear sample bar and lower end all are immersed in below the liquid level line, are immersed at this and are hung with liquid phase corrosion sample on rectilinear sample bar below liquid level line.
The purpose of design is here, adopts sample masthead end socket sleeve, between sleeve, connects with screw rod then; Make whole sample bar to form sample bar group according to the quantity of any adjusting sample of the quantity bar of the sample of required test, simple and convenient, and also screw rod adopts teflon processing; Can avoid the screw rod corrosion, prevent specimen surface is polluted, and have insulation effect simultaneously; The gaseous corrosion sample hangs on the screw rod and is positioned at the top of liquid level line, can carry out the gaseous corrosion test, and the middle-end of sample bar and lower end all is immersed in liquid level line; On the sample bar at this place, be hung with liquid phase corrosion sample; Promptly carried out the liquid phase corrosion test simultaneously, satisfy can carry out gas phase and liquid phase corrosion test simultaneously in, can hang the sheet sample of the oil well pipe of different tube diameters specification according to the test needs.
A kind of specimen holder that is used for high temperature and high pressure kettle gas phase or liquid phase corrosion test according to the utility model; It is characterized in that; Be hung with the gaseous corrosion sample on the described screw rod and be immersed in and be hung with liquid phase corrosion sample on the rectilinear sample bar below the liquid level line; It is specially; The gaseous corrosion sample is screwed on the screw rod through bolt, and liquid phase corrosion sample equally also is screwed in the two ends of rectilinear sample bar through bolt, and bolt and gaseous corrosion sample, liquid phase are corroded between the sample and be provided with insulation spacer.
The purpose of design is here, and the gaseous corrosion sample all adopts bolt to be screwed on screw rod or the vertical specimen mounting with liquid phase corrosion sample, is convenient for changing, observes and install; And this kind assembly method do not need to test encapsulation, and test processing is simple, in addition; Be provided with insulation spacer between bolt and gaseous corrosion sample, the liquid phase corrosion sample, this insulation spacer adopts teflon to process, and makes between sample and the bolt and insulate; And corrosion-resistant, process of the test is safe and reliable, and test figure is accurate.
Use a kind of specimen holder that is used for high temperature and high pressure kettle gas phase or liquid phase corrosion test of the utility model to obtain following beneficial effect:
1. it is simple in structure that the utility model a kind of is used for the specimen holder of high temperature and high pressure kettle gas phase or liquid phase corrosion test, and cost is lower and easy for installation;
2. a kind of specimen holder that is used for high temperature and high pressure kettle gas phase or liquid phase corrosion test of the utility model has solved under the prior art gas phase and liquid phase corrosion test and has separately carried out; The problem of waste plenty of time, energy and supplies consumption; Gas phase and liquid phase corrosion test are carried out simultaneously; Need not encapsulate, practice thrift test period greatly;
3. a kind of specimen holder that is used for high temperature and high pressure kettle gas phase or liquid phase corrosion test of the utility model; Its assembling adjustable number joint; Can tackle the sheet sample of the oil well pipe of various different tube diameters specifications effectively; And screw rod and pad all adopted insulation and resistant material to process, and experimental safe property further is improved with the accuracy of test image data.
Description of drawings
Fig. 1 is a kind of concrete structure synoptic diagram that is used for the specimen holder of high temperature and high pressure kettle gas phase or liquid phase corrosion test of the utility model;
Fig. 2 is a kind of concrete structure side view that is used for the specimen holder of high temperature and high pressure kettle gas phase or liquid phase corrosion test of the utility model.
Among the figure: the rectilinear sample bar of 1-, 2-sleeve, 3-trip bolt, 4-screw rod, 5-gaseous corrosion sample, 6-liquid level line, 7-liquid phase corrosion sample, 8-bolt, 9-insulation spacer.
Embodiment
Below in conjunction with accompanying drawing and embodiment a kind of specimen holder that is used for high temperature and high pressure kettle gas phase or liquid phase corrosion test of the utility model is done further description.
Embodiment
Extremely shown in Figure 2 like Fig. 1; At first when practical set, adopt trip bolt 3 will have the sleeve 2 of screw respectively on the top of rectilinear sample bar (present embodiment has used 4 check bars) 1 fixing, adopts threaded screw rod 4 to be connected between sleeve and the sleeve; Because screw rod adopts teflon processing; Can avoid having insulation effect simultaneously, and improve the accuracy of test image data because of the screw rod corrosion pollutes specimen surface.Gaseous corrosion sample 5 is suspended on the screw rod; Bolt is all adopted on the sample both sides; Then screw rod being screwed in sleeve fixes; Then same middle-end and the lower end of adopting bolt 8 to be fixed on rectilinear sample bar of liquid phase corrosion sample 7 is provided with the insulation spacer 9 that teflon is processed between gaseous corrosion sample, liquid phase corrosion sample and the bolt.
During test; A kind of specimen holder that is used for high temperature and high pressure kettle gas phase or liquid phase corrosion test of the utility model that installs sample is fixed on the autoclave kettle cover; Toward the interior injection test solution of autoclave; With the position of liquid surface height controlling liquid level line 6 in Fig. 1 to Fig. 2, the above sample of liquid level line carries out the gaseous corrosion test, and the sample below the liquid level line carries out the liquid phase corrosion test.When carrying out dynamic corrosion test, solution and air can rotate the corrosion situation of simulation material in gas phase and liquid phase fluid medium in the still under the drive of stirring vane.
A kind of specimen holder that is used for high temperature and high pressure kettle gas phase or liquid phase corrosion test of the utility model; Simple in structure; Safe and reliable, test figure is accurate, can be used for the sheet sample of the oil well pipe of different tube diameters specification; Need not encapsulate and apply, be applicable to the detection corrosion field of oil well pipe under the working condition of simulated oil gas field.
Claims (2)
1. a specimen holder that is used for high temperature and high pressure kettle gas phase or liquid phase corrosion test comprises rectilinear sample bar (1), it is characterized in that:
The top of described rectilinear sample bar (1) all is socketed with sleeve (2); Sleeve adopts trip bolt (3) fixing; Adopt a screw rod (4) to be connected between sleeve and the sleeve, and be hung with gaseous corrosion sample (5) on the screw rod, this gaseous corrosion sample must be positioned at the top of liquid level line (6).
The middle-end of described rectilinear sample bar (1) and lower end all are immersed in below the liquid level line (6), are immersed at this and are hung with liquid phase corrosion sample (7) on rectilinear sample bar below liquid level line.
2. a kind of specimen holder that is used for high temperature and high pressure kettle gas phase or liquid phase corrosion test as claimed in claim 1; It is characterized in that; Be hung with gaseous corrosion sample (5) on the described screw rod (4) and be immersed in and be hung with liquid phase corrosion sample (7) on the rectilinear sample bar (1) below the liquid level line; It is specially; The gaseous corrosion sample is screwed on the screw rod through bolt (8), and liquid phase corrosion sample equally also is screwed in the two ends of rectilinear sample bar through bolt, and bolt and gaseous corrosion sample, liquid phase are corroded between the sample and be provided with insulation spacer (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202695986U CN202177565U (en) | 2011-07-27 | 2011-07-27 | Sample clamp for high-temperature high-voltage kettle gas phase or liquid phase corrosion tests |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202695986U CN202177565U (en) | 2011-07-27 | 2011-07-27 | Sample clamp for high-temperature high-voltage kettle gas phase or liquid phase corrosion tests |
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| Publication Number | Publication Date |
|---|---|
| CN202177565U true CN202177565U (en) | 2012-03-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202695986U Expired - Fee Related CN202177565U (en) | 2011-07-27 | 2011-07-27 | Sample clamp for high-temperature high-voltage kettle gas phase or liquid phase corrosion tests |
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| CN (1) | CN202177565U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103364328A (en) * | 2012-03-30 | 2013-10-23 | 鞍钢股份有限公司 | Gas/liquid corrosion simulation test device and test method |
| CN103940727A (en) * | 2014-04-11 | 2014-07-23 | 西南石油大学 | Testing device for simulating high-temperature high-pressure flow corrosion of ground surface pipeline |
| CN104422648A (en) * | 2013-08-30 | 2015-03-18 | 宝山钢铁股份有限公司 | Oil well pipe material deposition sulfur corrosion test method and fixture for sulfur corrosion test |
| CN106979920A (en) * | 2017-05-08 | 2017-07-25 | 哈电集团（秦皇岛）重型装备有限公司 | Simulate the sample of HTHP and flow media and apply its simulation experiment method |
| CN110274866A (en) * | 2018-03-14 | 2019-09-24 | 中国石油化工股份有限公司 | The hanger device and method of gas phase and aqueous etching can be monitored simultaneously |
| CN111272644A (en) * | 2020-04-03 | 2020-06-12 | 台州龙江化工机械科技有限公司 | Liquid ammonia stress corrosion test device |
-
2011
- 2011-07-27 CN CN2011202695986U patent/CN202177565U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103364328A (en) * | 2012-03-30 | 2013-10-23 | 鞍钢股份有限公司 | Gas/liquid corrosion simulation test device and test method |
| CN104422648A (en) * | 2013-08-30 | 2015-03-18 | 宝山钢铁股份有限公司 | Oil well pipe material deposition sulfur corrosion test method and fixture for sulfur corrosion test |
| CN104422648B (en) * | 2013-08-30 | 2018-01-30 | 宝山钢铁股份有限公司 | A kind of oil well pipe material deposition sulfur corrosion test method and its test fixture |
| CN103940727A (en) * | 2014-04-11 | 2014-07-23 | 西南石油大学 | Testing device for simulating high-temperature high-pressure flow corrosion of ground surface pipeline |
| CN106979920A (en) * | 2017-05-08 | 2017-07-25 | 哈电集团（秦皇岛）重型装备有限公司 | Simulate the sample of HTHP and flow media and apply its simulation experiment method |
| CN106979920B (en) * | 2017-05-08 | 2023-08-25 | 哈电集团（秦皇岛）重型装备有限公司 | Sample for simulating high-temperature high-pressure flowing medium and simulation test method using same |
| CN110274866A (en) * | 2018-03-14 | 2019-09-24 | 中国石油化工股份有限公司 | The hanger device and method of gas phase and aqueous etching can be monitored simultaneously |
| CN110274866B (en) * | 2018-03-14 | 2022-05-20 | 中国石油化工股份有限公司 | Coupon device and method capable of simultaneously monitoring gas-phase corrosion and liquid-phase corrosion |
| CN111272644A (en) * | 2020-04-03 | 2020-06-12 | 台州龙江化工机械科技有限公司 | Liquid ammonia stress corrosion test device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120328 Termination date: 20130727 |