CN114659900B - Pressure test device for simulating ten-thousand-meter deep sea submerged floating process and operation method - Google Patents
Pressure test device for simulating ten-thousand-meter deep sea submerged floating process and operation method Download PDFInfo
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- CN114659900B CN114659900B CN202210354504.8A CN202210354504A CN114659900B CN 114659900 B CN114659900 B CN 114659900B CN 202210354504 A CN202210354504 A CN 202210354504A CN 114659900 B CN114659900 B CN 114659900B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
Abstract
The utility model provides a simulation ten thousand meters deep sea submerged process's pressure test device and operation method, includes reaction frame, reaction frame's structure is: including upper cross beam and the underbeam of upper and lower parallel spaced, four guide posts are connected between upper cross beam and the underbeam, underbeam upper surface mounting has the pneumatic cylinder, the underbeam upper surface is fixed with the slide through support piece, install the travelling car that slides along the slide on the slide, install the pressure cabin on the travelling car, put into test piece and liquid in the pressure cabin, the pressure cabin slides the top to the pneumatic cylinder through the travelling car, the piston rod and the pressure cabin bottom contact of pneumatic cylinder, pressure cabin top surface and upper cross beam contact. The pressure cabin is increased or decreased in volume, the pressure is increased or decreased, the pressure increasing or decreasing speed is controlled by the output load of the hydraulic cylinder, the pressure circulation test efficiency is greatly improved, the vulnerable elements such as the ultra-high pressure pump and the valve are eliminated, and the equipment reliability is improved.
Description
Technical Field
The invention relates to the technical field of deep sea test devices, in particular to a pressure test device for simulating a ten-thousand-meter deep sea submerged floating process and an operation method.
Background
The ocean world is a strategy space with the most realistic and most development potential of human beings at present. In recent decades, the exploration of the sea by human beings is continuously in depth, and deep sea submarines with different specifications and functions are developed, so that the research and development requirements of the sea are met.
The deep sea submersible vehicle belongs to equipment for multiple use, and key equipment such as a buoyancy material, a hydraulic element, a structural member and the like need to be subjected to long-period and multi-frequency pressure cycle test examination before formal sea test so as to ensure that the performance of the submersible vehicle meets the overall requirements. To meet the test requirements, it is necessary to develop corresponding test devices and methods.
The test device in the prior art mostly adopts the principle of combining a high-pressure pump with a pressure cabin, and water is injected or discharged into the pressure cabin through the high-pressure pump, so that the lifting of the hydraulic environment in the pressure cabin is realized, and the whole submerged floating process is simulated. The scheme has higher requirements on the pipeline system, and is easy to cause the faults of the pressure element and influence the working efficiency.
Disclosure of Invention
The applicant provides a pressure test device and an operation method for simulating a ten-thousand-meter deep sea submerged process aiming at the defects in the prior production technology, so that the test device and the method for realizing ultra-high pressure circulation by changing the inner volume of a pressure cabin greatly improve the test efficiency and the working reliability.
The technical scheme adopted by the invention is as follows:
the utility model provides a simulation ten thousand meters deep sea submerged process's pressure test device, includes reaction frame, reaction frame's structure is: including upper cross beam and the underbeam of upper and lower parallel spaced, four guide posts are connected between upper cross beam and the underbeam, underbeam upper surface mounting has the pneumatic cylinder, the underbeam upper surface is fixed with the slide through support piece, install the travelling car that slides along the slide on the slide, install the pressure cabin on the travelling car, put into test piece and liquid in the pressure cabin, the pressure cabin slides the top to the pneumatic cylinder through the travelling car, the piston rod and the pressure cabin bottom contact of pneumatic cylinder, pressure cabin top surface and upper cross beam contact.
The further technical scheme is as follows:
the pressure cabin has the structure that: the movable trolley comprises a cabin body of a hollow cylinder, wherein the outer wall of the cabin body is fixed with a base, the base is fixed with the movable trolley, the bottom of the cabin body is provided with a lower cabin cover through a sealing element, the top of the cabin body is provided with an upper cabin cover through a sealing element, and the upper cabin cover is provided with a cover detaching mechanism.
The inner diameters of the upper end and the lower end of the cabin body are larger than the inner diameter of the middle part.
The upper hatch cover and the lower hatch cover are both made of cake-shaped solid members.
The top of the upper hatch cover is provided with a limiting ring, the lower end of the upper hatch cover is a smooth cylinder, and the upper hatch cover is embedded into the hatch body.
The bottom of the lower cabin cover is provided with a limiting ring, and the upper end of the lower cabin cover is provided with a sealing groove.
The pressure control module is communicated with the upper hatch cover through a pipeline.
An operation method of a pressure test device for simulating a ten-thousand-meter deep sea submerged process comprises the following operation steps:
the first step: checking, namely checking whether each part is complete;
and a second step of: preparing, namely placing the pressure cabin on a mobile trolley and fixing the pressure cabin;
and a third step of: the test piece is put into a pressure cabin during installation work;
fourth step: filling water into the pressure cabin, enabling the water line to reach a designated position, and opening the stop valve;
fifth step: installing an upper hatch cover, adopting a cover removing mechanism to press the upper hatch cover downwards, and closing a stop valve when a pointer falls to a mark of a starting pressing line;
sixth step: transferring the mobile trolley to a working position of the tester;
seventh step: setting the highest output load of the testing machine according to the test pressure and the load-pressure curve, wherein the load is lower than the corresponding value;
eighth step: starting a testing machine, and setting a pressurizing process according to the test requirement;
ninth step: unloading the testing machine after the test is finished;
tenth step: after the pressure in the pressure cabin is reduced to 0, removing the pressure cabin, uncovering, and then taking down the test piece;
eleventh step: and printing a report.
The beneficial effects of the invention are as follows:
(1) The invention realizes the pressure lifting by increasing or decreasing the volume in the cabin, eliminates vulnerable elements such as a high-pressure pump, a valve and the like, and improves the reliability of the whole device;
(2) According to the invention, the increase and decrease of the cabin internal volume is realized through the expansion and contraction of the hydraulic cylinder, and the pressure lifting speed in the pressure cabin is indirectly controlled through the output load of the hydraulic cylinder, so that the control precision is improved.
(3) The cover removing mechanism is arranged in the pressure cabin, and the upper cabin cover is removed through the lead screw, so that the operation convenience is improved, and the labor intensity is reduced.
(4) The invention is mainly used for simulating the full sea deep pressure environment, tests the performance change of the deep sea equipment in the multiple submerged floating process, and can be applied to structural fatigue performance detection after a certain expansion.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic view of the structure of the present invention (the pressure chamber is removed).
Fig. 3 is a front view of the present invention.
Fig. 4 is a side view of fig. 3.
Fig. 5 is a schematic view of the internal structure of the pressure chamber of the present invention.
Fig. 6 is a schematic view of the structure of the pressure chamber in the removed state of the invention.
FIG. 7 is a schematic view of the structure of the pressure chamber of the present invention in place, ready for pressurization.
Fig. 8 is a schematic view of the structure of the pressurized state of the pressure chamber of the present invention.
Wherein: 1. an upper cross beam; 2. a guide post; 3. a pressure chamber; 4. a moving trolley; 5. a hydraulic cylinder; 6. a lower cross beam; 7. a slideway; 8. a baffle;
301. the cover removing mechanism; 302. an upper hatch; 303. a cabin body; 304. a pipeline; 305. a pressure control module; 306. a lower hatch; 307. a base.
Detailed Description
The following describes specific embodiments of the present invention with reference to the drawings.
As shown in fig. 1 to 8, the pressure test device for simulating a deep sea diving process in this embodiment includes a reaction frame, where the reaction frame has the following structure: including upper cross beam 1 and lower cross beam 6 of upper and lower parallel interval, four guide posts 2 are connected between upper cross beam 1 and the lower cross beam 6, surface mounting has pneumatic cylinder 5 on the lower cross beam 6, the upper surface of lower cross beam 6 is fixed with slide 7 through support piece, install travelling car 4 that slides along slide 7 on the slide 7, install pressure cabin 3 on the travelling car 4, put into test piece and liquid in the pressure cabin 3, pressure cabin 3 slides the top to pneumatic cylinder 5 through travelling car 4, the piston rod and the contact of pressure cabin 3 bottom of pneumatic cylinder 5, pressure cabin 3 top surface and upper cross beam 1 contact.
The structure of the pressure cabin 3 is as follows: the outer wall of the cabin 303 including the hollow cylinder of the cabin 303 is fixed with the base 307, the base 307 is fixed with the travelling car 4, the bottom of the cabin 303 is provided with the lower cabin cover 306 through a sealing member, the top of the cabin 303 is provided with the upper cabin cover 302 through a sealing member, and the upper cabin cover 302 is provided with the cover removing mechanism 301.
The inner diameter of the upper and lower ends of the cabin 303 is larger than the inner diameter of the middle part.
Both upper deck lid 302 and lower deck lid 306 are solid members in the shape of a pie.
The top of the upper hatch cover 302 is provided with a limiting ring, the lower end of the upper hatch cover 302 is a smooth cylinder, and the upper hatch cover is embedded into the hatch body 303.
A limiting ring is arranged at the bottom of the lower hatch cover 306, and a sealing groove is arranged at the upper end of the lower hatch cover 306.
Also included is a pressure control module 305, the pressure control module 305 being in communication with the upper hatch 302 via a conduit 304.
A baffle plate 8 is arranged on the movable trolley 4, and a through hole matched with the pressure cabin 3 is formed in the baffle plate 8.
The operation method of the pressure test device for simulating the deep sea diving process of the embodiment comprises the following operation steps:
the first step: checking, namely checking whether each part is complete;
and a second step of: preparing, namely placing the pressure cabin 3 on the mobile trolley 4 and fixing the pressure cabin;
and a third step of: the test piece is put into the pressure cabin 3 during the installation work;
fourth step: filling water into the pressure cabin 3, enabling the water line to reach a designated position, and opening a stop valve;
fifth step: installing an upper hatch cover 302, adopting a cover removing mechanism 301 to press the upper hatch cover 302 downwards, and closing a stop valve when a pointer falls to a mark of 'starting to press a line';
sixth step: transferring the mobile trolley 4 to a working position of the tester;
seventh step: setting the highest output load of the testing machine according to the test pressure and the load-pressure curve, wherein the load is lower than the corresponding value;
eighth step: starting a testing machine, and setting a pressurizing process according to the test requirement;
ninth step: unloading the testing machine after the test is finished;
tenth step: after the pressure in the pressure cabin 3 is reduced to 0, removing the pressure cabin 3, uncovering, and then taking down the test piece;
eleventh step: and printing a report.
The specific structure and functions of the invention are as follows:
mainly comprises a pressure cabin 3, a counterforce frame, a hydraulic cylinder 5 and other parts.
The pressure cabin 3 is a core component of the invention and comprises a cabin body 303, an upper cabin cover 302, a lower cabin cover 306, a sealing element, a pressure control module 305, a cover removing structure 301 and the like, wherein the upper cabin cover 302 and the lower cabin cover 306 are partially embedded into the cabin body 303, a closed space is formed by the sealing element, and the lower cabin cover 306 is axially fixed with the cabin body 303. The reaction frame is composed of a guide post 2, an upper cross beam 1 and a lower cross beam 6, and is mainly used for bearing the axial load of the pressure cabin and simultaneously used as a mounting base of various equipment.
In a normal working state, the upper hatch cover 302 is contacted with the upper beam 1 of the reaction frame, and the lower hatch cover 306 is contacted with a piston rod of the hydraulic cylinder 5; when the hydraulic cylinder 5 stretches out upwards, the lower cabin cover 306 and the cabin body 303 are pushed to move upwards integrally, and the upper cabin cover 302 slides towards the inside of the cabin body 303, so that the volume in the pressure cabin 3 is reduced, the water pressure in the cabin is improved, namely, the pressure boosting process is simulated, and the submergence process of deep sea equipment is simulated; when the hydraulic cylinder 5 is retracted downwards, the hydraulic cylinder is a depressurization process, and the floating process of the deep sea equipment is simulated.
The cabin 303 is a hollow cylinder, and the inner diameters of the upper end and the lower end are slightly larger than those of the middle part, so that the manufacturing is convenient.
The upper hatch cover 302 is a cake-shaped solid member, the top is provided with a limiting ring, the lower end is a smooth cylinder, the limiting ring is embedded into the inner side of the hatch body 303 and meshed with the inner surface of the hatch body 303, and the bottom is provided with a sealing groove for installing a sealing element.
The lower hatch 306 is a cake-shaped solid member, a limiting ring is arranged at the bottom, and a sealing groove is arranged at the other end of the lower hatch for installing a sealing element.
The sealing elements are arranged between the upper hatch cover 302, the lower hatch cover 306 and the hatch body 303, and each group of sealing elements consists of a check ring, a J-shaped ring, a sealing ring and a limiting ring.
The mounting structure of the pressure control module 305 is: an L-shaped high-pressure steel pipe is arranged in the upper hatch cover 302, two ends of the L-shaped high-pressure steel pipe are respectively connected with the upper hatch cover 302 and the four-way joint, and the interface is an internal thread; the other two ends of the four-way joint connected with the 1/4 high-pressure steel pipe are respectively connected with a manual stop valve, a safety valve and a pressure gauge, and the other two ends of the four-way joint connected with the 1/4 high-pressure steel pipe are respectively connected with the manual stop valve, the safety valve and the pressure gauge, wherein the pressure grade of the pressure grade is not lower than 200 MPa.
The cover removing mechanism 301 is used for mounting and dismounting the upper hatch cover 302, and consists of a bracket, a butt joint pull lug, a screw rod, a baffle plate, a limiting plate and a hexagonal wrench. The bracket is U-shaped, two ends of the bracket are hinged with the cabin body, and a lead screw nut is arranged at the cross brace. The butt joint draws the ear and the fixed ear cooperation that draws, and the butt joint draws the ear to be T shape structure, and fixed ear that draws is concave structure, can realize axial restraint and rotation freedom after the assembly of both. Meanwhile, a limiting hole is formed in one side of the fixed pull lug and matched with the limiting plate, so that rotation of the fixed pull lug can be organized. When the lifting device is used, the butt joint pull lug is in butt joint with the upper hatch cover fixing pull lug, lifting of the upper hatch cover is achieved through rotation of the lead screw, and accordingly dismounting and mounting actions of the lifting device are completed.
The pressure control method of the invention comprises the following steps:
the pressure in the pressure cabin rises and falls by adopting a force control mode, namely, the pressure in the cabin is indirectly controlled by controlling the output load of the hydraulic cylinder. Before formal use, calibration is required to be carried out on the output load of the hydraulic cylinder and the pressure in the cabin, the pressure Pj (j=1-n) in the cabin under different output loads Fi (i=1-n) is detected, a load-pressure curve is obtained by fitting according to the detection data, and then the pressure relief adding parameter is set based on the curve.
The operation and use flow of the invention is as follows:
checking whether each part is complete, and carrying out next work after completion;
the pressure cabin 3 is integrally placed on the mobile trolley 4 and fixed;
installing a model or a test piece;
injecting water into the pressure cabin 3, wherein a water line is at a certain distance from the upper end surface of the cylinder;
opening a stop valve;
installing an upper hatch 302, pressing the upper hatch 302 downwards by adopting a cover removing mechanism 301, and closing a stop valve when a pointer of the upper hatch 302 falls to a mark of 'starting to press a line';
transferring the mobile trolley 4 to a working position of the tester;
setting the highest output load of the testing machine according to the test pressure and the load-pressure curve, wherein the load is not higher than the corresponding value;
starting a testing machine, and setting a pressurizing process according to the test requirement;
unloading the testing machine after the test is finished;
after the pressure in the pressure cabin is reduced to 0, removing the pressure cabin 3, uncovering, and then taking down the tested piece;
and printing a report.
The above description is intended to illustrate the invention and not to limit it, the scope of which is defined by the claims, and any modifications can be made within the scope of the invention.
Claims (7)
1. A pressure test device for simulating a ten-thousand-meter deep sea submerged process is characterized in that: including reaction frame, reaction frame's structure is: the device comprises an upper cross beam (1) and a lower cross beam (6) which are arranged at intervals in parallel up and down, wherein four guide posts (2) are connected between the upper cross beam (1) and the lower cross beam (6), a hydraulic cylinder (5) is arranged on the upper surface of the lower cross beam (6), a slide way (7) is fixed on the upper surface of the lower cross beam (6) through a supporting piece, a movable trolley (4) sliding along the slide way (7) is arranged on the slide way (7), a pressure cabin (3) is arranged on the movable trolley (4), a test piece and liquid are placed in the pressure cabin (3), the pressure cabin (3) slides to the upper side of the hydraulic cylinder (5) through the movable trolley (4), a piston rod of the hydraulic cylinder (5) is in contact with the bottom of the pressure cabin (3), and the top surface of the pressure cabin (3) is in contact with the upper cross beam (1); the pressure cabin (3) has the structure that: the movable trolley comprises a cabin body (303) of a hollow cylinder, wherein the outer wall of the cabin body (303) is fixed with a base (307), the base (307) is fixed with the movable trolley (4), a lower cabin cover (306) is arranged at the bottom of the cabin body (303) through a sealing element, an upper cabin cover (302) is arranged at the top of the cabin body (303) through a sealing element, and a cover removing mechanism (301) is arranged on the upper cabin cover (302).
2. The pressure test device for simulating a deep sea submerged process of ten thousand meters according to claim 1, wherein: the inner diameter of the upper end and the lower end of the cabin body (303) is larger than that of the middle part.
3. The pressure test device for simulating a deep sea submerged process of ten thousand meters according to claim 1, wherein: the upper hatch (302) and the lower hatch (306) are both solid members in the shape of a cake.
4. The pressure test device for simulating a deep sea submerged process of ten thousand meters according to claim 1, wherein: the top of the upper hatch cover (302) is provided with a limiting ring, the lower end of the upper hatch cover (302) is a smooth cylinder, and the upper hatch cover is embedded into the hatch body (303).
5. The pressure test device for simulating a deep sea submerged process of ten thousand meters according to claim 1, wherein: the bottom of the lower hatch cover (306) is provided with a limiting ring, and the upper end of the lower hatch cover (306) is provided with a sealing groove.
6. The pressure test device for simulating a deep sea submerged process of ten thousand meters according to claim 1, wherein: the device further comprises a pressure control module (305), wherein the pressure control module (305) is communicated with the upper hatch (302) through a pipeline (304).
7. A method of operating the pressure test apparatus for simulating a deep sea submerged process of the order of ten thousand meters according to claim 1, wherein: the method comprises the following operation steps:
the first step: checking, namely checking whether each part is complete;
and a second step of: preparing, namely placing the pressure cabin (3) on a mobile trolley (4) and fixing the pressure cabin;
and a third step of: the test piece is put into a pressure cabin (3) during installation work;
fourth step: filling water into the pressure cabin (3), enabling the water line to reach a designated position, and opening a stop valve;
fifth step: installing an upper hatch (302), adopting a cover removing mechanism (301) to press the upper hatch (302) downwards, and closing a stop valve when a pointer falls to a mark of starting to press a line;
sixth step: transferring the mobile trolley (4) to a working position of the tester;
seventh step: setting the highest output load of the testing machine according to the test pressure and the load-pressure curve, wherein the load is lower than the corresponding value;
eighth step: starting a testing machine, and setting a pressurizing process according to the test requirement;
ninth step: unloading the testing machine after the test is finished;
tenth step: after the pressure in the pressure cabin (3) is reduced to 0, removing the pressure cabin (3), uncovering, and then taking down the test piece;
eleventh step: and printing a report.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210354504.8A CN114659900B (en) | 2022-04-06 | 2022-04-06 | Pressure test device for simulating ten-thousand-meter deep sea submerged floating process and operation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210354504.8A CN114659900B (en) | 2022-04-06 | 2022-04-06 | Pressure test device for simulating ten-thousand-meter deep sea submerged floating process and operation method |
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| CN114659900B true CN114659900B (en) | 2023-05-23 |
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