CN114659900A - Pressure test device for simulating myriameter deep sea submerging and surfacing process and operation method - Google Patents
Pressure test device for simulating myriameter deep sea submerging and surfacing process and operation method Download PDFInfo
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- CN114659900A CN114659900A CN202210354504.8A CN202210354504A CN114659900A CN 114659900 A CN114659900 A CN 114659900A CN 202210354504 A CN202210354504 A CN 202210354504A CN 114659900 A CN114659900 A CN 114659900A
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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
-
- 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
A pressure test device for simulating a myriameter deep sea diving process and an operation method thereof comprise a counterforce frame, wherein the counterforce frame is structurally characterized in that: the hydraulic test device comprises an upper cross beam and a lower cross beam which are arranged at intervals in an up-down parallel mode, wherein the upper cross beam and the lower cross beam are connected through four guide columns, a hydraulic cylinder is arranged on the upper surface of the lower cross beam, a slide way is fixed on the upper surface of the lower cross beam through a supporting piece, a movable trolley which slides along the slide way is arranged on the slide way, a pressure chamber is arranged on the movable trolley, a test piece and liquid are placed in the pressure chamber, the pressure chamber slides to the position above the hydraulic cylinder through the movable trolley, a piston rod of the hydraulic cylinder is contacted with the bottom of the pressure chamber, and the top surface of the pressure chamber is contacted with the upper cross beam. The pressure is lifted by increasing or decreasing the volume in the pressure chamber, the pressure lifting speed is controlled by the load output by the hydraulic cylinder, the pressure cycle test efficiency is greatly improved, vulnerable elements such as an ultra-high pressure pump and a 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 myriameter deep sea submerging and surfacing process and an operation method.
Background
The ocean world contains abundant resources, and is the most realistic and strategic space with the most development potential for human beings at present. In recent decades, the exploration work of human beings on the ocean is continuously deepened, deep-sea submergence vehicles with different specifications and functions are developed, and the research and development requirements of the ocean are met.
The deep sea submersible belongs to equipment used for multiple times, and before a formal sea test, key equipment such as a buoyancy material, a hydraulic element, a structural part and the like needs to be subjected to long-period and multiple-frequency pressure cycle test examination so as to ensure that the performance of the deep sea submersible meets the overall requirement. In order to meet the test requirements, corresponding test devices and methods need to be developed.
The test device in the prior art mostly adopts the principle that a high-pressure pump and a pressure chamber are combined, water is injected or drained into the pressure chamber through the high-pressure pump, the hydraulic environment in the pressure chamber is lifted, and therefore the whole submerging and floating process is simulated. The scheme has high requirement on a pipeline system, and is easy to cause the failure of a pressure element and influence the working efficiency.
Disclosure of Invention
The applicant provides a pressure test device and an operation method for simulating a myriameter deep sea submerging and surfacing process aiming at the defects in the prior art, so that the test device and the method for realizing ultrahigh pressure circulation by changing the volume in a pressure chamber greatly improve the test efficiency and the working reliability.
The technical scheme adopted by the invention is as follows:
the utility model provides a pressure test device of simulation ten thousand meters deep sea process of diving and floating, includes the reaction frame, the structure of reaction frame is: the device comprises an upper cross beam and a lower cross beam which are arranged at intervals in an up-down parallel mode, wherein four guide columns are connected between the upper cross beam and the lower cross beam, a hydraulic cylinder is arranged on the upper surface of the lower cross beam, a slide way is fixed on the upper surface of the lower cross beam through a support piece, a movable trolley which slides along the slide way is arranged on the slide way, a pressure chamber is arranged on the movable trolley, a test piece and liquid are placed in the pressure chamber, the pressure chamber slides to the position above the hydraulic cylinder through the movable trolley, a piston rod of the hydraulic cylinder is contacted with the bottom of the pressure chamber, and the top surface of the pressure chamber is contacted with the upper cross beam.
The further technical scheme is as follows:
the structure of the pressure chamber is as follows: the cabin body comprises a hollow cylinder, the outer wall of the cabin body is fixed with a base, the base is fixed with a movable trolley, a lower cabin cover is installed at the bottom of the cabin body through a sealing element, an upper cabin cover is installed at the top of the cabin body through a sealing element, and a cover detaching mechanism is installed on the upper cabin cover.
The inner diameters of the upper end and the lower end of the cabin body are larger than that of the middle part.
The upper cabin cover and the lower cabin cover are both cake-shaped solid components.
The top of the upper cabin cover is provided with a limit ring, and the lower end of the upper cabin cover is a smooth cylinder embedded in the cabin 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 cabin cover through a pipeline.
An operation method of a pressure test device for simulating a myriameter deep sea submerging and surfacing process comprises the following operation steps:
the first step is as follows: checking whether each component is complete;
the second step is that: preparing, namely placing the pressure cabin on a movable trolley and fixing the pressure cabin;
the third step: mounting, namely placing a test piece into a pressure chamber;
the fourth step: injecting water into the pressure chamber, enabling the water level line to reach a designated position, and opening the stop valve;
the fifth step: installing an upper cabin cover, adopting a cover detaching mechanism to press the upper cabin cover downwards, and closing the stop valve when the pointer falls to the mark of 'start to add pressure line';
and a sixth step: transferring the movable trolley to the working position of the testing machine;
the seventh step: setting the highest output load of the testing machine according to the test pressure and a load-pressure curve, wherein the load is lower than a corresponding value;
eighth step: starting the testing machine, and setting a pressurizing process according to the test requirement;
the ninth step: after the test is finished, the testing machine is unloaded;
the tenth step: after the pressure in the pressure chamber is reduced to 0, moving out the pressure chamber, opening the cover, and then taking down the test piece;
the eleventh step: and (6) printing a report.
The invention has the following beneficial effects:
(1) the invention realizes the lifting of pressure by adopting the mode of increasing and decreasing the volume in the cabin, cancels vulnerable elements such as a high-pressure pump, a valve and the like, and improves the reliability of the whole set of device;
(2) the volume in the cabin is increased and decreased by the expansion of the hydraulic cylinder, and the pressure lifting speed in the pressure cabin is indirectly controlled by the load output by the hydraulic cylinder, so that the control precision is improved.
(3) The cover disassembling mechanism is arranged in the pressure chamber, and the upper cover is disassembled and assembled through the screw rod, so that the operation convenience is improved, and the labor intensity is reduced.
(4) The method is mainly used for simulating the whole-sea deep pressure environment, testing the performance change of the deep-sea equipment in the process of multiple times of submerging and surfacing, and can also be applied to structural fatigue performance detection through certain expansion.
Drawings
FIG. 1 is a schematic 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 structural view of the pressure chamber of the present invention in a removed state.
Fig. 7 is a schematic view of the pressure chamber of the present invention in position, ready for pressurization.
Fig. 8 is a schematic structural view 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. moving the trolley; 5. a hydraulic cylinder; 6. a lower cross beam; 7. a slideway; 8. a baffle plate;
301. a cover removing mechanism; 302. an upper hatch cover; 303. a cabin body; 304. a pipeline; 305. a pressure control module; 306. a lower deck lid; 307. a base.
Detailed Description
The following description of the embodiments of the present invention refers to the accompanying drawings.
As shown in fig. 1 to 8, the pressure test apparatus for simulating the deep sea diving process of ten thousand meters according to the present embodiment includes a reaction frame, and the reaction frame has a structure of: including parallel spaced entablature 1 and bottom end rail 6 from top to bottom, four guide posts 2 are connected between entablature 1 and the bottom end rail 6, surface mounting has pneumatic cylinder 5 on the bottom end rail 6, 6 upper surfaces of bottom end rail are fixed with slide 7 through support piece, install the travelling car 4 that slides along slide 7 on the slide 7, install pressure chamber 3 on the travelling car 4, place test piece and liquid in the pressure chamber 3, pressure chamber 3 slides the top of pneumatic cylinder 5 through travelling car 4, the piston rod of pneumatic cylinder 5 and the contact of 3 bottoms in pressure chamber, 3 top surfaces in pressure chamber and the contact of entablature 1.
The structure of the pressure chamber 3 is: the outer wall of the cabin 303 is fixed with a base 307, the base 307 is fixed with the movable trolley 4, a lower cabin cover 306 is installed at the bottom of the cabin 303 through a sealing piece, an upper cabin cover 302 is installed at the top of the cabin 303 through a sealing piece, and a cover detaching mechanism 301 is installed on the upper cabin cover 302.
The inner diameters of the upper and lower ends of the cabin 303 are larger than the inner diameter of the middle part.
Both the upper deck lid 302 and the lower deck lid 306 are pie-shaped solid components.
The top of the upper cabin cover 302 is provided with a limit ring, and the lower end of the upper cabin cover 302 is a smooth cylinder embedded in the cabin 303.
The bottom of the lower cabin cover 306 is provided with a limit ring, and the upper end of the lower cabin cover 306 is provided with a sealing groove.
Also included is a pressure control module 305, the pressure control module 305 communicating with the upper deck lid 302 via line 304.
A baffle plate 8 is arranged on the movable trolley 4, and a through hole matched with the pressure chamber 3 is formed in the baffle plate 8.
The operation method of the pressure test device for simulating the myriameter deep sea submergence process comprises the following operation steps:
the first step is as follows: checking whether each component is complete;
the second step is that: preparing, namely placing the pressure cabin 3 on a movable trolley 4 and fixing;
the third step: mounting, namely placing a test piece into the pressure chamber 3;
the fourth step: injecting water into the pressure chamber 3, enabling the water level line to reach a designated position, and opening the stop valve;
the fifth step: installing an upper hatch 302, adopting a cover detaching mechanism 301 to press the upper hatch 302 downwards, and closing the stop valve when the pointer falls to a mark of 'pressure line start';
and a sixth step: the movable trolley 4 is transferred to the working position of the testing machine;
the seventh step: setting the highest output load of the testing machine according to the test pressure and a load-pressure curve, wherein the load is lower than a corresponding value;
eighth step: starting the testing machine, and setting a pressurizing process according to the test requirement;
the ninth step: after the test is finished, the testing machine is unloaded;
the tenth step: after the pressure in the pressure chamber 3 is reduced to 0, moving out the pressure chamber 3, opening the cover, and then taking down the test piece;
the eleventh step: and (6) printing a report.
The specific structure and function of the invention are as follows:
mainly comprises a pressure chamber 3, a counter-force frame, a hydraulic cylinder 5 and the like.
The pressure chamber 3 is a core component of the present invention, and includes a chamber 303, an upper chamber cover 302, a lower chamber cover 306, a sealing member, a pressure control module 305, a cover removing structure 301, and the like, wherein the upper chamber cover 302 and the lower chamber cover 306 are both partially embedded in the chamber 303, and form a closed space through the sealing member, and the lower chamber cover 306 and the chamber 303 are axially fixed. The counterforce frame is composed of a guide post 2, an upper cross beam 1 and a lower cross beam 6, is mainly used for bearing axial load of the pressure chamber, and is used as a base for mounting various devices.
In a normal working state, the upper cabin cover 302 is in contact with the upper cross beam 1 of the counterforce frame, and the lower cabin cover 306 is in contact with a piston rod of the hydraulic cylinder 5; when the hydraulic cylinder 5 extends upwards, the lower cabin cover 306 and the cabin 303 are pushed to integrally move upwards, and the upper cabin cover 302 slides towards the inside of the cabin 303, so that the volume in the pressure cabin 3 is reduced, the water pressure in the cabin is improved, namely a boosting process, and the submerging process of deep sea equipment is simulated; when the hydraulic cylinder 5 retracts downwards, the pressure reduction process is achieved, and the floating process of deep sea equipment is simulated.
The cabin 303 is a hollow cylinder, and the inner diameters of the upper and lower ends are slightly larger than the middle part, so that the cabin is convenient to manufacture.
The upper cabin cover 302 is a cake-shaped solid component, the top of the upper cabin cover is provided with a limiting ring, the lower end of the upper cabin cover is a smooth cylinder, the upper cabin cover is embedded into the inner side of the cabin body 303 and is meshed with the inner surface of the cabin body 303, and the bottom of the upper cabin cover is provided with a sealing groove for installing a sealing piece.
The lower hatch 306 is a cake-shaped solid member, the bottom of which is provided with a limit ring, and the other end of which is provided with a sealing groove for installing a sealing element.
The sealing elements are arranged between the upper cabin cover 302, the lower cabin cover 306 and the cabin 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 cabin cover 302, two ends of the L-shaped high-pressure steel pipe are respectively connected with the upper cabin cover 302 and the four-way joint, and the joint is an internal thread; the other two ends of the four-way 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 connected with the 1/4 pressure steel pipe with the pressure grade not lower than 200MPa are respectively connected with the manual stop valve, the safety valve and the pressure gauge.
The cover detaching mechanism 301 is used for mounting and detaching the upper hatch cover 302 and comprises a bracket, a butt pull lug, a screw rod, a baffle plate, a limiting plate and a hexagonal wrench. The support is U-shaped, two ends of the support are hinged with the cabin body, and the cross brace is provided with a screw nut. The butt joint pull lug is matched with the fixed pull lug, the butt joint pull lug is of a T-shaped structure, the fixed pull lug is of an inwards concave structure, and the butt joint pull lug and the fixed pull lug can be axially constrained and freely rotate after being assembled. Meanwhile, one side of the fixed pull lug is provided with a limiting hole which is matched with the limiting plate, so that the 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 fixed pull lug of the upper cabin cover, and the upper cabin cover is lifted through rotation of the screw rod, so that the disassembly and assembly actions are completed.
The pressure control method of the invention comprises the following steps:
the pressure in the pressure chamber is controlled by force, that is, the pressure in the chamber is indirectly controlled by controlling the output load of the hydraulic cylinder. Before the hydraulic cylinder is used in a formal mode, the output load and the cabin pressure of the hydraulic cylinder are calibrated, the cabin pressure Pj (j is 1 to n) under different output loads Fi (i is 1 to n) is detected, a load-pressure curve is obtained through fitting according to the detection data, and then pressure adding and releasing parameters are set according to the curve.
The operation and use process of the invention is as follows:
checking whether each component is complete, and carrying out the next work after the components are complete;
the pressure chamber 3 is integrally placed on the movable trolley 4 and fixed;
installing a model or a test piece;
injecting water into the pressure chamber 3, wherein the water level line is away from the upper end face of the cylinder by a certain distance;
opening the stop valve;
installing an upper hatch 302, adopting a cover detaching mechanism 301 to press the upper hatch 302 downwards, and closing the stop valve when a pointer of the upper hatch 302 falls to a mark of 'pressure line start';
the movable trolley 4 is transferred to the working position of the testing machine;
setting the highest output load of the testing machine according to the test pressure and a load-pressure curve, wherein the load is not higher than a corresponding value;
starting the testing machine, and setting a pressurizing process according to the test requirement;
after the test is finished, the testing machine is unloaded;
after the pressure in the pressure chamber is reduced to 0, moving out the pressure chamber 3, opening the cover, and then taking down the measured piece;
and (6) printing a report.
The above description is intended to be illustrative, and not restrictive, the scope of the invention being indicated by the claims, and all changes that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (8)
1. The utility model provides a pressure test device of simulation ten thousand meters deep sea process of diving and floating which characterized in that: including the reaction frame, the structure of reaction frame does: including parallel spaced entablature (1) and bottom end rail (6) from top to bottom, four guide post (2) are connected between entablature (1) and bottom end rail (6), surface mounting has pneumatic cylinder (5) on bottom end rail (6), bottom end rail (6) upper surface is fixed with slide (7) through support piece, install travelling car (4) that slide along slide (7) on slide (7), install pressure cabin (3) on travelling car (4), put into test piece and liquid in pressure cabin (3), the top of pneumatic cylinder (5) is slided through travelling car (4) in pressure cabin (3), the piston rod and the contact of pressure cabin (3) bottom of pneumatic cylinder (5), pressure cabin (3) top surface and entablature (1) contact.
2. The pressure test device for simulating the myriameter deep sea submergence and floatation process, as claimed in claim 1, characterized in that: the structure of the pressure chamber (3) is as follows: the movable cabin comprises a hollow cylindrical cabin body (303), wherein the outer wall of the cabin body (303) is fixed with a base (307), the base (307) is fixed with a movable trolley (4), a lower cabin cover (306) is installed at the bottom of the cabin body (303) through a sealing piece, an upper cabin cover (302) is installed at the top of the cabin body (303) through the sealing piece, and a cover detaching mechanism (301) is installed on the upper cabin cover (302).
3. The pressure test device for simulating the myriameter deep sea submergence and floatation process as claimed in claim 2, characterized in that: the inner diameters of the upper end and the lower end of the cabin body (303) are larger than that of the middle part.
4. The pressure test device for simulating the myriameter deep sea submergence and floatation process as claimed in claim 2, characterized in that: the upper cabin cover (302) and the lower cabin cover (306) both adopt cake-shaped solid components.
5. The pressure test device for simulating the myriameter deep sea submergence and floatation process as claimed in claim 2, characterized in that: the top of the upper cabin cover (302) is provided with a limiting ring, and the lower end of the upper cabin cover (302) is a smooth cylinder embedded in the cabin body (303).
6. The pressure test device for simulating the myriameter deep sea submergence and floatation process as claimed in claim 2, characterized in that: 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.
7. The pressure test device for simulating the myriameter deep sea submergence and floatation process as claimed in claim 2, characterized in that: also included is a pressure control module (305), the pressure control module (305) being in communication with the upper deck lid (302) via a conduit (304).
8. An operation method of a pressure test device for simulating a myriameter deep sea submerging and surfacing process is characterized by comprising the following steps:
the method comprises the following operation steps:
the first step is as follows: checking whether all parts are complete or not;
the second step: preparing, namely placing the pressure cabin (3) on the movable trolley (4) and fixing;
the third step: mounting, namely placing a test piece into the pressure chamber (3);
the fourth step: injecting water into the pressure chamber (3), enabling the water level line to reach a designated position, and opening the stop valve;
the fifth step: installing an upper hatch cover (302), pressing the upper hatch cover (302) downwards by adopting a cover detaching mechanism (301), and closing the stop valve when a pointer falls to a mark of 'starting to add pressure line';
and a sixth step: the movable trolley (4) is transferred to the working position of the testing machine;
the seventh step: setting the highest output load of the testing machine according to the test pressure and a load-pressure curve, wherein the load is lower than a corresponding value;
eighth step: starting the testing machine, and setting a pressurizing process according to the test requirement;
the ninth step: after the test is finished, the testing machine is unloaded;
the tenth step: after the pressure in the pressure chamber (3) is reduced to 0, the pressure chamber (3) is moved out, the cover is opened, and then the test piece is taken down;
the eleventh step: and (6) 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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| Publication Number | Publication Date |
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| CN114659900A true CN114659900A (en) | 2022-06-24 |
| CN114659900B CN114659900B (en) | 2023-05-23 |
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| CN202210354504.8A Active 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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| Publication number | Publication date |
|---|---|
| CN114659900B (en) | 2023-05-23 |
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