CN116819007A - Test system and method for testing expansion pressure and expansion deformation in pipe - Google Patents
Test system and method for testing expansion pressure and expansion deformation in pipe Download PDFInfo
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- CN116819007A CN116819007A CN202310787453.2A CN202310787453A CN116819007A CN 116819007 A CN116819007 A CN 116819007A CN 202310787453 A CN202310787453 A CN 202310787453A CN 116819007 A CN116819007 A CN 116819007A
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- 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
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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
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/30—Measuring arrangements characterised by the use of mechanical techniques for measuring the deformation in a solid, e.g. mechanical strain gauge
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/16—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring several components of force
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
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Abstract
The invention discloses a test system and a method for testing expansion pressure and expansion deformation in a pipe, wherein the test system comprises the following steps: the steel frame base, be fixed with two symmetrical steelframe stands on the top surface of steelframe base, every the top of steelframe stand all runs through and is provided with a plurality of equidistance fixed orifices of arranging. In the device, the throughput wheel is used as a deformation quantity transmission medium, the measuring wheel is initially propped against the side wall of the test tube which is not deformed, overpressure is generated, the stress column overcomes the elastic force of the spring II, pushes the measuring end part of the digital display dial indicator, records the initial data value of the digital display dial indicator, drives the radial deformation measuring mechanism to conduct sectional movement through the sliding table module after the expansion of the test tube is finished, records the data value change of the digital display dial indicator, and subtracts the initial data value from the data value, so that the expansion deformation quantity of the test tube is obtained.
Description
Technical Field
The invention particularly relates to the technical field of in-tube expansion deformation measurement, in particular to a test system and a test method for testing in-tube expansion pressure and expansion deformation.
Background
The expanding agent is widely applied to the fields of constructional engineering, road construction, hydraulic engineering and the like, the strength stability of concrete can be greatly improved, the expanding agent is required to be filled into a test vessel in the expansion test process of the expanding agent, the deformation of the vessel is observed and recorded, in a conventional test method, please refer to fig. 8, the measuring end part of a dial indicator is abutted against the set position of the test vessel by adjusting a mechanical arm, so that the deformation of the test vessel is measured, but due to the difference of deformation, the deformation area has gradient, the measuring end part of the dial indicator is abutted against the slope of the deformation area easily, the value of the deformation cannot be accurately obtained, and if the dial indicator is adjusted again, the test step is increased, and the adjustment is tedious and time-consuming.
Disclosure of Invention
Therefore, the invention provides a test system and a test method for testing the expansion pressure and the expansion deformation in a pipe, so as to solve the problems in the background art.
In order to achieve the above purpose, the present invention provides the following technical solutions: a test system for testing inflation pressure and inflation deformation in a tube, comprising:
the steel frame comprises a steel frame base, wherein two symmetrical steel frame upright posts are fixed on the top surface of the steel frame base, and a plurality of fixing holes which are arranged at equal intervals are formed in the top of each steel frame upright post in a penetrating manner;
the pre-loading oil cylinder is fixed on the steel frame base and is positioned on the symmetrical line of the two steel frame upright posts, a sealing tray is fixed on the driving end of the pre-loading oil cylinder, and the bottom end of the test tube can be installed on the sealing tray in a sealing manner;
the sliding table module is fixedly arranged on one side, opposite to the steel frame upright columns, of each sliding table module, an electric cylinder is fixedly arranged on a moving block of each sliding table module, a mounting plate is fixedly arranged on a driving end of each electric cylinder, and at least two radial deformation measuring mechanisms are fixedly arranged on an inward end face of each mounting plate;
and the top beam is arranged between the two steel frame upright posts and is fixed at a set fixing hole by adopting a locking screw, one end of a pressure-bearing steel pipe is fixed at the central position of the bottom surface of the top beam, a pressure measuring mechanism is fixed at the other end of the pressure-bearing steel pipe, and the pressure measuring mechanism can extend into the test pipe to carry out pressure detection.
Further, preferably, the pressure measuring mechanism is composed of an axial pressure measuring component and a radial pressure measuring component mounted at the bottom of the axial pressure measuring component, wherein the axial pressure measuring component can measure the axial pressure value in the test tube, and the radial pressure measuring component can measure the radial pressure value in the test tube.
Further, preferably, the axial pressure measurement assembly includes
The pressure-bearing sleeve head is fixedly sleeved at the bottom end of the pressure-bearing steel pipe;
the top end of the pressure-bearing column head is fixedly embedded in the bottom end opening of the pressure-bearing sleeve head;
and the axial pressure sensor is connected between the pressure-bearing column head and the piston.
Further, preferably, a second sealing ring is sleeved on the side wall of the pressure-bearing sleeve head in a matching manner, and a first sealing ring is sleeved on the side wall of the piston in a matching manner.
Further, preferably, the radial pressure measurement assembly comprises
The bearing sleeve head is fixedly sleeved at the bottom end of the piston;
the top end of the vertical rod is fixed at the central position of the bottom surface of the bearing sleeve head, the bottom end of the vertical rod is fixedly provided with a fixed seat, the left end and the right end of the fixed seat are respectively fixedly provided with one end of an elastic rod piece, and the other end of each elastic rod piece is fixedly provided with a radial pressure sensor through a connecting handle;
and the sliding ring is slidably sleeved on the side wall of the vertical rod, one end of the inclined rod is hinged to the left end and the right end of the sliding ring, and the other end of each inclined rod is hinged to the elastic rod piece corresponding to the inclined rod.
Further, preferably, the elastic rod member is composed of an external cylinder, a first spring, an internal connecting rod and a sliding block, wherein one end of the external cylinder is fixed on the fixed seat, the external cylinder is internally provided with the sliding block in a matched sliding manner, the sliding block is connected with one end of the internal connecting rod, the other end of the internal connecting rod penetrates through the other end wall of the external cylinder and extends out, and the extending end of the internal connecting rod is hinged with the inclined rod;
the spring is connected between the sliding block and the inner wall of the external cylinder.
Further, preferably, the radial deformation measuring mechanism includes
The measuring shell is fixed on the mounting plate, and two digital display dial indicators are fixedly arranged on the inner side wall of the measuring shell;
the two side plates are arranged, and the front and the rear of the two side plates are symmetrically arranged on the side wall of the measuring shell;
and the radial deformation quantity transmission assemblies are arranged in two, each radial deformation quantity transmission assembly is arranged between two side plates, and the tail ends of the radial deformation quantity transmission assemblies penetrate into the measuring shell and can transmit the deformation quantity of the test tube to the digital display dial indicator.
Further, preferably, the radial deformation transmission assembly includes
The shaft rod is matched and slidingly connected between the limit grooves of the two side plates, and two ends of the shaft rod extend out and are fixedly connected with the limit blocks;
the measuring wheel is fixedly arranged in the middle of the shaft lever;
the first rotating ring is rotatably sleeved at the front part of the shaft rod, and a compression bar is fixed on the side wall of the first rotating ring;
the other end of the stress column penetrates into the measuring shell and is propped against the measuring end part of the digital display dial indicator, and a limiting ring is fixedly sleeved on part of the stress column positioned in the measuring shell;
and the second spring is sleeved on the side wall of the stress column and is connected between the pressure rod and the measuring shell.
Further, preferably, the rear parts of the two shaft rods are rotatably sleeved with two swivel rings, a telescopic rod is connected between the two swivel rings, and an angle sensor is fixedly installed on the side wall of the telescopic rod.
A test method for testing expansion pressure and expansion deformation in a pipe comprises the following steps:
step 1: the bottom end of the test tube is sealed and installed on a sealing tray, and the tightness of the test tube is checked;
step 2: filling an expanding reagent into a test tube, adjusting a top beam to a set height after the expanding reagent is stable, manually pressing two inclined rods to convert a radial pressure measuring assembly into an adduction state so that the axial pressure measuring assembly and the radial pressure measuring assembly extend into the test tube, and driving the test tube to a set position through a preloading oil cylinder;
step 3: the radial deformation measuring mechanism is driven to move to a set height through the sliding table module, then the radial deformation measuring mechanism is driven to move towards the direction of the test tube through the electric cylinder until the measuring wheel abuts against the side wall of the test tube, and the data value of the digital display dial indicator at the moment is recorded;
step 4: the expansion reagent in the tube to be tested reacts to generate expansion pressure, and the data values of the axial pressure sensor and the radial pressure sensor in the tube to be tested are recorded in a time-sharing manner until the reaction is finished;
step 5: the sliding table module drives the radial deformation measuring mechanism to move in a sectional mode, and data values of the digital display dial indicator and the angle sensor are recorded, so that deformation and deformation gradient of the test tube are calculated.
Step 6: after the test is completed, the radial deformation measuring mechanism is driven by the electric cylinder to move to an initial position, the top beam is dismounted, the axial pressure measuring assembly and the radial pressure measuring assembly are withdrawn from the test tube and cleaned, and finally, the test tube is taken down.
Compared with the prior art, the invention has the following beneficial effects:
1. the device is provided with a pressure measuring mechanism, which consists of an axial pressure measuring component and a radial pressure measuring component, wherein the axial pressure measuring component can measure an axial pressure value in a test tube, the radial pressure measuring component can measure a radial pressure value in the test tube, a pressure bearing column head in the axial pressure measuring component can bear pressure in a concentrated manner, and the pressure is transmitted to an axial pressure sensor, so that the accuracy of expansion data is improved; the radial pressure measurement assembly drives the whole radial pressure measurement assembly to rotate in a collaborative state through the inclined rod, and because of different local expansion deformation of the expansion reagent, if the expansion reagent squeezes and pushes the radial pressure sensors, the inclined rod can enable the two radial pressure sensors to move in the same direction or synchronously and statically, so that the radial pressure sensors are not squeezed and are separated from a set position, and larger errors in radial pressure measurement are avoided.
2. In the device, a throughput wheel is used as a deformation quantity transmission medium, the throughput wheel is initially propped against the side wall of a test tube which is not deformed, overpressure is generated, a stress column overcomes the elasticity of a spring II and pushes the measuring end part of a digital display dial indicator, the initial data value of the digital display dial indicator is recorded, after the expansion of the test tube is finished, a sliding table module drives a radial deformation measuring mechanism to perform sectional movement, the data value change of the digital display dial indicator is recorded, and the initial data value is subtracted from the data value, so that the expansion deformation quantity of the test tube is obtained;
and two measuring wheels are propped against the deformation area of the test tube, and the deformation area has gradient due to different deformation amounts, so that the gradient change value of the deformation area can be obtained through the angle change between the two measuring wheels.
Drawings
FIG. 1 is a schematic diagram of a test system for measuring inflation pressure and inflation deformation in a test tube;
FIG. 2 is a schematic diagram showing the internal structure of an axial pressure measuring assembly in a test system for testing the expansion pressure and expansion deformation in a pipe;
FIG. 3 is a schematic view of a radial pressure measurement assembly in a test system for testing the expansion pressure and expansion deformation in a pipe;
FIG. 4 is a schematic structural view of a radial deformation measuring mechanism in a test system for measuring expansion pressure and expansion deformation in a test tube;
FIG. 5 is a schematic front view of the inside of the radial deformation measuring mechanism in a test system for measuring the expansion pressure and expansion deformation in a test tube;
FIG. 6 is a schematic view of the inside of the back of the radial deformation measuring mechanism in a test system for measuring the expansion pressure and expansion deformation in a test tube;
FIG. 7 is a pictorial view of an axial pressure measurement assembly in a test system for testing the expansion pressure and expansion deformation in a pipe;
fig. 8 is a conventional schematic diagram of a test tube deformation measurement.
In the figure: 1. a pressure-bearing steel pipe; 2. a top beam; 3. locking a screw; 4. a steel frame upright post; 5. a mounting plate; 6. a radial deformation measuring mechanism; 7. a test tube; 8. a steel frame base; 9. preloading an oil cylinder; 10. an electric cylinder; 11. a slipway module; 12. a pressure-bearing sleeve head; 13. a piston; 14. a first sealing ring; 15. an axial pressure sensor; 16. a pressure-bearing column head; 17. a second sealing ring; 18. receiving a sleeve head; 19. a vertical rod; 20. a slip ring; 21. a slide block; 22. a connecting handle; 23. a first spring; 24. a fixing seat; 25. an inner connecting rod; 26. a radial pressure sensor; 27. a diagonal rod; 601. a measurement housing; 602. a limit groove; 603. a limiting block; 604. a measuring wheel; 605. a side plate; 606. a digital display dial gauge; 607. a compression bar; 608. a shaft lever; 609. a swivel I; 610. a second spring; 611. a limiting ring; 612. a stress column; 613. an angle sensor; 614. a telescopic rod; 615. and a second swivel.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Examples: referring to fig. 1-7, the present invention provides a technical solution: a test system for testing inflation pressure and inflation deformation in a tube, comprising:
the steel frame base 8, two symmetrical steel frame upright posts 4 are fixed on the top surface of the steel frame base 8, and a plurality of fixing holes which are arranged at equal intervals are formed in the top of each steel frame upright post 4 in a penetrating manner;
the pre-loading oil cylinder 9, the pre-loading oil cylinder 9 is fixed on the steel frame base 8 and is positioned on the symmetrical line of the two steel frame upright posts 4, a sealing tray is fixed on the driving end of the pre-loading oil cylinder 9, and the bottom end of the test tube 7 can be installed on the sealing tray in a sealing way;
the sliding table module 11 is fixedly arranged on one side, opposite to the two steel frame upright posts 4, of each sliding table module 11, the electric cylinder 10 is fixedly arranged on a moving block of each sliding table module 11, the mounting plate 5 is fixedly arranged on the driving end of each electric cylinder 10, and at least two radial deformation measuring mechanisms 6 are fixedly arranged on the inward end face of the mounting plate 5;
and the top beam 2 is arranged between the two steel frame upright posts 4, and is fixed at a set fixing hole by adopting a locking screw 3, one end of a pressure-bearing steel pipe 1 is fixed at the central position of the bottom surface of the top beam 2, a pressure measuring mechanism is fixed at the other end of the pressure-bearing steel pipe 1, and the pressure measuring mechanism can extend into a test pipe 7 for pressure detection.
In this embodiment, the pressure measuring mechanism is composed of an axial pressure measuring component and a radial pressure measuring component mounted at the bottom of the axial pressure measuring component, wherein the axial pressure measuring component can measure the axial pressure value in the test tube 7, and the radial pressure measuring component can measure the radial pressure value in the test tube 7.
In this embodiment, the axial pressure measurement assembly includes
The pressure-bearing sleeve head 12 is fixedly sleeved at the bottom end of the pressure-bearing steel pipe 1;
the top end of the pressure-bearing column head 16 is fixedly embedded in the bottom end opening of the pressure-bearing sleeve head 12;
and an axial pressure sensor 15, the axial pressure sensor 15 being connected between the pressure-bearing stud 16 and the piston 13;
specifically, the bearing column heads 16 can intensively bear pressure, and transmit the pressure to the axial pressure sensor 15, so that the accuracy of expansion data is improved.
In this embodiment, the side wall of the pressure-bearing sleeve head 12 is provided with a second sealing ring 17 in a matching manner, and the side wall of the piston 13 is provided with a first sealing ring 14 in a matching manner, so that the tightness is improved, and the reagent is isolated.
In this embodiment, the radial pressure measurement assembly includes
The bearing sleeve head 18 is fixedly sleeved at the bottom end of the piston 13;
the top end of the vertical rod 19 is fixed at the center of the bottom surface of the bearing sleeve head 18, the bottom end of the vertical rod 19 is fixed with a fixed seat 24, the left end and the right end of the fixed seat 24 are both fixed with one ends of elastic rod pieces, and the other end of each elastic rod piece is fixedly provided with a radial pressure sensor 26 through a connecting handle 22;
the sliding ring 20 is slidably sleeved on the side wall of the vertical rod 19, one end of each inclined rod 27 is hinged to the left and right ends of the sliding ring 20, and the other end of each inclined rod 27 is hinged to the corresponding elastic rod piece;
specifically, by manually pressing the inclined rods 27, due to the limiting action of the slip ring 20, the two inclined rods 27 are simultaneously displaced to form an adduction state, so that the two elastic rod pieces are contracted, are convenient to extend into the test tube, and bring the radial pressure sensor 26 into the test tube;
if the expansion agent pushes the radial pressure sensors, the diagonal rod 27 can make the two radial pressure sensors 26 move in the same direction or be stationary synchronously, so that the radial pressure sensors 26 can be ensured not to be pushed and to be separated from the set position.
In this embodiment, the elastic rod member is composed of an external cylinder, a first spring 23, an internal rod 25 and a sliding block 21, wherein one end of the external cylinder is fixed on a fixed seat 24, the sliding block 21 is arranged in the external cylinder in a matched sliding manner, the sliding block 21 is connected with one end of the internal rod 25, the other end of the internal rod 25 passes through the other end wall of the external cylinder and extends out, and the extending end of the internal rod 25 is hinged with an inclined rod 27;
the first spring 23 is connected between the slider 21 and the inner wall of the external cylinder.
In the present embodiment, the radial deformation measuring mechanism 6 includes
The measuring shell 601 is made of transparent materials, the measuring shell 601 is fixed on the mounting plate 5, and two digital display dial indicators 606 are fixedly arranged on the inner side wall of the measuring shell 601;
the side plates 605, the side plates 605 are two, and the two side plates 605 are arranged on the side wall of the measuring shell 601 in a front-back symmetrical way;
and radial deformation volume transmission subassembly, radial deformation volume transmission subassembly is provided with two, and every radial deformation volume transmission subassembly all sets up between two curb plates 605, and radial deformation volume transmission subassembly's end all penetrates in measuring the casing 601 to can pass the deformation volume of test tube 7 to digital display amesdial 606.
In this embodiment, the radial deformation transmission assembly includes
The shaft lever 608 is matched and slidingly connected between the limit grooves 603 of the two side plates 605, and two ends of the shaft lever 608 extend out and are fixedly connected with the limit blocks 603;
the measuring wheel 604, the measuring wheel 604 is fixedly arranged in the middle of the shaft 608;
the first swivel 609 is rotatably sleeved on the front part of the shaft lever 608, and a compression bar 607 is fixed on the side wall of the first swivel 609;
the stress column 612, one end of the stress column 612 is connected with the compression bar 607, the other end of the stress column 612 penetrates into the measurement shell 601 and props against the measurement end of the digital display dial indicator 606, and a limiting ring 611 is fixedly sleeved on part of the stress column 612 positioned in the measurement shell 601;
and a second spring 610, the second spring 610 is sleeved on the side wall of the stress column 612, and the second spring 610 is connected between the pressure lever 607 and the measurement housing 601;
specifically, the throughput wheel 604 is used as a deformation amount transmission medium, the throughput wheel is initially propped against the side wall of the test tube which is not deformed, overpressure will be generated, the stress column 612 overcomes the elasticity of the spring II 610 and pushes the measuring end of the digital display dial indicator 606, at this time, the initial data value of the digital display dial indicator 606 is required to be recorded, after the expansion of the test tube is finished, the radial deformation measuring mechanism 6 is driven by the sliding table module 11 to perform sectional movement, the data value change of the digital display dial indicator 606 is recorded, and the initial data value is subtracted from the data value, so as to obtain the expansion deformation amount of the test tube.
In the embodiment, the rear parts of the two shaft rods 68 are rotatably sleeved with two swivel rings 615, a telescopic rod 614 is connected between the two swivel rings 615, and an angle sensor 613 is fixedly arranged on the side wall of the telescopic rod 614;
specifically, the two measuring wheels 604 are propped against the deformation area of the test tube, and due to the difference of deformation amounts, the deformation area has a gradient, and then the gradient change value of the deformation area can be obtained through the angle change between the two measuring wheels.
A test method for testing expansion pressure and expansion deformation in a pipe comprises the following steps:
step 1: the bottom end of the test tube 7 is mounted on a sealing tray in a sealing way, and the tightness of the test tube is checked;
step 2: filling an expanding reagent into the test tube 7, adjusting the top beam to a set height after the expanding reagent is stable, manually pressing the two inclined rods 27 to convert the radial pressure measuring assembly into an adduction state so that the axial pressure measuring assembly and the radial pressure measuring assembly extend into the test tube 7, and driving the test tube 7 to a set position through the preloading oil cylinder 9;
step 3: the radial deformation measuring mechanism 6 is driven to move to a set height through the sliding table module 11, then the radial deformation measuring mechanism 6 is driven to move towards the direction of the test tube 7 through the electric cylinder 10 until the measuring wheel 604 abuts against the side wall of the test tube 7, and the data value 606 of the digital display dial indicator at the moment is recorded;
step 4: the expansion reagent in the tube 7 to be tested reacts to generate expansion pressure, and the data values of the axial pressure sensor 15 and the radial pressure sensor 26 in the tube are recorded in a time-sharing manner until the reaction is finished;
step 5: the radial deformation measuring mechanism 6 is driven to move in a sectional mode through the sliding table module 11, and data values of the digital display dial indicator 606 and the angle sensor 613 are recorded, so that the deformation and the deformation gradient of the test tube 7 are calculated.
Step 6: after the test is completed, the radial deformation measuring mechanism 6 is driven to move to an initial position through the electric cylinder 10, the top beam 2 is dismounted, the axial pressure measuring assembly and the radial pressure measuring assembly are withdrawn from the test tube 7 and cleaned, and finally, the test tube 7 is taken down.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A test system for testing inflation pressure and inflation deformation in a tube, comprising:
the steel frame comprises a steel frame base (8), wherein two symmetrical steel frame upright posts (4) are fixed on the top surface of the steel frame base (8), and a plurality of fixing holes which are arranged at equal intervals are formed in the top of each steel frame upright post (4) in a penetrating manner;
the pre-loading oil cylinder (9), the pre-loading oil cylinder (9) is fixed on the steel frame base (8) and is positioned on the symmetrical line of the two steel frame upright posts (4), a sealing tray is fixed on the driving end of the pre-loading oil cylinder (9), and the bottom end of the test tube (7) can be installed on the sealing tray in a sealing way;
the sliding table module (11) is fixedly arranged on one side, opposite to the steel frame upright posts (4), of each sliding table module (11), each sliding table module (11) is fixedly provided with an electric cylinder (10) on a moving block, the driving end of each electric cylinder (10) is fixedly provided with a mounting disc (5), and at least two radial deformation measuring mechanisms (6) are fixed on the inward end face of each mounting disc (5);
and the top beam (2) is arranged between the two steel frame upright posts (4), and is fixed at a set fixing hole by adopting a locking screw (3), one end of a pressure-bearing steel pipe (1) is fixed at the central position of the bottom surface of the top beam (2), a pressure measuring mechanism is fixed at the other end of the pressure-bearing steel pipe (1), and the pressure measuring mechanism can extend into the test pipe (7) for pressure detection.
2. The test system for testing the expansion pressure and the expansion deformation in a pipe according to claim 1, wherein: the pressure measuring mechanism consists of an axial pressure measuring component and a radial pressure measuring component arranged at the bottom of the axial pressure measuring component, wherein the axial pressure measuring component can measure the axial pressure value in the test tube (7), and the radial pressure measuring component can measure the radial pressure value in the test tube (7).
3. A test system for testing the expansion pressure and expansion deformation of a pipe according to claim 2, wherein: the axial pressure measurement assembly includes
The pressure-bearing sleeve head (12), the pressure-bearing sleeve head (12) is fixedly sleeved at the bottom end of the pressure-bearing steel pipe (1);
the top end of the pressure-bearing column head (16) is fixedly embedded in the bottom end opening of the pressure-bearing sleeve head (12);
and an axial pressure sensor (15), the axial pressure sensor (15) being connected between the pressure-bearing stud (16) and the piston (13).
4. A test system for testing the expansion pressure and expansion deformation of a pipe according to claim 3, wherein: the side wall of the pressure-bearing sleeve head (12) is provided with a second sealing ring (17) in a matching sleeve manner, and the side wall of the piston (13) is provided with a first sealing ring (14) in a matching sleeve manner.
5. A test system for testing the expansion pressure and expansion deformation of a pipe according to claim 3, wherein: the radial pressure measurement assembly comprises
The bearing sleeve head (18) is fixedly sleeved at the bottom end of the piston (13);
the top end of the vertical rod (19) is fixed at the central position of the bottom surface of the bearing sleeve head (18), a fixed seat (24) is fixed at the bottom end of the vertical rod (19), one end of an elastic rod piece is fixed at the left end and the right end of the fixed seat (24), and a radial pressure sensor (26) is fixedly arranged at the other end of each elastic rod piece through a connecting handle (22);
and the sliding ring (20) is sleeved on the side wall of the vertical rod (19) in a sliding way, one end of a diagonal rod (27) is hinged to the left end and the right end of the sliding ring (20), and the other end of each diagonal rod (27) is hinged to an elastic rod piece corresponding to the diagonal rod.
6. The test system for testing the expansion pressure and expansion deformation of a pipe according to claim 5, wherein: the elastic rod piece consists of an external cylinder, a first spring (23), an internal rod (25) and a sliding block (21), wherein one end of the external cylinder is fixed on the fixed seat (24), the sliding block (21) is arranged in the external cylinder in a matched sliding manner, the sliding block (21) is connected with one end of the internal rod (25), the other end of the internal rod (25) penetrates through the other end wall of the external cylinder and extends out, and the extending end of the internal rod (25) is hinged with the inclined rod (27);
the first spring (23) is connected between the sliding block (21) and the inner wall of the external cylinder.
7. The test system for testing the expansion pressure and the expansion deformation in a pipe according to claim 1, wherein: the radial deformation measuring mechanism (6) comprises
The measuring device comprises a measuring shell (601), wherein the measuring shell (601) is fixed on a mounting disc (5), and two digital display dial indicators (606) are fixedly arranged on the inner side wall of the measuring shell (601);
the side plates (605), wherein two side plates (605) are arranged, and the front and the back of the two side plates (605) are symmetrically arranged on the side wall of the measuring shell (601);
and the radial deformation quantity transmission assemblies are arranged in two, each radial deformation quantity transmission assembly is arranged between two side plates (605), and the tail ends of the radial deformation quantity transmission assemblies penetrate into the measuring shell (601) and can transmit the deformation quantity of the test tube (7) to the digital display dial indicator (606).
8. The test system for testing the expansion pressure and expansion deformation of a pipe according to claim 7, wherein: the radial deformation transmission assembly comprises
The shaft rods (608) are matched and slidingly connected between the limit grooves (603) of the two side plates (605), and two ends of each shaft rod (608) extend out and are fixedly connected with the limit blocks (603);
a measuring wheel (604), wherein the measuring wheel (604) is fixedly arranged in the middle of the shaft lever (608);
the first rotating ring (609) is rotatably sleeved on the front part of the shaft lever (608), and a pressing rod (607) is fixed on the side wall of the first rotating ring (609);
the device comprises a stress column (612), wherein one end of the stress column (612) is connected with a pressing rod (607), the other end of the stress column (612) penetrates into a measuring shell (601) and is propped against the measuring end of a digital display dial indicator (606), and a limiting ring (611) is fixedly sleeved on part of the stress column (612) positioned in the measuring shell (601);
and a second spring (610), wherein the second spring (610) is sleeved on the side wall of the stress column (612), and the second spring (610) is connected between the pressing rod (607) and the measurement shell (601).
9. The test system for testing the expansion pressure and expansion deformation of a pipe according to claim 8, wherein: the rear parts of the two shaft rods (68) are rotatably sleeved with two swivel rings (615), a telescopic rod (614) is connected between the two swivel rings (615), and an angle sensor (613) is fixedly arranged on the side wall of the telescopic rod (614).
10. A test method for testing expansion pressure and expansion deformation in a pipe is characterized by comprising the following steps:
step 1: the bottom end of the test tube (7) is arranged on a sealing tray in a sealing way, and the tightness of the test tube is checked;
step 2: filling an expanding reagent into the test tube (7), adjusting the top beam to a set height after the expanding reagent is stable, manually pressing the two inclined rods (27), converting the radial pressure measurement assembly into an adduction state so that the axial pressure measurement assembly and the radial pressure measurement assembly extend into the test tube (7), and driving the test tube (7) to a set position through the preloading oil cylinder (9);
step 3: the radial deformation measuring mechanism (6) is driven to move to a set height through the sliding table module (11), then the radial deformation measuring mechanism (6) is driven to move towards the direction of the test tube (7) through the electric cylinder (10) until the measuring wheel (604) abuts against the side wall of the test tube (7), and the data value (606) of the digital display dial indicator at the moment is recorded;
step 4: the expansion reagent in the tube (7) to be tested reacts to generate expansion pressure, and the data values of an axial pressure sensor (15) and a radial pressure sensor (26) in the tube are recorded in a time-sharing manner until the reaction is finished;
step 5: the radial deformation measuring mechanism (6) is driven to move in a sectional mode through the sliding table module (11), and data values of the digital display dial indicator (606) and the angle sensor (613) are recorded, so that deformation and deformation gradient of the test tube (7) are calculated.
Step 6: after the test is finished, the radial deformation measuring mechanism (6) is driven to move to an initial position through the electric cylinder (10), the top beam (2) is dismounted, the axial pressure measuring assembly and the radial pressure measuring assembly are withdrawn from the test tube (7) and cleaned, and finally, the test tube (7) is taken down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310787453.2A CN116819007A (en) | 2023-06-30 | 2023-06-30 | Test system and method for testing expansion pressure and expansion deformation in pipe |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310787453.2A CN116819007A (en) | 2023-06-30 | 2023-06-30 | Test system and method for testing expansion pressure and expansion deformation in pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117589350A (en) * | 2023-11-14 | 2024-02-23 | 上海公路桥梁（集团）有限公司 | Test device for measuring shield propulsion resistance in expandable rock stratum |
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2023
- 2023-06-30 CN CN202310787453.2A patent/CN116819007A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117589350A (en) * | 2023-11-14 | 2024-02-23 | 上海公路桥梁（集团）有限公司 | Test device for measuring shield propulsion resistance in expandable rock stratum |
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