CN201138316Y - Loading unit for rock mechanic experiment under bittern flow field corrosion condition - Google Patents
Loading unit for rock mechanic experiment under bittern flow field corrosion condition Download PDFInfo
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- CN201138316Y CN201138316Y CNU2008200652429U CN200820065242U CN201138316Y CN 201138316 Y CN201138316 Y CN 201138316Y CN U2008200652429 U CNU2008200652429 U CN U2008200652429U CN 200820065242 U CN200820065242 U CN 200820065242U CN 201138316 Y CN201138316 Y CN 201138316Y
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- lower jaw
- flow field
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Abstract
The utility model discloses a loading device for a rock mechanics test under the brine erosion condition, including a container, a cylindrical pressure head with a ball end, a clamp upper jaw, a clamp lower jaw and a recycle pump. The two slots reserved on a stainless steel framework are coated with glass cement and are inserted with a synthetic glass sheet. Symmetrical strainer clamping slots are welded on the container, in which the strainer is inserted. A discharge hole at the container bottom is sealed by a bolt plug and a rubber cushion. A ball valve is connected with the container. The ball valve on the container is connected with the recycle pump by a transparent plastic hose. A rock sample splitting clamp is put in the container, consisting of the embowed clamp upper jaw and the embowed clamp lower jaw. The clamp upper jaw is connected with the cylindrical pressure head with the ball end. The utility model has simple structure and convenient operation, which can imitate the actual conditions that the brine and flow field act on the dissolved cavity together in the cavity making process of underground natural gas (oil) storage. The parameters obtained from indoor test become more real and reliable.
Description
Technical field
The utility model relates to rock mechanics and engineering test technical field, more specifically relates to the rock mechanics experiment loading unit under a kind of physics flow field and the coupling of chemical corrosion field.Be applicable to the testing experiment of considering the Tensile Strength of Rock under the steady flow condition erosion condition, be particularly useful for the test of mud stone and rock salt tensile strength in the bittern flow field corrosion process.
Background technology
Make in the process of chamber the water-soluble of deep underground salt karst cavity gas storage (oil) storehouse, the insoluble interlayer of cavity mainly is a mud stone, and the country rock of cavity then mainly is made up of mud stone and rock salt jointly.Studies show that water is fairly obvious to the influence of these two kinds of mechanical properties of rock.
Therefore, in the process of carrying out shop experiment, how to simulate the water-soluble actual condition of making the chamber process in gas storage (oil) storehouse effectively, will directly have influence on the confidence level of the parameter that obtains by test, thereby have influence on stability according to underground gas storage (oil) storehouse of these parameter designing and construction.
Gas storage (oil) storehouse is made collapsing of mud stone interlayer in the process of chamber and is broken bad the most commonly to draw, and records reliable mud stone tensile strength by test and just seems particularly important.But, measure the Brazilian diametral compression test of Tensile Strength of Rock at present and all in air, carry out mostly, do not consider rock mechanics properties under the coupling of physics flow field and chemical corrosion field; Simultaneously, the sample holder device of Brazilian splitting, existing can not self-regulating defective, causes test figure to have very big discreteness through regular meeting, and it is also comparatively loaded down with trivial details that the process of sample is installed.
Summary of the invention
The purpose of this utility model is the rock mechanics experiment loading unit that has been to provide under a kind of bittern flow field corrosion condition.This apparatus structure is simple, and is easy to operate, can simulate formation gas storage (oil) storehouse make in the process of chamber bittern and flow field acting in conjunction thereof in the actual condition in molten chamber, thereby the parameter that makes shop experiment record is more true and reliable.
In order to realize above-mentioned task objective, the utility model by the following technical solutions:
Device is made of container, the cylindrical pressure head of bulb, anchor clamps maxilla, anchor clamps lower jaw and ebullator.
The processing mode of each several part main member is as follows:
Bittern (principal ingredient is NaCl) has stronger corrosivity for general metal, and therefore, this installs all parts and welding material all adopts the corrosion material of anti-bittern.Container adopts corrosion resistant plate to be welded, and transparent windows adopts pmma material, and filter screen adopts stainless steel material, also can adopt the plastic filter screen with sufficient intensity; The sample holder device of Brazil's splitting forges the back cutting forming with stainless steel; Valve and bolt all adopt copper metal.
The rectangular parallelepiped that is shaped as upper surface open of container is made up of stainless steel frame and two poly (methyl methacrylate) plates.The corrosion resistant plate of stainless steel frame bottom has enough thickness (about suggestion 4mm), has enough crushing resistances to guarantee container bottom in the test loading procedure.In the welding process of stainless steel frame, the both sides, front and back are reserved two enough wide cracks and are used to lay poly (methyl methacrylate) plate.The filter screen holding tank at two ends, the left and right sides also needs welding, and the width of groove is decided on the thickness of filter screen, should guarantee the stability after filter screen inserts, should not be too wide.Process also should reserve the hole of mounting ball valve, and the discharge orifice that is used to discharge solution.
The anchor clamps that are used for the splitting rock sample are another one main points of this device.In Brazil's diametral compression test, can guarantee that it is crucial for the success or not of testing that sample is subjected to equally distributed strip load, can regulate automatically, take some effective measures in order to make these anchor clamps.According to the recommendation test method of international rock mechanics and Engineering society, adopt cylindrical sample in the process of the test, according to the characteristics of sample, the applicant has designed the arc anchor clamps.The arc anchor clamps can improve the stress state of rock sample compressive region effectively, can avoid the appearance and the expansion in the local plastotype of compression face district to greatest extent.The diameter of a circle at the arc place of arc anchor clamps is about 1.5 times of specimen finish, and cambered surface should have higher smoothness after machining, with reduce the compression face level to the adverse effect brought to test of frictional resistance.Anchor clamps are made up of two parts up and down, are called anchor clamps maxilla and anchor clamps lower jaw.Anchor clamps maxilla and the curved shape of anchor clamps lower jaw, in the process, the pin-and-hole of anchor clamps maxilla penetrates, the lower jaw pin-and-hole does not penetrate, should guarantee that the upper jaw and the lower jaw contact the upper surface that the back guide finger just can not spill maxilla fully, the benefit of doing like this is to use on the situation lower clamp that does not have cylindrical pressure head can be placed directly in the weighted platform of testing machine, makes anchor clamps have multiduty advantage.Should leave certain space between guide finger and the pin-and-hole, after guaranteeing that sample is put into anchor clamps, the top of anchor clamps can be adjusted among a small circle automatically.The bulb cylinder pressure head on anchor clamps top should be processed separately, and the register pin external diameter of pressure head bottom should match with the reservation pin-and-hole of anchor clamps maxilla.The design of this bulb can reduce the mismachining tolerance of anchor clamps and the not parallel adverse effect of bringing to test findings that testing machine loads pressure head effectively.
The corrosion resistance of ebullator also is the major issue that this device needs solution.Through comparative study repeatedly, selected MP plastic magnetic force ebullator.The running of magnetically-actuated ebullator is to be respectively fitted with magnetic material and the coupling of attracting each other on the connecting shaft He on the impeller, and the active magnetic ferropexy is fixed on the impeller from moving magnet on motor, drives the blade rotation by magnetic force when motor rotates.The magnetically-actuated ebullator adopt not to have the design of axle envelope, need not to be equipped with conventional mechanical bearings, thereby seals fully, has avoided the corrosion of the pump housing that leak of liquid causes.
The annexation of each member and acting as:
Container is formed by stainless steel frame with poly (methyl methacrylate) plate, stainless steel frame is welded by corrosion resistant plate, after stainless steel frame machines, in two slits that stainless steel frame is reserved, smear simple glass glue, in smearing the slit of glass cement, insert poly (methyl methacrylate) plate then, guarantee to have good sealing property between poly (methyl methacrylate) plate and the corrosion resistant plate, prevent the bittern seepage.The filter screen clip slot of four symmetries is welded on the stainless steel sidewall of container, and filter screen is worked the effect of gripping.Insert filter screen (filter screen of symmetry is inserted in the filter screen clip slot) in the filter screen clip slot of symmetry, effect is the even flow fieldization that makes in the container, can prevent that the rock residue from entering ebullator simultaneously.
The discharge orifice of container bottom adds the rubber gasket sealing with the bolt plug.Link to each other by fastening bolt respectively between ball valve and the container, add the rubber gasket sealing between fastening bolt and the container, prevent the bittern seepage.By transparent plastic hose ball valve on the container side and ebullator are linked together, ebullator provides power for the formation of steady flow condition, ball valve is used to regulate the flow velocity of container flow field, and the transparent plastic hose transparent function is to be convenient to during to the circulation pump water adding observe.Bittern in the container is inhaled into ebullator by ball valve and transparent plastic hose, enters container through transparent plastic hose and ball valve then, utilizes the shunting action of filter screen to form stable flow field in container.
The effect of rock sample splitting anchor clamps is to the rock sample load application, and it is made up of the splitting anchor clamps anchor clamps maxilla, anchor clamps lower jaw and guide finger.The anchor clamps lower jaw is placed on the middle part of container, in two pin-and-holes of anchor clamps lower jaw, insert guide finger, the guide finger pin-and-hole of anchor clamps maxilla is connected, guide finger is inserted the guide finger pin-and-hole respectively and the anchor clamps lower jaw makes up, the effect of guide finger is to guarantee that splitting anchor clamps maxilla moves and rock sample is split rear jig and still can keeps the stable of self in vertical direction.The register pin of the cylindrical pressure head of bulb is inserted the pressure head register pin pin-and-hole of anchor clamps maxilla, both are linked together.To rock sample splitting anchor clamps, it can also eliminate the test error that pressure testing machine pressing plate injustice is brought by the self-control of bulb to the cylindrical pressure head of bulb with the Load Transfer of pressure testing machine.
The utility model mainly contains following advantage:
1. simple in structure, with low cost.Do not need complicated mechanical processing, do not use valuable parts yet;
2. simple installation is applied widely.This device can be installed in the loading system of most pressure testing machines easily.The last lower lock block of rock test splitting anchor clamps adopts the arc design, helps the automatic adjusting that sample is installed the back device;
3. good observability.Testing crew can be observed the rock sample of internal tank through the poly (methyl methacrylate) plate of both sides, is convenient to the installation of test specimen, also is convenient to the destruction form of test specimen in the viewing test process;
4. resist chemical.Container adopts the stainless steel manufacturing, and bolt and valve all adopt copper metal, and what ebullator adopted is the corrosion-resistant plastic magnetic drive pump;
5. even flow field is stable.The small-bore filter screen that insert at the container two ends can make even flow fieldization effectively, has avoided the direct impact of high-velocity fluid to sample, can also avoid insoluble rock particles to enter ebullator;
6. the flow velocity scalable in flow field.Can regulate the copper ball valve at container two ends according to the flow velocity of actual condition, perhaps change the filter screen in different apertures, thereby obtain the flow field velocity similar to actual condition;
7. the ability that has synchronous working.Test specimen can load and multi-faceted observation when bittern flows immersion synchronously;
8. multi-usage.Valve-off can carry out the test under the static bittern eating condition, and Open valve then can carry out the test under the dynamic bittern eating condition.The rock test splitting anchor clamps of internal tank both can be placed in the bittern and use, and can be placed directly in again on the weighted platform of testing machine to use.Container also can be used for the test that other need steady flow condition or eating condition;
9. has self-regulation ability.Rock sample splitting design of Clamping Apparatus makes it have capacity of self-regulation; The bulb at its top can reduce the influence that the mismachining tolerance of sample is brought to experimental result greatly, also can effectively reduce the adverse effect that the foozle of lower platen on the testing machine causes to test findings.
Description of drawings
Fig. 1 is the structural representation of the rock mechanics experiment loading unit under a kind of bittern flow field corrosion condition.
Fig. 2 is the vertical view of Fig. 1.
Among the figure: 1-container, 2A, 2B-poly (methyl methacrylate) plate, 3A, 3B-filter screen, the cylindrical pressure head of 4-bulb, 5-pressure head register pin pin-and-hole, 6-anchor clamps maxilla, 7-anchor clamps lower jaw, 8A, 8B-guide finger pin-and-hole, 9A, 9B-guide finger, 10A, 10B-fastening bolt, 11A, 11B-ball valve, 12-bolt plug, 13A, 13B-transparent plastic hose, 14-ebullator (MP-15 plastic magnetic force ebullator), 15-filter screen clip slot, 16-rock sample.
Embodiment
Further describe embodiment of the present utility model below in conjunction with accompanying drawing.
The utility model is made of container (1), the cylindrical pressure head of bulb (4), anchor clamps maxilla (6), anchor clamps lower jaw (7), ebullator (14), rock sample (16).Be described below below in conjunction with the connected mode and the effect thereof of accompanying drawing each parts of the utility model:
Container (1) by stainless steel frame and and poly (methyl methacrylate) plate (2A, 2B) form, be used to hold bittern.Stainless steel frame is welded by corrosion resistant plate, after the stainless steel frame of container (1) machines, in two slits that stainless steel frame is reserved, smear glass cement, in smearing the slit of glass cement, insert poly (methyl methacrylate) plate (2A, 2B) then, guarantee to have good sealing property between poly (methyl methacrylate) plate (2A, 2B) and the corrosion resistant plate, prevent the bittern seepage, poly (methyl methacrylate) plate (2A, 2B) is the watch window of test.The filter screen clip slot (15) of four symmetries is welded on the stainless steel inwall of container (1), and (3A, 3B) works the effect of gripping to filter screen.Insert filter screen (3A, 3B) in the filter screen clip slot (15) of symmetry, effect is the even flow fieldization that makes in the container (1), can prevent that the rock residue from entering ebullator (14) simultaneously.
The discharge orifice of container (1) bottom adds the rubber gasket sealing with bolt plug (12), opens bolt plug (12) and the bittern in the container (1) can be emitted.Link to each other by fastening bolt (10A, 10B) respectively between ball valve (11A, 11B) and the container (1), add the rubber gasket sealing between fastening bolt (10A, 10B) and the container (1), prevent the bittern seepage.By transparent plastic hose (13A, 13B) ball valve on the container (1) and ebullator (14) are linked together, ebullator (14) provides power for the formation of steady flow condition, ball valve (11A, 11B) is used to regulate the flow velocity of container (1) flow field, and transparent plastic hose (13A, 13B) transparent function is to be convenient to when adding water observe to ebullator (14).Bittern in the container (1) is inhaled into ebullator (14) by ball valve (11B) and transparent plastic hose (13B), pass through transparent plastic hose (13A) then and ball valve (11A) enters container (1), utilize the shunting action of filter screen (3A, 3B) in container (1), to form stable flow field.
The effect of rock sample splitting anchor clamps is to rock sample (16) load application, and it is made up of the splitting anchor clamps anchor clamps maxilla (6), anchor clamps lower jaw (7) and guide finger (9A, 9B).Anchor clamps lower jaw (7) is placed on the middle part of container (1), in two pin-and-holes of anchor clamps lower jaw (7), insert guide finger (9A, 9B) respectively, the guide finger pin-and-hole (8A, 8B) of anchor clamps maxilla (6) is connected, guide finger (9A, 9B) is inserted guide finger pin-and-hole (8A, 8B) and anchor clamps lower jaw (7) respectively make up, the effect of guide finger (9A, 9B) is to guarantee that splitting anchor clamps maxilla (6) moves and rock sample (16) is split rear jig and still can keeps the stable of self in vertical direction.The register pin of the cylindrical pressure head of bulb (4) is inserted the pressure head register pin pin-and-hole (5) of anchor clamps maxillas (6), both are linked together.The cylindrical pressure head of bulb (4) with the Load Transfer of pressure testing machine to rock sample splitting anchor clamps, it can reduce the influence that the mismachining tolerance of sample is brought to experimental result, and it can also eliminate the mismachining tolerance of rock sample splitting anchor clamps and the test error that pressure testing machine pressing plate injustice is brought by the self-control of bulb.
A typical test operation process is as follows:
Ebullator (14) is placed on the other levelling bench of pressure testing machine, and container (1) is placed on the weighted platform of pressure testing machine together with the rock sample splitting anchor clamps of its inside.Adjust the position of container (1), make the watch window that has poly (methyl methacrylate) plate (2A, 2B) in the face of the laboratory technician.
Close ball valve (11A, 11B), pour bittern in container (1), the surface level of bittern is to cover rock sample (16) for well, and is unsuitable too high, otherwise bittern might spill in the process of the test.Open ball valve (11A, 11B), bittern pours into ebullator (14) by transparent plastic hose (13), finishes the operation to ebullator (14) water-filling.Soaked rock sample (16) is put between anchor clamps maxilla (6) and the anchor clamps lower jaw (7), and it is stable that it is automatically regulated in the cambered surface of anchor clamps maxilla (6) and anchor clamps lower jaw (7).Anchor clamps lower jaw (7) is adjusted slightly, guarantee to be free to slide between guide finger (9A, 9B) and the guide finger pin-and-hole (8A, 8B), can add an amount of butter in case of necessity and lubricate.
ON cycle pump (14) is adjusted ball valve (11A, 11B) or is changed the filter screen (3A, 3B) in different apertures, guarantees the even flow field in the container (1), and flow velocity is near actual condition.When adjusting ball valve (11A, 11B) and changing filter screen (3A, 3B), care should be used to is careful, prevents that bittern from splashing on the weighted platform of testing machine.Inspection guarantees that equipment operation is normal, after the even flow field, the opening pressure testing machine is tested, the pressure of pressure testing machine is applied on the rock sample (16) by the cylindrical pressure head of bulb (4) and anchor clamps maxilla (6) and anchor clamps lower jaw (7).In the process of the test, can pass through the real-time destructive process that poly (methyl methacrylate) plate (2A, 2B) is observed rock sample (16).
Rock sample (16) is split under the extruding load of anchor clamps maxilla (6) and anchor clamps lower jaw (7), and the test loading procedure is end, stops pressure testing machine, stops ebullator (14), takes out rock sample (16), and the new sample of packing into begins next test.
When not needing to simulate dynamic bittern flow field, then can directly close ebullator (14) and ball valve (11A, 11B), carry out the rock mechanics experiment under the static bittern eating condition.
Under the situation that does not need similarly to test again for a long time, can open the bolt plug (12) of discharge orifice, the bittern in the container (1) is emitted, and the rock sediment in the cleaning container (1) etc.
Claims (4)
1. the rock mechanics experiment loading unit under the bittern flow field corrosion condition, it comprises container (1), the cylindrical pressure head of bulb (4), anchor clamps maxilla (6), anchor clamps lower jaw (7), ebullator (14), it is characterized in that: container (1) by stainless steel frame and and poly (methyl methacrylate) plate (2A, 2B) form, in two slits that stainless steel frame is reserved, smear glass cement, in smearing the slit of glass cement, insert poly (methyl methacrylate) plate (2A, 2B), the filter screen clip slot (15) of four symmetries is welded on the stainless steel sidewall of container (1), in the filter screen clip slot (15) of symmetry, insert filter screen (3A, 3B), the discharge orifice of container (1) bottom adds the rubber gasket sealing with bolt plug (12), ball valve (11A, 11B) and between the container (1) respectively by fastening bolt (10A, 10B) link to each other, fastening bolt (10A, 10B) and add rubber gasket sealing between the container (1), by transparent plastic hose (13A, 13B) the ball valve (11A on the container (1), 11B) be connected with ebullator (14).
2. the rock mechanics experiment loading unit under a kind of bittern flow field corrosion condition according to claim 1, it is characterized in that: anchor clamps lower jaw (7) is placed in the container (1), in two pin-and-holes of anchor clamps lower jaw (7), insert guide finger (9A, 9B) respectively, the guide finger pin-and-hole (8A, 8B) of anchor clamps maxilla (6) is connected, guide finger (9A, 9B) is inserted guide finger pin-and-hole (8A, 8B) respectively make up with anchor clamps lower jaw (7).
3. the rock mechanics experiment loading unit under a kind of bittern flow field corrosion condition according to claim 1 is characterized in that: the register pin of the cylindrical pressure head of bulb (4) inserts the pressure head register pin pin-and-hole (5) of anchor clamps maxillas (6), and both connect.
4. the rock mechanics experiment loading unit under a kind of bittern flow field corrosion condition according to claim 1 is characterized in that: anchor clamps maxilla (6) and the curved shape of anchor clamps lower jaw (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200652429U CN201138316Y (en) | 2008-01-08 | 2008-01-08 | Loading unit for rock mechanic experiment under bittern flow field corrosion condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200652429U CN201138316Y (en) | 2008-01-08 | 2008-01-08 | Loading unit for rock mechanic experiment under bittern flow field corrosion condition |
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| CN201138316Y true CN201138316Y (en) | 2008-10-22 |
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| CNU2008200652429U Expired - Fee Related CN201138316Y (en) | 2008-01-08 | 2008-01-08 | Loading unit for rock mechanic experiment under bittern flow field corrosion condition |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100588945C (en) * | 2008-01-08 | 2010-02-10 | 中国科学院武汉岩土力学研究所 | Rock mechanics experiment loading unit for bittern flow field corrosion condition |
| CN104459034A (en) * | 2014-10-31 | 2015-03-25 | 中国石油天然气集团公司 | Cavity construction physical simulation device and method of single-well single-cavity salt-cavern gas storage |
| CN104459033A (en) * | 2014-10-31 | 2015-03-25 | 中国石油天然气集团公司 | Salt-cavern gas storage dual-well cavity construction physical simulation device and salt-cavern gas storage dual-well cavity construction physical simulation method |
| CN109580914A (en) * | 2019-01-15 | 2019-04-05 | 三峡大学 | A kind of dynamic water circulation and rock argillization process simulation device and test method under loading condition |
-
2008
- 2008-01-08 CN CNU2008200652429U patent/CN201138316Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100588945C (en) * | 2008-01-08 | 2010-02-10 | 中国科学院武汉岩土力学研究所 | Rock mechanics experiment loading unit for bittern flow field corrosion condition |
| CN104459034A (en) * | 2014-10-31 | 2015-03-25 | 中国石油天然气集团公司 | Cavity construction physical simulation device and method of single-well single-cavity salt-cavern gas storage |
| CN104459033A (en) * | 2014-10-31 | 2015-03-25 | 中国石油天然气集团公司 | Salt-cavern gas storage dual-well cavity construction physical simulation device and salt-cavern gas storage dual-well cavity construction physical simulation method |
| CN109580914A (en) * | 2019-01-15 | 2019-04-05 | 三峡大学 | A kind of dynamic water circulation and rock argillization process simulation device and test method under loading condition |
| CN109580914B (en) * | 2019-01-15 | 2021-11-02 | 三峡大学 | Rock argillization process simulation device and test method under dynamic water circulation and load conditions |
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| 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: 20081022 Termination date: 20110108 |