CN209745709U - Waterproof and pressure resistance testing device for sealed cabin - Google Patents
Waterproof and pressure resistance testing device for sealed cabin Download PDFInfo
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- CN209745709U CN209745709U CN201920162928.8U CN201920162928U CN209745709U CN 209745709 U CN209745709 U CN 209745709U CN 201920162928 U CN201920162928 U CN 201920162928U CN 209745709 U CN209745709 U CN 209745709U
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- 230000007246 mechanism Effects 0.000 claims abstract description 28
- 238000002347 injection Methods 0.000 claims abstract description 14
- 239000007924 injection Substances 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 22
- 230000008569 process Effects 0.000 description 20
- 239000011888 foil Substances 0.000 description 8
- 238000011056 performance test Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000000630 rising effect Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- 108010066114 cabin-2 Proteins 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
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Abstract
a device for testing the waterproof and pressure-resistant performance of a sealed cabin comprises a pressure generating mechanism, the pressure cabin and a control mechanism, wherein the pressure cabin comprises a support, a cabin body, a test cabin, a cabin cover and a pressure release valve; the control mechanism comprises a computer, a watertight joint, a pressure sensor, a signal transmitter, an end face strain gauge and a circumferential strain gauge; the pressure generating mechanism leads high-pressure water into the cabin body through the water injection valve. The utility model discloses waterproof performance and the pressure resistance macroscopic test of test chamber not only can be realized, the emergence position when can accurately acquire test chamber moreover and take place waterproof inefficacy, the load pressure of withstand voltage inefficacy, withstand voltage inefficacy still has simple structure, convenient operation's advantage simultaneously.
Description
Technical Field
The utility model relates to a pressure vessel technical field, concretely relates to waterproof and pressure resistance test device of sealed cabin.
Background
With the rapid increase in the demand for underwater operations, the demand for underwater operation equipment has also increased rapidly. In order to realize a complex operation process, most underwater operation equipment is provided with an electric control device. To ensure that the electric control device can work normally in a submerged environment, the electric control device is usually placed in a sealed cabin with waterproof and pressure-resistant functions. In order to ensure that the set waterproof performance and the set compressive strength are satisfied, the sealed cabin is generally required to be subjected to waterproof performance tests and compressive performance tests before use. The existing device for testing the waterproof and pressure-resistant performance of the sealed cabin is a pressure cabin with adjustable loading pressure, the test method is to place the sealed cabin in the pressure cabin, increase the pressure of the pressure cabin to the working pressure of the sealed cabin, release the pressure to the atmospheric pressure after stabilizing the pressure for a period of time, and judge the waterproof and pressure-resistant performance of the sealed cabin by checking the integrity of the sealed cabin.
The existing device and method for testing the waterproof and pressure-resistant performance of the sealed cabin have the following defects that whether the sealed cabin has waterproof failure and pressure-resistant failure or not can not be obtained in real time in the testing process, the loading pressure when the sealed cabin has waterproof failure or pressure-resistant failure can not be obtained, and the specific part of the sealed cabin when the sealed cabin has pressure-resistant failure can not be obtained. The defects influence the accurate design of the sealed cabin and are not beneficial to accurately mastering the working performance of the sealed cabin.
Therefore, how to provide the testing device and the testing method for acquiring the waterproof and pressure-resistant performances of the sealed cabin in the pressure loading process in real time has important significance for realizing the accurate evaluation of the working performance of the sealed cabin.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is overcome prior art not enough, provide a waterproof and pressure resistance testing arrangement of sealed cabin, it not only can realize the waterproof performance and the pressure resistance macroscopic test of proof cabin, can accurately acquire the proof cabin moreover and take place the load pressure of waterproof inefficacy, the load pressure of pressure resistance inefficacy, the emergence position when pressure resistance inefficacy, still have simple structure, convenient operation's advantage simultaneously.
In order to solve the technical problem, the utility model provides a technical scheme does: a device for testing the waterproof and pressure-resistant performance of a sealed cabin comprises a pressure generating mechanism, the pressure cabin and a control mechanism, wherein the pressure cabin comprises a support, a cabin body, a test cabin, a cabin cover and a pressure release valve; the control mechanism comprises a computer, a watertight joint, a pressure sensor, a signal transmitter, an end surface strain gauge and a circumferential strain gauge, the watertight joint and the pressure sensor are respectively connected with the input end of the computer through cables, the output end of the computer is respectively connected with the pressure generating mechanism, the signal output ends of the end surface strain gauge and the circumferential strain gauge are connected with the input end of the signal transmitter, and the output end of the signal transmitter is connected with the watertight joint; and the pressure generating mechanism leads high-pressure water into the cabin body through the water injection valve.
As a further improvement of the above technical solution: the pressure generating mechanism comprises a water tank, a motor, a pressure pump, a pressure gauge and a two-way electromagnetic valve, wherein an output shaft of the motor is connected with an input shaft of the pressure pump, an inlet and an outlet of the pressure pump are respectively connected with the water tank and an inlet of the two-way electromagnetic valve, the pressure gauge is arranged at the outlet of the pressure pump, and an outlet of the two-way electromagnetic valve is connected with an inlet of a water injection valve; and the control ends of the motor and the two-way electromagnetic valve are respectively connected with the output end of the computer.
Further, the end face strain gauge is installed in the center of the upper end face of the test chamber.
Further, the circumferential strain gauge is installed in the middle of the outer side face of the test chamber.
Further, the water injection valve is a one-way valve, and the flow direction of the water injection valve is from the outside to the inside of the pressure chamber.
Further, the opening pressure of the pressure release valve can be adjusted according to test requirements, and the flow direction of the pressure release valve is from the inside to the outside of the pressure chamber.
Furthermore, the support and the inner hole of the cabin body are in clearance fit connection, the support and the test cabin are also in clearance fit connection, and the length of the test cabin inserted into the support is 10% -30% of the height of the test cabin.
Furthermore, the connecting cable between the watertight connector and the signal transmitter is a flexible furling cable, and the connecting cable between the end face strain gauge and the circumferential strain gauge is a flexible furling cable.
the test method of the device for testing the waterproof and pressure-resistant performance of the sealed cabin comprises the following steps:
1) The computer is used for starting the pressure generating mechanism to output high-pressure water, the high-pressure water enters the pressure cabin through the water injection valve to pressurize the pressure cabin, and meanwhile, the computer collects and records output signals of the pressure sensor, the end face strain gauge and the circumferential strain gauge in real time;
2) When the pressure in the pressure chamber reaches the required pressure, the computer closes the pressure generating mechanism; in the pressurizing process of the pressure chamber, if the computer detects that obvious slow boosting or rapid pressure reduction occurs in the pressure rising process of the pressure chamber, the waterproof failure of the test chamber is indicated;
3) During the pressurization process of the pressure chamber, if the computer detects an abrupt strain signal, the pressure chamber is about to fail in compressive strength; if the computer detects that the pressure sharply drops and the strain signal sharply rises in the pressure rising process of the pressure chamber, the pressure chamber is indicated to have the pressure resistance failure.
As a further improvement of the above technical solution: if the sudden change strain signal is from the end face strain gauge in the step 3), the pressure-resistant strength failure of the end face of the test chamber is indicated, if the sudden change strain signal is from the circumferential strain gauge, the pressure-resistant strength failure of the side face of the test chamber is indicated, if the test chamber is not expected to be crushed, the test process needs to be stopped, the pressure relief valve is opened, the pressure in the pressure chamber is reduced to the normal pressure, if the pressure limit of the crushed test chamber is expected to be obtained, the pressurization can be continued until the computer detects that the pressure in the pressure chamber is suddenly reduced and the strain signal is suddenly increased in the pressure increasing process.
Compared with the prior art, the utility model has the advantages of:
The utility model discloses an at the terminal surface and the side-mounting foil gage of test chamber, realized the real-time supervision that test chamber terminal surface and side met an emergency among the pressurization process, through at cabin cover installation pressure sensor, realized the real-time supervision of pressurization in-process pressure cabin pressure, through the judgement that monitoring pressure cabin pressure variation realized test chamber waterproof performance, through the judgement that monitoring strain signal changes realization test chamber resistance to pressure performance. Compare with current sealed cabin performance test device, the utility model discloses waterproof performance and the compressive property macro test of test cabin not only can be realized, the emergence position when can accurately acquire the test cabin moreover and take place the load pressure of waterproof inefficacy, the load pressure of compressive failure, compressive failure still has simple structure, convenient operation's advantage simultaneously.
Drawings
fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a pressure profile of the pressure chamber during pressurization in an embodiment of the present invention;
fig. 3 is a strain diagram of a pressure chamber during pressurization in an embodiment of the present invention.
Illustration of the drawings:
1. a pressure generating mechanism; 11. a water injection valve; 12. a water tank; 13. an electric motor; 14. a pressure pump; 15. a pressure gauge; 16. a two-way solenoid valve; 2. a pressure chamber; 21. a support; 22. a cabin body; 23. a test chamber; 24. a hatch cover; 25. a pressure relief valve; 26. a seal ring; 3. a control mechanism; 31. a computer; 32. a watertight joint; 33. a pressure sensor; 34. a signal transmitter; 35. an end face strain gauge; 36. circumferential strain gages.
Detailed Description
to facilitate understanding of the present invention, the present invention will be described more fully and specifically with reference to the accompanying drawings and preferred embodiments, but the scope of the present invention is not limited to the specific embodiments described below.
As shown in fig. 1, the device for testing the waterproof and pressure-resistant performance of the sealed cabin comprises a pressure generating mechanism 1, a pressure cabin 2 and a control mechanism 3, wherein the pressure cabin 2 comprises a support 21, a cabin body 22, a test cabin 23, a cabin cover 24 and a pressure release valve 25, the support 21 is installed at the bottom end inside the cabin body 22, the test cabin 23 is installed on the support 21, the cabin cover 24 is installed above the cabin body 22, a sealing ring 26 is installed between the cabin cover 24 and the cabin body 22, and the pressure release valve 25 is installed on the cabin cover 24; the control mechanism 3 comprises a computer 31, a watertight joint 32, a pressure sensor 33, a signal transmitter 34, an end surface strain gauge 35 and a circumferential strain gauge 36, the watertight joint 32 and the pressure sensor 33 are respectively connected with the input end of the computer 31 through cables, the output end of the computer 31 is respectively connected with the pressure generating mechanism 1, the signal output ends of the end surface strain gauge 35 and the circumferential strain gauge 36 are connected with the input end of the signal transmitter 34, and the output end of the signal transmitter 34 is connected with the watertight joint 32; the pressure generating mechanism 1 feeds high-pressure water into the cabin 22 through the water injection valve 11.
in this embodiment, the pressure generating mechanism 1 includes a water tank 12, a motor 13, a pressure pump 14, a pressure gauge 15 and a two-way solenoid valve 16, an output shaft of the motor 13 is connected with an input shaft of the pressure pump 14, an inlet and an outlet of the pressure pump 14 are respectively connected with inlets of the water tank 12 and the two-way solenoid valve 16, the pressure gauge 15 is installed at an outlet of the pressure pump 14, and an outlet of the two-way solenoid valve 16 is connected with an inlet of the water injection valve 11; the control terminals of the motor 13 and the two-way solenoid valve 16 are respectively connected with the output terminal of the computer 31.
In this embodiment, the end face strain gauge 35 is installed in the center of the upper end face of the test chamber 23, which is to consider that when the upper end face of the test chamber 23 generates strain, the strain value at the center position is the largest, so that the measurement is convenient.
In this embodiment, the circumferential strain gauge 36 is installed in the middle of the outer side surface of the test chamber 23, which is to consider that when the outer side surface of the test chamber 23 generates strain, the strain value at the middle position is the largest, so that the measurement is convenient.
In this embodiment, the filling valve 11 is a one-way valve, and the flow direction of the filling valve 11 is from the outside to the inside of the pressure chamber 2, so that the pressure maintenance of the pressure chamber 2 is facilitated.
In this embodiment, the opening pressure of relief valve 25 can be adjusted as required according to the experiment, and the flow direction of relief valve 25 is inside to outside of pressure chamber 2, is provided with like this and helps improving the utility model discloses testing arrangement's security realizes automatic pressure release under the dangerous operating mode.
in this embodiment, the control mechanism 3 can control the opening and closing of the motor 13 and the two-way solenoid valve 16 according to the control requirement, and this is provided with the automation degree of the testing device of the present invention.
In this embodiment, the inner holes of the support 21 and the cabin body 22 are in clearance fit connection, the support 21 and the test cabin 23 are also in clearance fit connection, and the length of the test cabin 23 inserted into the support 21 is 10% -30% of the height of the test cabin 23, so that the test cabin 23 can be positioned in the support 21, and the test cabin 23 is prevented from shaking in the pressurizing process.
In this embodiment, the connecting cable between watertight joint 32 and the signal transmitter 34 is flexible roll-up cable, and the connecting cable between terminal surface foil gage 35 and the circumference foil gage 36 is flexible roll-up cable, is provided with like this and helps improving the utility model discloses testing arrangement's maneuverability.
The test method of the device for testing the waterproof and pressure-resistant performance of the sealed cabin comprises the following steps:
1) The computer 31 is used for opening the two-way electromagnetic valve 16 firstly, then the motor 13 is started, the pressure pump 14 outputs high-pressure water under the driving of the motor 13, the high-pressure water sequentially passes through the two-way electromagnetic valve 16 and the water injection valve 11 and enters the pressure chamber 2, and meanwhile, the computer 31 collects and records output signals of the pressure sensor 33, the end face strain gauge 35 and the circumferential strain gauge 36 in real time;
2) When the pressure in the pressure chamber 2 reaches the required pressure, the computer 31 closes the motor 13 and the two-way electromagnetic valve 16 in sequence, if the test requires that the pressure in the pressure chamber 2 is kept for a period of time, the pressure in the pressure chamber 2 is maintained through closed-loop control of the control mechanism 3, and if the test does not require that the pressure in the pressure chamber 2 is kept, the pressure release valve 25 is opened to reduce the pressure in the pressure chamber 2 to the normal pressure; in the pressurizing process of the pressure chamber 2, if the computer 31 detects that obvious slow pressure rise or rapid pressure drop occurs in the pressure rising process of the pressure chamber 2, the waterproof failure of the test chamber 23 is indicated, the test process needs to be stopped, the pressure release valve 25 is opened, the pressure in the pressure chamber 2 is reduced to the normal pressure, the chamber cover 24 of the pressure chamber is opened, and whether the waterproof failure occurs in the test chamber 23 is checked;
3) During pressurization of pressure chamber 2, if computer 31 detects an abrupt strain signal, it indicates that test chamber 23 is about to fail in compressive strength; if the computer 31 detects that the pressure sharply drops and the strain signal sharply rises during the pressure rise of the pressure chamber 2, the pressure chamber 23 is indicated to have the compressive strength failure.
This implementation is before the experiment, pastes the center of terminal surface foil gage 35 at experimental cabin 23 up end, and circumference foil gage 36 pastes the middle part at experimental cabin 23 lateral surface, opens the cabin cover 24 of pressure chamber 2, puts into the bottom of pressure chamber 2 with support 21 in proper order, inserts experimental cabin 23 support 21, is connected terminal surface foil gage 35, the signal output part of circumference foil gage 36 and the input of signal transmitter 34, then covers the cabin cover 24 of pressure chamber 2.
In this embodiment, if the abrupt strain signal in step 3) is from the end face strain gage 35, it indicates that the end face of the test chamber 23 is about to fail in compressive strength, if the abrupt strain signal is from the circumferential strain gage 36, it indicates that the side face of the test chamber 23 is about to fail in compressive strength, if it is not desired that the test chamber 23 is crushed, it is necessary to stop the test process, open the relief valve 25, reduce the pressure in the pressure chamber 2 to the normal pressure, and if it is desired to obtain the pressure limit at which the test chamber 23 is crushed, the pressurization can be continued until the computer 31 simultaneously detects that the pressure in the pressure chamber 2 is sharply reduced and the strain signal is sharply increased.
The pressure curve of the pressure chamber in the pressurizing process of the embodiment is shown in fig. 2, the curve (II) in fig. 2 is a normal pressure curve, the curve (I) and the curve (III) are pressure curves when the test chamber is subjected to waterproof failure, the curve (I) is characterized in that the pressure is sharply reduced in the pressure increasing process of the pressure chamber, and the curve (III) is characterized in that the pressure is obviously slowly increased in the pressure increasing process of the pressure chamber.
The stress curve of the pressure chamber during pressurization in this example is shown in fig. 3, curve b is a normal stress curve, and curve a is a stress curve of the test chamber with strength failure.
The working principle and the advantages of the device for testing the waterproof and pressure-resistant performance of the sealed cabin are as follows: through the terminal surface and the side installation foil gage at test chamber 23, realized the real-time supervision that test chamber 23 terminal surface and side were met an emergency among the pressurization process, through at cabin cover 24 installation pressure sensor 33, realized the real-time supervision of 2 pressures in the pressurization process, through the judgement that monitors 2 pressure rising change curves in pressure chamber and realize test chamber 23 waterproof performance, whether take place the judgement that sudden change realized test chamber 23 pressure resistance through monitoring strain signal. Compared with the existing sealed cabin performance test device, the sealed cabin waterproof and pressure-resistant performance test device of the embodiment can not only realize the waterproof performance and pressure-resistant performance macro test of the test cabin 23, but also accurately acquire the load pressure of waterproof failure, the load pressure of pressure-resistant failure and the occurrence position of pressure-resistant failure of the test cabin 23, and simultaneously has the advantages of simple structure and convenient operation.
Claims (8)
1. The utility model provides a waterproof and compressive property testing arrangement of sealed cabin which characterized in that: the pressure chamber comprises a pressure generating mechanism (1), a pressure chamber (2) and a control mechanism (3), wherein the pressure chamber (2) comprises a support (21), a chamber body (22), a test chamber (23), a chamber cover (24) and a pressure relief valve (25), the support (21) is installed at the bottom end inside the chamber body (22), the test chamber (23) is installed on the support (21), the chamber cover (24) is installed above the chamber body (22), a sealing ring (26) is installed between the chamber cover (24) and the chamber body (22), and the pressure relief valve (25) is installed on the chamber cover (24); the control mechanism (3) comprises a computer (31), a watertight joint (32), a pressure sensor (33), a signal transmitter (34), an end face strain gauge (35) and a circumferential strain gauge (36), the watertight joint (32) and the pressure sensor (33) are respectively connected with the input end of the computer (31) through cables, the output end of the computer (31) is respectively connected with the pressure generating mechanism (1), the signal output ends of the end face strain gauge (35) and the circumferential strain gauge (36) are connected with the input end of the signal transmitter (34), and the output end of the signal transmitter (34) is connected with the watertight joint (32); the pressure generating mechanism (1) leads high-pressure water into the cabin body (22) through the water injection valve (11).
2. The device for testing the waterproof and pressure-resistant performance of the sealed cabin according to claim 1, wherein: the pressure generating mechanism (1) comprises a water tank (12), a motor (13), a pressure pump (14), a pressure gauge (15) and a two-way electromagnetic valve (16), wherein an output shaft of the motor (13) is connected with an input shaft of the pressure pump (14), an inlet and an outlet of the pressure pump (14) are respectively connected with inlets of the water tank (12) and the two-way electromagnetic valve (16), the pressure gauge (15) is installed at an outlet of the pressure pump (14), and an outlet of the two-way electromagnetic valve (16) is connected with an inlet of a water injection valve (11); and the control ends of the motor (13) and the two-way electromagnetic valve (16) are respectively connected with the output end of the computer (31).
3. The device for testing the waterproof and pressure-resistant performance of the sealed cabin according to claim 1 or 2, wherein: the end face strain gauge (35) is arranged in the center of the upper end face of the test chamber (23).
4. The device for testing the waterproof and pressure-resistant performance of the sealed cabin according to claim 1 or 2, wherein: the circumferential strain gauge (36) is arranged in the middle of the outer side surface of the test chamber (23).
5. The device for testing the waterproof and pressure-resistant performance of the sealed cabin according to claim 1 or 2, wherein: the water injection valve (11) is a one-way valve, and the flow direction of the water injection valve (11) is from the outside to the inside of the pressure chamber (2).
6. The device for testing the waterproof and pressure-resistant performance of the sealed cabin according to claim 1 or 2, wherein: the opening pressure of the pressure relief valve (25) can be adjusted according to test requirements, and the flow direction of the pressure relief valve (25) is from the inside to the outside of the pressure chamber (2).
7. The device for testing the waterproof and pressure-resistant performance of the sealed cabin according to claim 1 or 2, wherein: the inner holes of the support (21) and the cabin body (22) are in clearance fit connection, the support (21) and the test cabin (23) are also in clearance fit connection, and the length of the test cabin (23) inserted into the support (21) is 10% -30% of the height of the test cabin (23).
8. The device for testing the waterproof and pressure-resistant performance of the sealed cabin according to claim 1 or 2, wherein: the connecting cable between the watertight connector (32) and the signal transmitter (34) is a flexible furling cable, and the connecting cable between the end face strain gauge (35) and the circumferential strain gauge (36) is a flexible furling cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920162928.8U CN209745709U (en) | 2019-01-29 | 2019-01-29 | Waterproof and pressure resistance testing device for sealed cabin |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920162928.8U CN209745709U (en) | 2019-01-29 | 2019-01-29 | Waterproof and pressure resistance testing device for sealed cabin |
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| CN209745709U true CN209745709U (en) | 2019-12-06 |
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| CN201920162928.8U Active CN209745709U (en) | 2019-01-29 | 2019-01-29 | Waterproof and pressure resistance testing device for sealed cabin |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109738293A (en) * | 2019-01-29 | 2019-05-10 | 湖南工程学院 | A kind of sealed compartment waterproof and pressure-resistant performance testing device and its test method |
| CN112414858A (en) * | 2020-11-24 | 2021-02-26 | 天津航天瑞莱科技有限公司 | Underwater working equipment waterproofness detection test device |
-
2019
- 2019-01-29 CN CN201920162928.8U patent/CN209745709U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109738293A (en) * | 2019-01-29 | 2019-05-10 | 湖南工程学院 | A kind of sealed compartment waterproof and pressure-resistant performance testing device and its test method |
| CN112414858A (en) * | 2020-11-24 | 2021-02-26 | 天津航天瑞莱科技有限公司 | Underwater working equipment waterproofness detection test device |
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| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Yiyang Aiyi Information Technology Co.,Ltd. Assignor: HUNAN INSTITUTE OF ENGINEERING Contract record no.: X2023980050675 Denomination of utility model: A waterproof and pressure resistance testing device for sealed cabins Granted publication date: 20191206 License type: Common License Record date: 20231213 |
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| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Yiyang Chuangxing Technology Co.,Ltd. Assignor: HUNAN INSTITUTE OF ENGINEERING Contract record no.: X2023980052753 Denomination of utility model: A waterproof and pressure resistance testing device for sealed cabins Granted publication date: 20191206 License type: Common License Record date: 20231219 |
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| EE01 | Entry into force of recordation of patent licensing contract |