CN112595284B - Special calibration device for shale dilatometer and installation method thereof - Google Patents
Special calibration device for shale dilatometer and installation method thereof Download PDFInfo
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- CN112595284B CN112595284B CN202110238173.7A CN202110238173A CN112595284B CN 112595284 B CN112595284 B CN 112595284B CN 202110238173 A CN202110238173 A CN 202110238173A CN 112595284 B CN112595284 B CN 112595284B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
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Abstract
The special calibration device for the shale expansion instrument and the installation method thereof comprise a shale expansion instrument body and a calibration assembly; the fixing piece is arranged on the shale expansion instrument body; a fixed groove, a first sealing groove and a second sealing groove are arranged in the fixed piece, and the sealing assembly is arranged on the fixed piece and seals the second sealing groove; the calibration assembly comprises a connecting piece, a measuring rod, a connecting cylinder, a sealing piece, an adjusting screw rod and an adjusting piece; one side of the connecting piece is connected with the connecting cylinder, the other side of the connecting piece is connected with the sealing piece, and the sealing piece is provided with a top block; the measuring rod is inserted into the connecting cylinder; the adjusting screw is arranged in the connecting cylinder; the adjusting screw rod is in threaded connection with the measuring rod; the measuring rod is provided with a guide rod; the connecting piece is inserted into the fixing groove, and the locking device is arranged on the fixing piece and fixes the connecting piece; the sealing member is inserted into the first sealing groove and blocks the second sealing groove, the top block jacks the sealing assembly, and the measuring rod extends into the shale expansion instrument body. The invention is convenient to assemble and disassemble and has excellent use effect.
Description
Technical Field
The invention relates to the technical field of shale dilatometers, in particular to a special calibration device for a shale dilatometer.
Background
The shale expansion instrument is a special instrument for evaluating the hydration expansion capacity of a shale sample in a drilling fluid or a treating agent solution, a testing cavity is arranged in the shale expansion instrument, the shale sample in the testing cavity is soaked by the drilling fluid or the treating agent and then expands along with the change of time, the expansion variable quantity is converted into an electric signal through a sensor, and the electric signal is processed by data to output the expansion quantity of the shale sample from a printer and an operation panel respectively; when the shale dilatometer is used, the shale dilatometer needs to be calibrated, and a special calibration device is generally needed to perform the calibration; the utility model discloses a calibrating device for solid volume expansion measuring instrument in the chinese utility model with publication number CN207610642U, which has a hollow base fixed on the front side cavity wall of the expansion measuring instrument testing cavity, the joint of the base and the cavity wall of the expansion measuring instrument testing cavity is sealed in the form of static sealing structure by a second ring-shaped sealing ring, a first ring-shaped sealing ring is sleeved in the cavity of the base, the rear screw of a pair of spiral micrometer heads is penetrated into the cavity of the base in the form of dynamic sealing structure from the first ring-shaped sealing ring, then the rear end thread of the screw is penetrated into the testing cavity of the expansion measuring instrument, a ratchet wheel is arranged in the front of the spiral micrometer head, the rear screw of the spiral micrometer head can be driven to reciprocate axially along the cavity of the base by the rotation of the ratchet wheel, the internal environment of the testing cavity of the expansion measuring instrument is not changed before and after the calibration, realize calibration many times, and then control random error, this calibrating device still possesses the volume simultaneously and increases and reduce the ability of calibration, but its simple structure is difficult to with its and shale dilatometer separation, and sealed effect is not good, and it is inconvenient to use, awaits improving.
Disclosure of Invention
Objects of the invention
In order to solve the technical problems in the background art, the invention provides the special calibration device for the shale expansion instrument and the installation method thereof, which are convenient to install and disassemble, time-saving and labor-saving in operation, good in sealing effect and excellent in use effect.
(II) technical scheme
The invention provides a special calibration device for a shale expansion instrument, which comprises a shale expansion instrument body, a fixing piece, a calibration assembly, a locking device and a sealing assembly, wherein the fixing piece is arranged on the shale expansion instrument body;
the fixing piece is arranged on the shale expansion instrument body, and a testing cavity is arranged in the shale expansion instrument body; a fixed groove, a first seal groove and a second seal groove are arranged in the fixed piece, the first seal groove is positioned between the second seal groove and the fixed groove, the second seal groove is communicated with the test cavity, and the seal assembly is arranged on the fixed piece and seals the second seal groove;
the calibration assembly comprises a connecting piece, a measuring rod, a connecting cylinder, a sealing piece, an adjusting screw rod and an adjusting piece; one side of the connecting piece is connected with the connecting cylinder, the other side of the connecting piece is connected with the sealing piece, and the sealing piece is provided with a top block; the measuring rod is transversely arranged, penetrates through the top block, the sealing element and the connecting piece and is inserted into the connecting cylinder; the adjusting screw rod is transversely arranged in the connecting cylinder and is rotationally connected with the connecting cylinder, and the adjusting piece is connected with the adjusting screw rod; the measuring rod is provided with a thread groove, and the adjusting screw rod is in threaded connection with the measuring rod; the measuring rod is provided with a guide rod which is positioned in the connecting cylinder and is connected with the connecting cylinder in a sliding way;
the connecting piece is inserted into the fixing groove, and the locking device is arranged on the fixing piece and fixes the connecting piece; the sealing member is inserted into the first sealing groove and blocks the second sealing groove, the top block jacks the sealing assembly, and the measuring rod extends into a testing cavity in the shale expansion instrument body.
Preferably, the guide rod is provided with a guide block, a guide groove is transversely arranged in the connecting cylinder, and the guide block is positioned in the guide groove and is in sliding connection with the connecting cylinder.
Preferably, the locking device comprises a limiting cylinder, a locking rod, a first sliding part, a first spring and an electromagnet;
the limiting cylinder is arranged on the fixing piece, and the first sliding piece is arranged in the limiting cylinder; the electromagnet is arranged in the limiting cylinder, and the first sliding piece is correspondingly provided with an iron sheet; the locking rod is vertically arranged on the first sliding part, the connecting piece is provided with a clamping groove, and the locking rod penetrates through the limiting cylinder and is inserted into the clamping groove; the first spring is sleeved on the locking rod and connected with the first sliding part and the limiting cylinder.
Preferably, the number of locking means is a plurality of groups and is distributed in an annular array around the fixing member.
Preferably, the sealing assembly comprises a second slider, a second spring, a connecting rod and a trapezoidal block;
an upper group of limiting grooves and a lower group of limiting grooves are arranged in the fixing piece, and the two limiting grooves are respectively communicated with the second sealing groove; the second sliding part is arranged in the limiting groove, and the second spring is vertically arranged in the limiting groove and is connected with the second sliding part and the fixing part; the connecting rod is vertically arranged on the second sliding piece, and the trapezoidal block is arranged on the connecting rod and extends into the second sealing groove; the two trapezoidal blocks abut against each other and seal the second sealing groove, and one side of each trapezoidal block facing the top block is an inclined plane.
Preferably, the trapezoidal block located above is provided with an inserting plate, the trapezoidal block located below is provided with a slot, and the trapezoidal block is inserted into the slot.
Preferably, the outer peripheral surface of the sealing element is provided with a wear-resistant sealing ring, and the wear-resistant sealing ring is propped against the fixing element.
Preferably, the device further comprises a graduated scale; a transparent window is transversely arranged on the connecting cylinder, and the graduated scale is transversely arranged on the transparent window.
Preferably, the device also comprises a pointer; the pointer is arranged on the measuring rod and positioned in the connecting cylinder, and the pointer points to the graduated scale.
The invention also provides an installation method of the special calibration device for the shale expansion instrument, which comprises the following steps:
s1, electrifying the electromagnet, adsorbing the iron sheet by the electromagnet through magnetic attraction, moving the first sliding part and drawing the locking rod into the limiting cylinder, wherein the first spring is in a stretching state;
s2, inserting the sealing element into the first sealing groove, extruding the trapezoidal blocks into the limiting groove by the top block, sealing the second sealing groove by the two trapezoidal blocks, and blocking the second sealing groove by the sealing element;
s3, the electromagnet is powered off, the first spring pulls the first sliding part, and the locking rod penetrates through the limiting cylinder and is inserted into the clamping groove to fix the connecting piece;
and S4, rotating the adjusting piece to enable the adjusting screw rod to rotate, enabling the measuring rod to move transversely under the guiding action of the guide rod, and finally enabling the measuring rod to penetrate through the second sealing groove and extend into the testing cavity of the shale expansion instrument body to complete the installation operation.
The technical scheme of the invention has the following beneficial technical effects:
during installation, the sealing element is inserted into the first sealing groove, the top block extrudes the trapezoidal block into the limiting groove, the electromagnet is powered off, the first spring pulls the first sliding element, the locking rod penetrates out of the limiting cylinder and is inserted into the clamping groove, and the connecting element is fixed; the adjusting screw rod is rotated by rotating the adjusting piece, the measuring rod transversely moves under the guiding action of the guide rod and extends into the testing cavity of the shale expansion instrument body, the installation operation of the calibration assembly is completed, the operation is time-saving and labor-saving, the sealing effect is good, and the use is facilitated;
when dismantling the calibration subassembly, the kicking block is taken out from the second seal groove, and the second spring resets and promotes two second sliders and move in opposite directions, and two trapezoidal pieces move thereupon, and finally two trapezoidal pieces support again and press together and seal the second seal groove, can not bring adverse effect to the detection operation of shale dilatometer, and the convenience is carried out the dismouting to the calibration subassembly, and the result of use is splendid.
Drawings
Fig. 1 is a schematic structural diagram of a calibration device specially used for a shale expansion instrument according to the present invention.
Fig. 2 is a front view of a calibration assembly in the calibration device specially used for the shale expansion instrument.
Fig. 3 is an enlarged view of a portion a in fig. 1.
Fig. 4 is an enlarged view of a portion B in fig. 1.
Fig. 5 is an enlarged view of a portion C in fig. 1.
Reference numerals: 1. a shale dilatometer body; 2. a fixing member; 3. a connecting member; 4. a measuring rod; 5. a connecting cylinder; 6. a seal member; 7. a top block; 8. adjusting the screw rod; 9. an adjustment member; 10. a guide bar; 11. a guide groove; 12. a guide block; 13. a graduated scale; 14. a card slot; 15. fixing grooves; 16. a first seal groove; 17. a second seal groove; 18. a limiting cylinder; 19. a locking lever; 20. a first slider; 21. a first spring; 22. an electromagnet; 23. iron sheets; 24. a limiting groove; 25. a second slider; 26. a second spring; 27. a connecting rod; 28. a trapezoidal block; 29. inserting plates; 30. and (4) a slot.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
As shown in fig. 1 to 5, the calibration device specially used for the shale expansion instrument provided by the invention comprises a shale expansion instrument body 1, a fixing piece 2, a calibration assembly, a locking device and a sealing assembly;
the fixing piece 2 is arranged on the shale expansion instrument body 1, and a testing cavity is arranged in the shale expansion instrument body 1; a fixed groove 15, a first seal groove 16 and a second seal groove 17 are arranged in the fixed part 2, the first seal groove 16 is positioned between the second seal groove 17 and the fixed groove 15, the second seal groove 17 is communicated with the test cavity, and the seal assembly is arranged on the fixed part 2 and seals the second seal groove 17;
the sealing assembly comprises a second slider 25, a second spring 26, a connecting rod 27 and a trapezoidal block 28; an upper group of limiting grooves 24 and a lower group of limiting grooves 24 are formed in the fixing piece 2, and the two limiting grooves 24 are respectively communicated with the second sealing groove 17; the second sliding part 25 is arranged in the limit groove 24, and the second spring 26 is vertically arranged in the limit groove 24 and is connected with the second sliding part 25 and the fixed part 2; a connecting rod 27 is vertically arranged on the second sliding part 25, and a trapezoidal block 28 is arranged on the connecting rod 27 and extends into the second sealing groove 17; the two trapezoidal blocks 28 are abutted against each other and seal the second seal groove 17, and one side of the trapezoidal block 28 facing the top block 7 is an inclined surface;
the calibration assembly comprises a connecting piece 3, a measuring rod 4, a connecting cylinder 5, a sealing piece 6, an adjusting screw rod 8 and an adjusting piece 9; one side of the connecting piece 3 is connected with the connecting cylinder 5, the other side of the connecting piece 3 is connected with the sealing piece 6, and the sealing piece 6 is provided with a top block 7; the measuring rod 4 is transversely arranged, and the measuring rod 4 penetrates through the top block 7, the sealing element 6 and the connecting piece 3 and is inserted into the connecting cylinder 5; the adjusting screw 8 is transversely arranged in the connecting cylinder 5 and is rotationally connected with the connecting cylinder, and the adjusting piece 9 is connected with the adjusting screw 8; the measuring rod 4 is provided with a thread groove, and the adjusting screw 8 is in threaded connection with the measuring rod 4; the measuring rod 4 is provided with a guide rod 10, and the guide rod 10 is positioned in the connecting cylinder 5 and is in sliding connection with the connecting cylinder;
the connecting piece 3 is inserted into the fixing groove 15, and the locking device is arranged on the fixing piece 2 and fixes the connecting piece 3; the sealing element 6 is inserted into the first sealing groove 16 and blocks the second sealing groove 17, the top block 7 pushes the sealing assembly open, and the measuring rod 4 extends into a testing cavity in the shale expansion instrument body 1;
the number of the locking devices is multiple, the locking devices are distributed around the fixing piece 2 in an annular array, and the locking devices comprise a limiting cylinder 18, a locking rod 19, a first sliding piece 20, a first spring 21 and an electromagnet 22; the limiting cylinder 18 is arranged on the fixed part 2, and the first sliding part 20 is arranged in the limiting cylinder 18; the electromagnet 22 is arranged in the limiting cylinder 18, and the first sliding part 20 is correspondingly provided with an iron sheet 23; the locking rod 19 is vertically arranged on the first sliding part 20, the clamping groove 14 is formed in the connecting piece 3, and the locking rod 19 penetrates through the limiting cylinder 18 and is inserted into the clamping groove 14; the first spring 21 is sleeved on the locking rod 19 and connected with the first sliding part 20 and the limiting cylinder 18.
In an alternative embodiment, the guide rod 10 is provided with a guide block 12, a guide groove 11 is transversely arranged in the connecting cylinder 5, and the guide block 12 is positioned in the guide groove 11 and is slidably connected with the connecting cylinder 5. During the adjustment process, the guide block 12 slides along the guide groove 11 to play a guiding role.
In an alternative embodiment, the upper trapezoidal blocks 28 are provided with insertion plates 29, the lower trapezoidal blocks 28 are provided with insertion grooves 30, and the trapezoidal blocks 28 are inserted into the insertion grooves 30. In operation, after the calibration assembly is removed, the two trapezoidal blocks 28 move and abut against each other, and the insert plate 29 is inserted into the slot 30, so that the sealing effect on the second sealing groove 17 is remarkably improved.
In an alternative embodiment, the outer circumferential surface of the sealing element 6 is provided with a wear-resistant sealing ring, and the wear-resistant sealing ring abuts against the fixing element 2, which helps to improve the sealing effect.
In an alternative embodiment, a graduated scale 13 and a pointer are also included; a transparent window is transversely arranged on the connecting cylinder 5, and the graduated scale 13 is transversely arranged on the transparent window; the pointer is arranged on the measuring rod 4 and positioned in the connecting cylinder 5, and the pointer points to the graduated scale 13. In the work, when adjusting the extension length of measuring staff 4, the pointer moves thereupon, and pointer point to scale 13 conveniently reads the extension length of measuring staff 4, easy operation, excellent in use effect.
The invention also provides an installation method of the special calibration device for the shale expansion instrument, which comprises the following steps:
s1, electrifying the electromagnet 22, adsorbing the iron sheet 23 by the electromagnet 22 through magnetic attraction, moving the first sliding part 20 and drawing the locking rod 19 into the limiting cylinder 18, wherein the first spring 21 is in a stretching state;
s2, the sealing element 6 is inserted into the first sealing groove 16, the top block 7 extrudes the trapezoidal blocks 28 into the limiting groove 24, the two trapezoidal blocks 28 do not seal the second sealing groove 17, and the sealing element 6 blocks the second sealing groove 17;
s3, the electromagnet 22 is powered off, the first spring 21 pulls the first sliding part 20, and the locking rod 19 penetrates through the limiting cylinder 18 and is inserted into the clamping groove 14 to fix the connecting piece 3;
and S4, rotating the adjusting piece 9 to enable the adjusting screw 8 to rotate, enabling the measuring rod 4 to move transversely under the guiding action of the guide rod 10, and finally enabling the measuring rod 4 to penetrate through the second sealing groove 17 and extend into the testing cavity of the shale expansion instrument body 1 to complete the installation operation.
In the invention, when the device is used, the electromagnet 22 is electrified, the electromagnet 22 adsorbs the iron sheet 23 through magnetic attraction, the first sliding piece 20 moves and pulls the locking rod 19 into the limiting cylinder 18, and at the moment, the first spring 21 is in a stretching state; then the sealing element 6 is inserted into the first sealing groove 16, the top block 7 presses the trapezoidal blocks 28 into the limiting groove 24, the two trapezoidal blocks 28 do not seal the second sealing groove 17, at the moment, the sealing element 6 blocks the second sealing groove 17, and the second spring 26 is in a compressed state; then the electromagnet 22 is powered off, the first spring 21 pulls the first sliding part 20, and the locking rod 19 penetrates through the limiting cylinder 18 and is inserted into the clamping groove 14 to fix the connecting piece 3; finally, the adjusting piece 9 is rotated to enable the adjusting screw rod 8 to rotate, the measuring rod 4 transversely moves under the guiding action of the guide rod 10, and finally the measuring rod 4 penetrates through the second sealing groove 17 and extends into the testing cavity of the shale expansion instrument body 1 to complete the installation operation of the calibration assembly, so that the operation is time-saving and labor-saving, the sealing effect is good, and the use is facilitated;
when dismantling the calibration subassembly, the kicking block 7 is taken out from second seal groove 17, and second spring 26 resets and promotes two second sliders 25 and carries out the motion in opposite directions, and two trapezoidal pieces 28 move thereupon, and two trapezoidal pieces 28 finally support again and press together and seal second seal groove 17, can not bring adverse effect to the detection operation of shale dilatometer, conveniently carry out the dismouting to the calibration subassembly, and the result of use is splendid.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (8)
1. The special calibration device for the shale expansion instrument is characterized by comprising a shale expansion instrument body (1), a fixing piece (2), a calibration assembly, a locking device and a sealing assembly;
the fixing piece (2) is arranged on the shale expansion instrument body (1), and a testing cavity is arranged in the shale expansion instrument body (1); a fixed groove (15), a first seal groove (16) and a second seal groove (17) are arranged in the fixed piece (2), the first seal groove (16) is positioned between the second seal groove (17) and the fixed groove (15), the second seal groove (17) is communicated with the test cavity, and the seal assembly is arranged on the fixed piece (2) and seals the second seal groove (17);
the calibration assembly comprises a connecting piece (3), a measuring rod (4), a connecting cylinder (5), a sealing piece (6), an adjusting screw rod (8) and an adjusting piece (9); one side of the connecting piece (3) is connected with the connecting cylinder (5), the other side of the connecting piece (3) is connected with the sealing piece (6), and the sealing piece (6) is provided with a top block (7); the measuring rod (4) is transversely arranged, and the measuring rod (4) penetrates through the ejector block (7), the sealing element (6) and the connecting piece (3) and is inserted into the connecting cylinder (5); the adjusting screw rod (8) is transversely arranged in the connecting cylinder (5) and is rotationally connected with the connecting cylinder, and the adjusting piece (9) is connected with the adjusting screw rod (8); the measuring rod (4) is provided with a thread groove, and the adjusting screw rod (8) is in threaded connection with the measuring rod (4); the measuring rod (4) is provided with a guide rod (10), and the guide rod (10) is positioned in the connecting cylinder (5) and is in sliding connection with the connecting cylinder;
the connecting piece (3) is inserted into the fixing groove (15), and the locking device is arranged on the fixing piece (2) and fixes the connecting piece (3); the sealing element (6) is inserted into the first sealing groove (16) and blocks the second sealing groove (17), the top block (7) backs up the sealing assembly, and the measuring rod (4) extends into a testing cavity in the shale dilatometer body (1);
the locking device comprises a limiting cylinder (18), a locking rod (19), a first sliding part (20), a first spring (21) and an electromagnet (22);
the limiting cylinder (18) is arranged on the fixing piece (2), and the first sliding piece (20) is arranged in the limiting cylinder (18); the electromagnet (22) is arranged in the limiting cylinder (18), and the first sliding piece (20) is correspondingly provided with an iron sheet (23); the locking rod (19) is vertically arranged on the first sliding part (20), the clamping groove (14) is formed in the connecting piece (3), and the locking rod (19) penetrates through the limiting cylinder (18) and is inserted into the clamping groove (14); the first spring (21) is sleeved on the locking rod (19) and is connected with the first sliding part (20) and the limiting cylinder (18);
the sealing assembly comprises a second slider (25), a second spring (26), a connecting rod (27) and a trapezoidal block (28);
an upper group of limiting grooves (24) and a lower group of limiting grooves (24) are arranged in the fixing piece (2), and the two limiting grooves (24) are respectively communicated with the second sealing groove (17); the second sliding part (25) is arranged in the limiting groove (24), and the second spring (26) is vertically arranged in the limiting groove (24) and is connected with the second sliding part (25) and the fixing part (2); the connecting rod (27) is vertically arranged on the second sliding part (25), and the trapezoidal block (28) is arranged on the connecting rod (27) and extends into the second sealing groove (17); the two trapezoidal blocks (28) are mutually abutted and seal the second sealing groove (17), and one side of the trapezoidal block (28) facing the top block (7) is an inclined surface.
2. The special calibrating device for the shale expansion instrument according to claim 1, wherein a guide block (12) is arranged on the guide rod (10), a guide groove (11) is transversely arranged in the connecting cylinder (5), and the guide block (12) is positioned in the guide groove (11) and is in sliding connection with the connecting cylinder (5).
3. The shale expansion instrument dedicated calibration apparatus of claim 1, wherein the number of locking devices is multiple and is distributed in a circular array around the fixing member (2).
4. The special calibration device for the shale expansion instrument according to claim 1, wherein an inserting plate (29) is arranged on the upper trapezoidal block (28), a slot (30) is arranged on the lower trapezoidal block (28), and the trapezoidal block (28) is inserted into the slot (30).
5. The special calibration device for the shale expansion instrument according to claim 1, wherein the outer peripheral surface of the sealing element (6) is provided with a wear-resistant sealing ring, and the wear-resistant sealing ring is pressed against the fixing element (2).
6. The shale dilatometer specific calibration device as claimed in claim 1, further comprising a graduated scale (13); a transparent window is transversely arranged on the connecting cylinder (5), and the graduated scale (13) is transversely arranged on the transparent window.
7. The shale dilatometer specific calibration device as claimed in claim 6, further comprising a pointer; the pointer is arranged on the measuring rod (4) and positioned in the connecting cylinder (5), and the pointer points to the graduated scale (13).
8. A method for installing the calibration device specially used for the shale expansion instrument according to any one of claims 1-7, characterized by comprising the following steps:
s1, electrifying the electromagnet (22), adsorbing the iron sheet (23) by the electromagnet (22) through magnetic attraction, moving the first sliding part (20) and drawing the locking rod (19) into the limiting cylinder (18), wherein the first spring (21) is in a stretching state;
s2, the sealing element (6) is inserted into the first sealing groove (16), the top block (7) extrudes the trapezoidal blocks (28) into the limiting groove (24), the two trapezoidal blocks (28) do not seal the second sealing groove (17), and the sealing element (6) blocks the second sealing groove (17);
s3, the electromagnet (22) is powered off, the first sliding piece (20) is pulled by the first spring (21), the locking rod (19) penetrates through the limiting cylinder (18) and is inserted into the clamping groove (14), and the connecting piece (3) is fixed;
s4, rotating the adjusting piece (9) to enable the adjusting screw rod (8) to rotate, enabling the measuring rod (4) to move transversely under the guiding action of the guide rod (10), and finally enabling the measuring rod (4) to penetrate through the second sealing groove (17) and extend into the testing cavity of the shale expansion instrument body (1) to complete installation operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110238173.7A CN112595284B (en) | 2021-03-04 | 2021-03-04 | Special calibration device for shale dilatometer and installation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110238173.7A CN112595284B (en) | 2021-03-04 | 2021-03-04 | Special calibration device for shale dilatometer and installation method thereof |
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| CN112595284B true CN112595284B (en) | 2021-05-28 |
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