LU504928B1 - Test device for residual gas in shale samples - Google Patents
Test device for residual gas in shale samples Download PDFInfo
- Publication number
- LU504928B1 LU504928B1 LU504928A LU504928A LU504928B1 LU 504928 B1 LU504928 B1 LU 504928B1 LU 504928 A LU504928 A LU 504928A LU 504928 A LU504928 A LU 504928A LU 504928 B1 LU504928 B1 LU 504928B1
- Authority
- LU
- Luxembourg
- Prior art keywords
- slider
- clamping
- shale sample
- crushing chamber
- housing
- Prior art date
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- 238000012360 testing method Methods 0.000 title claims abstract description 46
- 238000004868 gas analysis Methods 0.000 claims abstract description 8
- 230000000712 assembly Effects 0.000 claims description 24
- 238000000429 assembly Methods 0.000 claims description 24
- 230000000694 effects Effects 0.000 abstract description 8
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 38
- 238000000034 method Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000008827 biological function Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2294—Sampling soil gases or the like
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
- B02C18/08—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within vertical containers
- B02C18/10—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within vertical containers with drive arranged above container
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/24—Suction devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0011—Sample conditioning
- G01N33/0016—Sample conditioning by regulating a physical variable, e.g. pressure, temperature
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
- G01N33/241—Earth materials for hydrocarbon content
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N7/00—Analysing materials by measuring the pressure or volume of a gas or vapour
- G01N7/14—Analysing materials by measuring the pressure or volume of a gas or vapour by allowing the material to emit a gas or vapour, e.g. water vapour, and measuring a pressure or volume difference
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
- G01N2001/2866—Grinding or homogeneising
Abstract
Described is a test device for residual gas in shale sample including a housing, a vacuum pump, an auxiliary releasing mechanism and a crushing mechanism. The housing is provided with a crushing chamber. The housing is further provided with an opening for gas analysis and an opening for vacuum, both of which are communicated with the crushing chamber. The vacuum pump is connected with the opening for vacuum and is able to evacuate the crushing chamber. The auxiliary releasing mechanism is arranged on the housing and extends into the crushing chamber. The auxiliary releasing mechanism is able to hold and store a shale sample, and drop the shale sample into the crushing chamber after the crushing chamber is evacuated. The crushing mechanism is arranged on the housing and is able to crush the shale sample in the crushing chamber. The test device provided by the present application is provided with a vacuum pump which is able to evacuate the crushing chamber and ensure that the air in the crushing chamber is expelled, which is beneficial for the test on the shale sample. The errors can be effectively reduced and the test result will be accurate. The test effect and the practicability of the test device provided by the present application are good.
Description
TEST DEVICE FOR RESIDUAL GAS IN SHALE SAMPLES
The application belongs to the technical field of rock sample test, and particularly relates to a test device for residual gas in shale samples.
Shale gas is a kind of natural gas. Shale gas can be gathered and stored in shale or high carbon shale which is rich in organic matter, mature and dark, because of the adsorption effect of organic matter or the fractures and matrix pores existing in shale. Shale gas may be generated from biological function, thermal decomposition function or mixing of both. Shale gas has commercial value and very broad exploitation prospects. Before shale gas exploitation, it is necessary to collect shale samples and then perform testing and analysing on the shale samples, in which the test of shale gas content is involved.
In the prior art, when the test for the residual gas in shale sample is performed, a residual gas test device is usually used. The residual gas test device is provided with a working chamber and a crushing mechanism is arranged in the working chamber. After a shale sample is put in the working chamber, the crushing mechanism crushes the shale sample to release the residual gas in the shale sample. Then the test on the residual gas in the shale sample can be performed. However, after the shale sample is put in the working chamber, the working chamber cannot be sealed which results in that some of the residual gas released in the crushing process of the shale sample disperses into air and the content of the residual gas in the shale sample cannot be measured accurately. In addition, even though the working chamber is sealed, some of the air in the working chamber cannot be expelled which results in that the measurement result of the residual gas is greater than the true content of the residual gas. Although this measurement result with errors can be corrected by performing component analysing on the gas collected in the test, it is hard to remove the errors completely because the amount of residual gas is too small relative to the amount of the air. In summary, the practicability of residual gas test device in the prior is poor.
The application provides a test device for residual gas in shale sample to solve the problem that the practicability of residual gas test device in the prior is poor. -1-
To solve the above problems, the present application provides a test device for residual gas in shale sample including a housing, a vacuum pump, an auxiliary releasing mechanism and a crushing mechanism.
The housing is provided with a crushing chamber, an opening for gas analysis and an opening for vacuum. Both the opening for gas analysis and the opening for vacuum are communicated with the crushing chamber.
The vacuum pump is connected with the opening for vacuum and configured to evacuate the crushing chamber.
The auxiliary releasing mechanism is arranged on the housing and extends into the crushing chamber. The auxiliary releasing mechanism is configured to hold and store the shale sample, and drop the shale sample into the crushing chamber after the crushing chamber is evacuated.
The crushing mechanism is arranged on the housing and is configured to crush the shale sample in the crushing chamber.
In an embodiment, the auxiliary releasing mechanism includes a fixed housing, an upper cover, a lower cover, two clamping assemblies, a pushing assembly and a first retractable structure. The fixed housing is detachably connected with the housing. The fixed housing is provided with a containment chamber. An upper end of the fixed housing is provided with an inlet and a lower end of the fixed housing is provided with an outlet. Both the inlet and the outlet are communicated with the containment chamber. The upper cover is detachably connected with the fixed housing and is configured to seal the inlet after the shale sample put into the containment chamber. The lower cover is rotatably connected with the fixed housing and is configured to seal the outlet. The two clamping assemblies are arranged in the containment chamber and horizontally spaced apart to form a clamping holding space for the shale sample to be placed. The pushing assembly is arranged on the upper cover and is configured to push the two clamping assemblies to remove a restriction imposed by the two clamping assemblies on the shale sample after the lower cover is opened, thus the shale sample drops from the clamping holding space to the crushing chamber. The first retractable structure is provided with a first fixed end and a first retractable end. The first fixed end is connected with the fixed housing, and the first retractable end is connected with the lower cover to drive the lower cover to rotate up and down.
In an embodiment, the spaced apart direction of the two clamping assemblies is a first direction, and the horizontal direction perpendicular to the first direction is a second direction.
Each clamping assembly includes a slider holding, a clamping holding plate, at least two -2-
tension springs, at least two position limiting blocks, at least two springs and at least two pull ropes. The slider holding is slidably arranged in the containment chamber. A slider cavity passes through the slider holding along a vertical direction. A horizontal opening of the slider cavity of one slider holding is close to and face to the other slider holding. The clamping holding plate is vertically arranged in the slider cavity and is slidable along the vertical direction. When two clamping holding plates are pushed by the pushing assembly, the two clamping holding plates, while moving downward, move horizontally away from each other in the first direction.
The at least two tension springs pull the clamping holding plate, thus the clamping holding plate maintains a tendency to move upward. A bottom end of the clamping holding plate is provided with at least two limit holes that corresponds one to one to the at least two position limiting blocks, the at least two springs and the at least two pull ropes. Each position limiting block is arranged in a corresponding limit hole and is slidable along the first direction. An end of each position limiting block extends out of the corresponding limit hole to limit a vertical position of the shale sample placed in the clamping holding space. Each spring is arranged in a corresponding limit hole to push a corresponding position limiting block arranged in the corresponding limit hole, thus the corresponding position limiting block maintains a tendency to move out of the corresponding limit hole. The at least two pull ropes are provided at intervals along the second direction. One end of each pull rope is connected with a corresponding position limiting block, and the other end of each pull rope is connected with the slider holding after passing through the clamping holding plate. When the clamping holding plate moves downward, each pull rope pulls the corresponding position limiting block thus the corresponding position limiting block slides into a corresponding limit hole.
Two inner walls of the slider cavity are provided with at least two sliding holes for the sliding of the clamping holding plate.
Two sliding rails are provided in the containment chamber for the sliding of the slider holding.
In an embodiment, the slider holding includes a back plate and two side plates. The back plate and the two side plates are arranged vertically. The two side plates are arranged spaced in the second direction. Both the two side plates are connected with the back plate in one piece.
The back plate and the two side plates enclose to form the slider cavity.
Two side walls of the containment chamber facing each other are provided with two sliding rails, respectively, that are slidably connected with the two side plates.
In an embodiment, each side plate is provided with at least two sliding holes that are spaced vertically. -3-
Each sliding hole is incliningly arranged.
Two ends of the clamping holding plate are provided with at least two sliding rods that extend along the second direction and correspond to the at least two sliding holes one to one.
The at least two tension springs correspond to the at least two sliding rods one to one, one end of each tension spring is connected with a corresponding sliding rod, and the other end of each tension spring is connected with the side plate.
In an embodiment, the pushing assembly comprises a second retractable structure and a horizontal rod. The second retractable structure is provided with a second fixed end and a second retractable end. The second fixed end is fixedly arranged on the upper cover. The second retractable end passes through the upper cover and extends into the containment chamber. The horizontal rod is arranged horizontally and is connected with the second retractable end. The horizontal rod is configured to push the two clamping holding plates downward.
A top end of each back plate is provided with a notch to prevent the horizontal rod from bumping each back plate.
In an embodiment, the auxiliary releasing mechanism further includes two adjustment assemblies that are arranged, along the second direction, at two sides of two slider holdings, respectively. Each adjustment assembly includes a screw, a screwed sleeve and two connection rods. The screw is vertically arranged and between the two slider holdings. The screw is connected with one of the two sliding rails through thread. The screwed sleeve is rotatably connected with a top end of the screw. Two connection rods are arranged corresponding to the two slider holdings one to one. One end of each connection rod is connected with the screwed sleeve, and the other end of each connection rod is rotatably connected with a side plate of one of the two slider holdings.
A limit ring is fixedly arranged on the screw to limit a position of the screwed sleeve.
When the screw is rotated, the screw drives the screwed sleeve to move upward or downward thus the screwed sleeve drives the two slider holdings to horizontally move close to or far away each other by the two connection rods.
In an embodiment, the crushing mechanism includes a driver, a rotating shaft and a plurality of crushing cutters. The driver is fixedly arranged on a top end of the housing. One end of the rotating shaft is connected with a power output of the driver, and the other end of the rotating shaft vertically extends into the crushing chamber. The plurality of crushing cutters are arranged at a lower part of the rotating shaft and are evenly arranged around the rotating shaft. -4-
Compared with the prior art, the test device provided by the present application is provided with a vacuum pump which is able to evacuate the crushing chamber and ensure that the air in the crushing chamber is expelled, which is beneficial for the test on the shale sample. The crushing mechanism is able to crush the shale sample and make the residual gas released. The auxiliary releasing mechanism arranged on the housing is able to hold and store the shale sample when the crushing chamber is being evacuated. The auxiliary releasing mechanism is also able to drop the shale sample into the crushing chamber when the crushing chamber is in a vacuum state. When the crushing chamber is being evacuated, the shale sample is not in the crushing chamber, which prevents the effect of the evacuating process on residual gas in shale sample. Therefore, the errors are effectively reduced and the test result will be accurate. The test effect and the practicability of the test device provided by the present application are good.
FIG. 1 is a structure schematic diagram of the test device for residual gas in shale sample according to the embodiments of the present application;
FIG. 2 is a structure schematic diagram of the auxiliary releasing mechanism of the test device for residual gas in shale sample according to the embodiments of the present application (where the upper cover, the lower cover, pushing assembly, the first retractable structure and the fixed housing are not shown);
FIG. 3 is a front view structure schematic of the auxiliary releasing mechanism of the test device for residual gas in shale sample according to the embodiments of the present application;
FIG. 4 is a side view structure schematic of the clamping assembly of the test device for residual gas in shale sample according to the embodiments of the present application;
FIG. 5 is a cross-section along the section line A-A according to FIG. 4; and
FIG. 6 is a cross-section along the section line B-B according to FIG. 4.
In the drawings: 10-housing; 11-crushing chamber; 12-opening for gas analysis; 13-opening for vacuum; 20- auxiliary releasing mechanism; 21-fixed housing; 211-containment chamber; 212-sliding rail; 22- upper cover; 23-lower cover; 24-clamping assembly; 241-slider holding; 242-clamping holding plate; 243-tension spring; 244-position limiting block; 245-spring; 246-pull rope; 247-back plate; 248-side plate; 249-sliding hole; 25-pushing assembly; 251-second retractable structure; 252- horizontal rod; 26- first retractable structure; 27-adjustment assembly; 271-screw; 272-screwed -5-
sleeve; 273-connection rod; 30-crushing mechanism; 31-driver; 32- rotating shaft; 33-crushing cutter.
To make the technical problems to be solved, technical solutions, and advantageous effects of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are illustrative only and are not restrictive.
Please refer to FIGS. 1 to 6, the test device for residual gas in shale sample provided by the present application is illustrated below. As shown in FIG. 1, the test device for residual gas in shale sample may include a housing 10, a vacuum pump, an auxiliary releasing mechanism and a crushing mechanism 30. The housing 10 is provided with a crushing chamber 11. The housing 10 is provided with an opening for gas analysis 12 and an opening for vacuum 13, both of which are communicated with the crushing chamber 11. The vacuum pump is connected with the opening for vacuum 13 and is able to evacuate the crushing chamber 11. The auxiliary releasing mechanism 20 is arranged on the housing 10 and extends into the crushing chamber 11. The auxiliary releasing mechanism 20 is able to hold and store a shale sample, and drop the shale sample into the crushing chamber 11 after the crushing chamber 11 is evacuated. The crushing mechanism 30 is arranged on the housing 10 and is able to crush the shale sample in the crushing chamber 11.
Compared with the prior art, the test device provided by the present application is provided with a vacuum pump which is able to evacuate the crushing chamber 11 and ensure that the air in the crushing chamber 11 is expelled, which is beneficial for the test on the shale sample. The crushing mechanism 30 is able to crush the shale sample and make the residual gas released.
The auxiliary releasing mechanism 20 arranged on the housing 10 is able to hold and store the shale sample when the crushing chamber 11 is being evacuated. The auxiliary releasing mechanism 20 is also able to drop the shale sample into the crushing chamber 11 when the crushing chamber 11 is in a vacuum state. When the crushing chamber 11 is being evacuated, the shale sample is not in the crushing chamber 11, which prevents the effect of the evacuating process on residual gas in shale sample. Therefore, the errors are effectively reduced and the test result will be accurate. The test effect and the practicability of the test device provided by the present application are good.
It should be noted that the opening for gas analysis 12 is configured to be connected with a gas analyser to collect the residual gas released from the shale sample, perform analysis on the -6-
residual gas and record analysis data. Gas analyser is known in the art and is not described in detail here.
In an embodiment, the auxiliary releasing mechanism 20 may adopt the structure shown in
FIG. 2 and FIG. 3. As shown in FIG. 2 and FIG. 3, the auxiliary releasing mechanism 20 may include a fixed housing 21, an upper cover 22, a lower cover 23, two clamping assemblies 24, a pushing assembly 25 and a first retractable structure 26. The fixed housing 21 is detachably connected with the housing 10. The fixed housing 21 is provided with a containment chamber 211. The upper end of the fixed housing 21 is provided with an inlet and the lower end of the fixed housing 21 is provided with an outlet. Both the inlet and the outlet are communicated with the containment chamber 211. The upper cover 22 is detachably connected with the fixed housing 21 and is able to seal the inlet after the shale sample put into the containment chamber 211. The lower cover 23 is rotatably connected with the fixed housing 21 and is able to seal the outlet. Two clamping assemblies 24 are arranged in the containment chamber 211. Two clamping assemblies 24 are arranged horizontally spaced apart to form a clamping holding space for the shale sample to be placed between the two clamping assemblies 24. The pushing assembly 25 is arranged on the upper cover 22 and is able to touch and push the clamping assemblies 24. After the lower cover 23 is opened, the pushing assembly 25 can push the clamping assemblies 24 to remove the restrictions imposed by the two clamping assemblies 24 on the shale sample, thus the shale sample can drop from the clamping holding space to the crushing chamber 11. The first retractable structure 26 is provided with a fixed end and a retractable end. The fixed end of the first retractable structure 26 is connected with the fixed housing 21. The retractable end of the first retractable structure 26 is connected with the lower cover 23 to drive the lower cover 23 to rotate up and down.
The upper cover 22 arranged on the fixed housing 21 can control the opening and closing of the inlet of the containment chamber 211 to realize the placement of the shale sample into the clamping holding space. The lower cover 23 arranged on the fixed housing 21 can control the opening and closing of the outlet of the containment chamber 211 to be able to let the shale sample drop from the clamping holding space to the crushing chamber 11 when the crushing chamber 11 is in a vacuum state. Two clamping assemblies 24 can clamp and hold the shale sample. Two clamping assemblies 24 may provide a placement platform for the shale sample to ensure the stability of the shale sample placed in the containment chamber 211. If the shale sample is not stable, the residual gas in the shale sample may be released unexpectedly thus adversely affecting test results. The first retractable structure 26 can drive the lower cover 23 to rotate up and down, thus realizing the control of the opening and closing of the outlet. 7-
In this embodiment, the fixed housing 21 may be connected with the housing 10 by a flange. The upper cover 22 may be connected with the fixed housing 21 by a flange. The containment chamber 211 may be cuboidal. The first retractable structure may be an electric liner actuator.
In an embodiment, two clamping assemblies 24 may adopt the structure shown in FIG. 3 to
FIG. 6. Set the spaced apart direction of two clamping assemblies 24 as a first direction. Set the horizontal direction that is perpendicular to the first direction as a second direction.
As shown in FIG. 3 to FIG. 6, each clamping assembly 24 may include a slider holding 241, a clamping holding plate 242, at least two tension springs 243, at least two position limiting blocks 244, at least two springs 245 and at least two pull ropes 246. The slider holding 241 is slidable and is arranged in the containment chamber 211. A slider cavity passes through the slider holding 241 along the vertical direction. The horizontal opening of the slider cavity of one slider holding 241 is close to and face to the other slider holding 241. The clamping holding plate 242 is vertically arranged in the slider cavity and is slidable along the vertical direction.
When the two clamping holding plates 242 are pushed by the pushing assembly 25, the two clamping holding plates 242, while moving downward, move horizontally away from each other in the first direction. The tension springs 243 pull the clamping holding plate 242 so that the clamping holding plate 242 maintains a tendency to move upward. The bottom end of the clamping holding plate 242 is provided with at least two limit holes. The position limiting block 244 is arranged at the bottom end of the clamping holding plate 242. The position limiting block 244 is arranged in the limit hole and is slidable along the first direction. An end of the position limiting block 244 extends out of the limit hole to limit the position of the shale sample placed in the clamping holding space in the vertical direction. A spring 245 is arranged in each limit hole.
The spring 245 pushes the position limiting block 244 so that the position limiting block 244 maintains a tendency to move out of the limit hole. The pull ropes 246 are provided at intervals along the second direction. One end of each pull rope 246 is connected with the position limiting block 244, and the other end of the pull rope 246 is connected with the slider holding 241 after passing through the clamping holding plate 242. When the clamping holding plate 242 moves downward, the pull ropes 246 pull the position limiting blocks 244, so that the position limiting blocks 244 slides into the limit holes.
In this embodiment, the inner walls of the slider cavity are provided with at least two sliding holes 249 for the sliding of the clamping holding plate 242.
In this embodiment, two sliding rails 212 are provided in the containment chamber 211 for the sliding of the slider holdings 241. -8-
When the pushing assembly 25 pushes two clamping holding plates 242, two clamping holding plates 242 move downward. Meanwhile, two clamping holding plates 242 move far away from each other in the horizontal direction, so that two clamping holding plates 242 are no longer able to clamp the shale sample placed between two clamping holding plates 242 and the restrictions imposed by two clamping holding plates 242 on the shale sample are removed. In addition, when two clamping holding plates 242 move downward, the pull ropes 246 pull the position limiting blocks 244 and the position limiting blocks 244 slides into the limit holes, so that the position limiting blocks 244 are no longer able to limit the vertical position of the shale sample and the vertical position limit to the shale sample is removed. Therefore, all the restrictions and limitations on the shale sample are removed and the shale sample is able to drop into the crushing chamber 11. When the pushing assembly 25 reset and no longer pushes two clamping holding plates 242, driven by the tension springs 243, two clamping holding plates 242 move upward and move close to each other in the horizontal direction. Meanwhile, driven by the springs 245, the position limiting blocks 244 reset and slide out of the limit holes. In this embodiment, the clamping restriction generated by the clamping holding plates 242 and the blocking limit generated by the position limiting block 224 can be removed at the same time through the pushing assembly 25 pushing the clamping holding plates 242 downward, which has a linkage effect and can control the dropping of the shale sample easily.
In this embodiment, the clamping holding space is formed between two clamping holding plates 242. The clamping holding plate 242 may be rectangular. The surface of one clamping holding plate 242 facing to the other clamping holding plate 242 may be provided with a curved groove to ensure that the shale sample clamped by two clamping holding plates 242 is at centre.
The clamping holding plate 242 is provided with rope openings for the pull ropes 246 passing through the clamping holding plate 242. In addition, the clamping holding plate 242 may be provided with fixed pulleys to prevent the pull ropes 246 from sliding friction with the clamping holding plate 242.
In an embodiment, the slider holding 241 may adopt the structure shown in FIG. 2. As shown in FIG. 2, the slider holding 241 may include a back plate 247 and two side plates 248.
All of the back plate 247 and the side plates 248 are arranged vertically. Two side plates 248 are arranged spaced in the second direction. Both side plates 248 are connected with the back plate 247 in one piece. The back plate 247 and two side plates 248 enclose to form the slider cavity. -9-
In this embodiment, two side walls of the containment chamber 211 facing each other are provided with two sliding rails 212, respectively. The side plates 248 are slidably connected with the sliding rails 212.
The structure enclosed by the back plate 247 and the side plates 248 looks like the Chinese character “LI”, which can ensure the sliding connection of the clamping holding plate 242. The structure is simple and easy to manufacture.
In addition, as shown in FIG. 2, each side plate 248 may be provided with a sliding part slidingly connected with the sliding rails 212.
In an embodiment, the side plates 248 and sliding holes 249 may adopt the structure shown in FIG. 6. As shown in FIG. 6, each side plate 248 is provided with at least two sliding holes 249 which are spaced vertically.
In this embodiment, each sliding hole 249 is incliningly arranged.
In this embodiment, two ends of the clamping holding plate 242 are provided with sliding rods which extend along the second direction and correspond to the sliding holes 249 one to one.
In this embodiment, the tension springs 243 correspond to the sliding rods one to one. One end of each tension spring 243 is connected with the corresponding sliding rod, and the other end of the tension spring 243 is connected with the side plate 248.
The structure of the sliding holes 249 incliningly arranged is simple and can ensure that two clamping holding plates 242 move far away from each other in the horizontal direction while moving downward. The sliding rods and the sliding holes 249 cooperate to realize the sliding connection between the clamping holding plate 242 and the side plates 248. The tension springs 243 impose traction on the clamping holding plates 242 so that the clamping holding plates 242 can reset when they are no longer pushed by the pushing assembly 25.
In this embodiment, as shown in FIG. 6, the side plate 248 is provided with cavities for placing the tension springs 243.
In an embodiment, the pushing assembly may adopt the structure shown in FIG. 3. As shown in FIG. 3, the pushing assembly may include a second retractable structure 251 and a horizontal rod 252. The second retractable structure 251 is provided with a fixed end and a retractable end. The fixed end of the second retractable structure 251 is fixedly arranged on the upper cover 22. The retractable end of the second retractable structure 251 passes through the upper cover 22 and extends into the containment chamber 211. The horizontal rod 252 is arranged horizontally and is connected with the retractable end of the second retractable structure 251. The horizontal rod 252 can push two clamping holding plates 242 downward. -10-
In this embodiment, the top end of each back plate 247 is provided with a notch to prevent the horizontal rod 252 from bumping the back plate 247.
The structure provided in this embodiment can push the clamping holding plates 242 effectively. The notch arranged at the top end of the back plate 247 can prevent the horizontal rod 252 and the back plate 247 from interfering.
In an embodiment, the auxiliary releasing mechanism 20 may adopt the structure shown in
FIG. 2. As shown in FIG. 2, the auxiliary releasing mechanism 20 may further include two adjustment assemblies 27 which are arranged, along the second direction, at two sides of the slider holdings 241, respectively. Each adjustment assembly 27 includes a screw 271, a screwed sleeve 272 and two connection rods 273. The screw 271 is vertically arranged and between two slider holdings 241. The screw 271 is connected with the sliding rail 212 through thread. The screwed sleeve 272 is rotatably connected with the top end of the screw 271. Two connection rods 273 are arranged corresponding to the slider holdings 241 one to one. One end of each connection rod 273 is connected with the screwed sleeve 272, and the other end of the connection rod 273 is rotatably connected with the side plate 248.
In this embodiment, a limit ring is fixedly arranged on the screw 271 to limit the position of the screwed sleeve 272.
In this embodiment, when the screw 271 is rotated, the screw 271 drives the screwed sleeve 272 to move up and down. Further, the screwed sleeve 272 drives two slider holdings 241 to horizontally move far away or close to each other by two connection rods 273. When two slider holdings 241 move far away or close to each other, the distance between two slider holdings 241 can be changed to accommodate shale samples with different diameters. The adaptability and practicality of the structure provided by this embodiment are good.
In an embodiment, the crushing mechanism 30 may adopt the structure shown in FIG. 1. As shown in FIG. 1, the crushing mechanism 30 may include a driver 31, a rotating shaft 32 and a plurality of crushing cutters 33. The driver 31 is fixedly arranged on the top end of the housing 10. One end of the rotating shaft 32 is connected with the power output of the driver 31, and the other end of the rotating shaft 32 vertically extends into the crushing chamber 11. The crushing cutters 33 are arranged at the lower part of the rotating shaft 32 and are evenly arranged around the rotating shaft 32. The crushing mechanism 30 can crush the shale sample and release the residual gas in shale sample. The crushing mechanism 30 may adopt a known structure in the art which is not described in detail here. -11-
Claims (8)
1. A test device for residual gas in a shale sample, comprising a housing (10) provided with a crushing chamber (11), an opening for gas analysis (12) and an opening for vacuum (13), wherein — both the opening for gas analysis (12) and the opening for vacuum (13) are communicated with the crushing chamber (11); — a vacuum pump connected with the opening for vacuum (13) and configured to evacuate the crushing chamber (11); — an auxiliary releasing mechanism (20) arranged on the housing (10) and extending into the crushing chamber (11), wherein the auxiliary releasing mechanism (20) is configured to hold and store the shale sample, and drop the shale sample into the crushing chamber (11) after the crushing chamber (11) is evacuated; and — a crushing mechanism (30) arranged on the housing (10) and is configured to crush the shale sample in the crushing chamber (11).
2. The test device according to claim 1, wherein the auxiliary releasing mechanism (20) comprises a fixed housing (21), an upper cover (22), a lower cover (23), two clamping assemblies (24), a pushing assembly (25) and a first retractable structure (26); wherein — the fixed housing (21) is detachably connected with the housing (10), — the fixed housing (21) is provided with a containment chamber (211), — anupper end of the fixed housing (21) is provided with an inlet and a lower end of the fixed housing (21) is provided with an outlet, — both the inlet and the outlet are communicated with the containment chamber (211), — the upper cover (22) is detachably connected with the fixed housing (21) and is configured to seal the inlet after the shale sample put into the containment chamber (211), — the lower cover (23) is rotatably connected with the fixed housing (21) and is configured to seal the outlet, — the two clamping assemblies (24) are arranged in the containment chamber (211) and horizontally spaced apart to form a clamping holding space for the shale sample to be placed, wherein the pushing assembly (25) is arranged on the upper cover (22) and is configured to push the two clamping assemblies (24) to remove a restriction imposed by the two clamping assemblies (24) on the shale sample after the lower cover (23) is opened, -12-
thereby the shale sample drops from the clamping holding space to the crushing chamber (11), — the first retractable structure (26) is provided with a first fixed end and a first retractable end, — the first fixed end is connected with the fixed housing (21), and — the first retractable end is connected with the lower cover (23) to drive the lower cover (23) to rotate up and down.
3. The test device according to claim 2, wherein a spaced apart direction of the two clamping assemblies (24) is a first direction, a horizontal direction perpendicular to the first direction is a second direction, each clamping assembly (24) comprising a slider holding (241), a clamping holding plate (242), at least two tension springs (243), at least two position limiting blocks (244), at least two springs (245) and at least two pull ropes (246), wherein — the slider holding (241) is slidably arranged in the containment chamber (211), — a slider cavity passes through the slider holding (241) along a vertical direction, — a horizontal opening of the slider cavity of one slider holding (241) is close to and face to the other slider holding (241), — the clamping holding plate (242) is vertically arranged in the slider cavity and is slidable along the vertical direction, — when two clamping holding plates (242) are pushed by the pushing assembly (25), the two clamping holding plates (242), while moving downward, move horizontally away from each other in the first direction, the at least two tension springs (243) pull the clamping holding plate (242) thereby the clamping holding plate (242) maintains a tendency to move upward, — a bottom end of the clamping holding plate (242) is provided with at least two limit holes that corresponds one to one to the at least two position limiting blocks (244), — the at least two springs (245) and the at least two pull ropes (246), each position limiting block (244) is arranged in a corresponding limit hole and is slidable along the first direction, — an end of each position limiting block (244) extends out of the corresponding limit hole to limit à vertical position of the shale sample placed in the clamping holding space, — each spring (245) is arranged in a corresponding limit hole to push a corresponding position limiting block (244) arranged in the corresponding limit hole thereby the corresponding position limiting block (244) maintains a tendency to move out of the corresponding limit hole, -13-
— the at least two pull ropes (246) are provided at intervals along the second direction, — one end of each pull rope (246) is connected with a corresponding position limiting block (244), and the other end of each pull rope (246) is connected with the slider holding (241), — after passing through the clamping holding plate (242), when the clamping holding plate (242) moves downward, each pull rope (246) pulls the corresponding position limiting block (244) thereby the corresponding position limiting block (244) slides into a corresponding limit hole; — two inner walls of the slider cavity are provided with at least two sliding holes (249) for a sliding of the clamping holding plate (242); and — two sliding rails (212) are provided in the containment chamber (211) for a sliding of the slider holding (241).
4. The test device according to claim 3, wherein the slider holding (241) comprises a back plate (247) and two side plates (248), wherein — the back plate (247) and the two side plates (248) are arranged vertically, — the two side plates (248) are arranged spaced in the second direction, — both the two side plates (248) are connected with the back plate (247) in one piece, — the back plate (247) and the two side plates (248) enclose to form the slider cavity; and — two side walls of the containment chamber (211) facing each other are provided with two sliding rails (212), respectively, that are slidably connected with the two side plates (248).
5. The test device according to claim 4, wherein — each side plate (248) is provided with at least two sliding holes (249) that are spaced vertically; — each sliding hole (249) is incliningly arranged; — two ends of the clamping holding plate (242) are provided with at least two sliding rods that extend along the second direction and correspond to the at least two sliding holes (249) one to one; — the at least two tension springs (243) correspond to the at least two sliding rods one to one, — one end of each tension spring (243) is connected with a corresponding sliding rod, and — the other end of each tension spring (243) is connected with the side plate (248). -14-
6. The test device according to claim 4, wherein the pushing assembly (25) comprises a second retractable structure (251) and a horizontal rod (252), wherein — the second retractable structure (251) is provided with a second fixed end and a second retractable end, — the second fixed end is fixedly arranged on the upper cover (22), — the second retractable end passes through the upper cover (22) and extends into the containment chamber (211), — the horizontal rod (252) is arranged horizontally and is connected with the second retractable end, — the horizontal rod (252) is configured to push the two clamping holding plates (242) downward; and — a top end of each back plate (247) is provided with a notch to prevent the horizontal rod (252) from bumping each back plate (247).
7. The test device according to claim 4, wherein the auxiliary releasing mechanism (20) further comprises two adjustment assemblies (27) that are arranged, along the second direction, at two sides of two slider holdings (241), respectively; wherein — each adjustment assembly (27) comprises a screw (271), a screwed sleeve (272) and two connection rods (273), — the screw (271) is vertically arranged and between the two slider holdings (241), — the screw (271) is connected with one of the two sliding rails (212) through thread, — the screwed sleeve (272) is rotatably connected with a top end of the screw (271), — two connection rods (273) are arranged corresponding to the two slider holdings (241) one to one, — one end of each connection rod (273) is connected with the screwed sleeve (272), — the other end of each connection rod (273) is rotatably connected with a side plate (248) of one of the two slider holdings (241); — alimit ring is fixedly arranged on the screw (271) to limit a position of the screwed sleeve (272); and — when the screw (271) is rotated, the screw (271) drives the screwed sleeve (272) to move upward or downward thereby the screwed sleeve (272) drives the two slider holdings (241) to horizontally move close to or far away each other by the two connection rods (273). -15-
8. The test device according to claim 4, wherein the crushing mechanism (30) comprises a driver (31), a rotating shaft (32) and a plurality of crushing cutters (33), wherein — the driver (31) is fixedly arranged on a top end of the housing (10), — one end of the rotating shaft (32) is connected with a power output of the driver (31), — the other end of the rotating shaft (32) vertically extends into the crushing chamber (11),
and — the plurality of crushing cutters (33) are arranged at a lower part of the rotating shaft (32)
and are evenly arranged around the rotating shaft (32).
-16-
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310189687.7A CN116106103B (en) | 2023-02-27 | 2023-02-27 | Testing device for shale sample residual gas |
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| LU504928B1 true LU504928B1 (en) | 2024-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| LU504928A LU504928B1 (en) | 2023-02-27 | 2023-08-17 | Test device for residual gas in shale samples |
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| LU (1) | LU504928B1 (en) |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5268106B2 (en) * | 2009-02-13 | 2013-08-21 | 一般財団法人電力中央研究所 | Gas sampling container |
| JP2014195769A (en) * | 2013-03-29 | 2014-10-16 | 株式会社エクォス・リサーチ | Heating crusher |
| CN203203897U (en) * | 2013-04-09 | 2013-09-18 | 中国石油化工股份有限公司 | Shale residual gas determining sample tank |
| CN203337429U (en) * | 2013-07-03 | 2013-12-11 | 中国科学院地质与地球物理研究所兰州油气资源研究中心 | Electromagnetic crushing degassing tank of high-vacuum rock ore sample |
| CN104122169B (en) * | 2014-08-08 | 2016-04-13 | 中国地质大学（武汉） | A kind of shale residual gas content test macro |
| CN104777073B (en) * | 2015-04-22 | 2017-05-17 | 中国石油大学(北京) | Device and method for measuring remnant gas amount |
| CN204988934U (en) * | 2015-06-08 | 2016-01-20 | 重庆泛嘉控股有限公司 | Shale residual gas volume tester |
| CN104914030B (en) * | 2015-07-06 | 2018-03-02 | 中国地质大学（北京） | The method of its measurement rock sample residue gas of whole airtight air content measuring apparatus and application |
| KR101819957B1 (en) * | 2017-09-15 | 2018-01-19 | 한국지질자원연구원 | Shale gas sampling device and that sample method |
| CN109946127B (en) * | 2019-03-04 | 2020-05-05 | 中国科学院南海海洋研究所 | Shale vacuum crusher |
| CN114646565A (en) * | 2020-12-18 | 2022-06-21 | 中国石油化工股份有限公司 | Method and device for analyzing residual gas in carbonate reservoir |
| CN115219380A (en) * | 2021-04-15 | 2022-10-21 | 中国石油天然气股份有限公司 | Device and method for measuring gas content of shale in closed crushing field |
| CN114660263B (en) * | 2022-03-07 | 2022-11-01 | 中国地质大学（北京） | Shale gas content measuring device |
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