CN117309272A - Device for testing tightness of underwater cabin and use method - Google Patents

Device for testing tightness of underwater cabin and use method Download PDF

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Publication number
CN117309272A
CN117309272A CN202311104832.3A CN202311104832A CN117309272A CN 117309272 A CN117309272 A CN 117309272A CN 202311104832 A CN202311104832 A CN 202311104832A CN 117309272 A CN117309272 A CN 117309272A
Authority
CN
China
Prior art keywords
cabin
flange
testing
tightness
underwater
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202311104832.3A
Other languages
Chinese (zh)
Inventor
胡珍贵
傅荣荣
程伟锋
陈泽斌
陈希恰
苏洋
魏法军
申万秋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Hailanyun Data Center Technology Co ltd
Original Assignee
Shenzhen Hailanyun Data Center Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen Hailanyun Data Center Technology Co ltd filed Critical Shenzhen Hailanyun Data Center Technology Co ltd
Priority to CN202311104832.3A priority Critical patent/CN117309272A/en
Publication of CN117309272A publication Critical patent/CN117309272A/en
Pending legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
    • G01M3/32—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators
    • G01M3/3209—Details, e.g. container closure devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
    • G01M3/32—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators
    • G01M3/3236—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators by monitoring the interior space of the containers
    • G01M3/3272—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators by monitoring the interior space of the containers for verifying the internal pressure of closed containers

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Examining Or Testing Airtightness (AREA)

Abstract

The invention relates to the technical field of underwater cabin testing, in particular to a device for testing tightness of an underwater cabin and a use method thereof. An underwater cabin tightness testing device, comprising: a pressure gauge; the inflation tube is communicated with the pressure gauge, the flange is arranged in a lamination mode with the cabin body, two sealing rings arranged at intervals are arranged on the lamination surface between the flange and the cabin body, and one end of the inflation tube is suitable for being communicated with the lamination surface between two adjacent sealing rings. The invention solves the problems of long pressure maintaining time and high cost when the underwater cabin body is subjected to tightness test.

Description

Device for testing tightness of underwater cabin and use method
Technical Field
The invention relates to the technical field of underwater cabin testing, in particular to a device for testing tightness of an underwater cabin and a use method thereof.
Background
At present, after the cabin is sealed, the existing electrical equipment, service equipment and the like in the cabin can normally only bear about 85kPa-106kPa, and cannot bear high pressure, and further, after the cabin is sealed, the whole pressure sealing inspection of the cabin cannot be carried out according to the pressure bearing design pressure (such as 5 atmospheres) of the cabin.
The cabin sealing inspection is carried out by the scheme of vacuumizing negative pressure (such as 0.85 atmosphere), but the whole cabin vacuumizing pressure test time is long, and the pressure maintaining time is long after the negative pressure reaches the test pressure in order to verify the cabin sealing effect. Meanwhile, the negative pressure test is also influenced by the ambient temperature, the temperature difference between the morning and evening, the temperature difference between the beginning test and the ending test has influence on the result of the negative pressure test, and the consumption cost of the whole process is high.
Disclosure of Invention
Therefore, the invention aims to overcome the defects of long pressure maintaining time and high cost of the whole cabin body to be tested after vacuumizing when the underwater cabin body in the prior art is subjected to tightness test, and further provides a device for testing the tightness of the underwater cabin body and a use method thereof.
In order to solve the above problems, the present invention provides a device for testing tightness of an underwater cabin, comprising:
a pressure gauge;
the inflation tube is communicated with the pressure gauge, the flange is arranged in a lamination mode with the cabin body, two sealing rings arranged at intervals are arranged on the lamination surface between the flange and the cabin body, and one end of the inflation tube is suitable for being communicated with the lamination surface between two adjacent sealing rings.
Optionally, the joint surface is the joint of the terminal surface of flange and the terminal surface of the cabin, the joint surface between flange and the cabin is equipped with two at least sealing washer that the interval set up along circumference direction.
Optionally, the bonding surface is formed by bonding the outer peripheral surface of the flange and the inner peripheral surface of the cabin, and at least two sealing rings which are arranged at intervals are arranged on the bonding surface between the flange and the cabin along the axial direction; or, the joint surface is formed by jointing the inner peripheral surface of the flange and the outer peripheral surface of the cabin body, and at least two sealing rings which are arranged at intervals are arranged on the joint surface between the flange and the cabin body along the axial direction.
Optionally, the attaching surface is the attaching of the end surface of the flange and the end surface of the cabin, and the peripheral surface of the flange is attached to the peripheral surface of the cabin, at least one sealing ring is arranged between the end surface of the flange and the end surface of the cabin, and at least one sealing ring is arranged between the peripheral surface of the flange and the peripheral surface of the cabin.
Optionally, be equipped with the test hole between flange and the cabin body, the test hole link up the flange setting, the test hole is located between two sealing washer, gas tube intercommunication test hole.
Optionally, the number of the pressure gauges is at least two, and the bottom surface of the test hole is a fitting surface.
Optionally, the device further comprises a pneumatic pump and an opening and closing piece, wherein the pneumatic pump is communicated with one end of the air inflation tube, which is away from the test hole, and the opening and closing piece is arranged on the air inflation tube between the pneumatic pump and the test hole.
Optionally, the test device further comprises a cap, wherein the cap is rotationally connected with the test hole.
The application method of the underwater cabin tightness testing device comprises the steps of inflating the test hole through the inflation tube, recording an initial pressure value of the pressure gauge, and observing whether the measured pressure value of the pressure gauge is identical with the initial pressure value after pressure is maintained for a period of time so as to judge whether the tightness between the flange and the cabin is good.
Optionally, the controller opens the opening and closing member, starts the pneumatic pump to charge the gas with the preset pressure value into the test hole, records the initial pressure value of the pressure gauge, and observes whether the measured pressure value of the pressure gauge is the same as the initial pressure value after the pressure is maintained for a period of time.
The technical scheme of the invention has the following advantages:
1. the invention provides a device for testing the tightness of an underwater cabin, a pressure gauge; the inflation tube is communicated with the pressure gauge, the flange is attached to the cabin body, two sealing rings which are arranged at intervals are arranged on the attaching surface between the flange and the cabin body, and one end of the inflation tube is suitable for being communicated with the attaching surface between two adjacent sealing rings. The application provides a testing arrangement only needs to carry out the leakproofness test to the faying face between flange and the cabin body, need not to carry out the evacuation test to the cabin body is whole, compares in the time of whole evacuation spending. The testing device provided by the application has the advantages of short air charging time, short testing time and low testing cost, and can simultaneously detect the tightness of two sealing rings without considering the influence of temperature difference, and can not cause any damage to equipment in the cabin.
2. According to the device for testing the tightness of the underwater cabin, the joint surface is formed by joint of the end surface of the flange and the end surface of the cabin, and at least two sealing rings which are arranged at intervals are arranged on the joint surface between the flange and the cabin along the circumferential direction so as to be arranged at the joint position of the flange and the end surface of the cabin.
3. According to the device for testing the tightness of the underwater cabin, provided by the invention, the joint surface is formed by joint of the outer peripheral surface of the flange and the inner peripheral surface of the cabin, and at least two sealing rings which are arranged at intervals are arranged on the joint surface between the flange and the cabin along the axial direction; or the joint surface is formed by jointing the inner peripheral surface of the flange with the outer peripheral surface of the cabin body, and at least two sealing rings which are arranged at intervals are arranged on the joint surface between the flange and the cabin body along the axial direction. The sealing ring is arranged on the circumferential joint surface of the flange and the cabin body.
4. According to the device for testing the tightness of the underwater cabin, the joint surface is the joint of the end surface of the flange and the end surface of the cabin, the peripheral surface of the flange is jointed with the peripheral surface of the cabin, at least one sealing ring is arranged between the end surface of the flange and the end surface of the cabin, and at least one sealing ring is arranged between the peripheral surface of the flange and the peripheral surface of the cabin, so that the purpose of arranging the sealing rings on the joint surface of the end surface and the peripheral joint surface is achieved.
5. According to the device for testing the tightness of the underwater cabin, the testing holes are formed between the flange and the cabin and penetrate through the flange, the testing holes are located between the two sealing rings, and the air charging pipe is communicated with the testing holes. And (3) inflating the test hole through the inflation tube, recording an initial pressure value of the pressure gauge, and after the pressure is maintained for a period of time, observing whether the measured pressure value of the pressure gauge is the same as the initial pressure value so as to judge whether the tightness between the flange and the cabin body is good. When the test hole runs through the flange, the pressure value of the test hole is changed through the pressure gauge, when air leakage occurs on the joint surface between the flange and the cabin body, the pressure value can be changed, and then the leakage point is checked by a tester.
6. According to the device for testing the tightness of the underwater cabin, provided by the invention, the number of the pressure gauges is at least two, and the two pressure gauges are used for preventing the problem of inaccurate reading of one pressure gauge and avoiding the occurrence of misjudgment. The bottom surface of test hole is the fitting surface, and the fitting surface is the coincidence face when the terminal surface of flange and the terminal surface laminating of the cabin, and the fitting surface is the coincidence face when the outer peripheral face of flange and the laminating of cabin inner peripheral face or the coincidence face when the inner peripheral face of flange and the outer peripheral face laminating of the cabin because the bottom surface of test hole is the fitting surface to prevent that the test hole from causing the destruction of structure to the cabin.
7. The invention provides a device for testing the tightness of an underwater cabin, which also comprises a pneumatic pump and an opening and closing piece, wherein the pneumatic pump is communicated with one end of an inflation tube, which is away from a testing hole, namely, one end of the inflation tube is communicated with the testing hole, and the other end of the inflation tube is communicated with the pneumatic pump, and the pneumatic pump is used for filling gas with preset pressure into the testing hole. The opening and closing piece is arranged on the air charging pipe between the air pressure pump and the test hole, and the opening and closing piece is used for controlling the opening and closing of the air passage on the air charging pipe.
8. The device for testing the tightness of the underwater cabin body further comprises a cover cap, wherein the cover cap is rotationally connected with the test hole, and the cover cap seals the test hole when the test is not needed or is completed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a flange and a nacelle provided in a first embodiment of the present invention with dual sealing rings disposed in a circumferential direction;
FIG. 2 is a schematic view of an underwater tank tightness test apparatus according to a first embodiment of the present invention;
FIG. 3 is a schematic view of a flange and a nacelle provided in a second embodiment of the present invention with dual sealing rings disposed in an axial direction;
FIG. 4 is a schematic view of a device for testing the tightness of an underwater tank provided in a second embodiment of the present invention;
FIG. 5 is a schematic view of a dual seal ring provided between a flange and a nacelle according to a fourth embodiment of the invention;
fig. 6 is a schematic view of a device for testing tightness of an underwater cabin according to a fourth embodiment of the present invention.
Reference numerals illustrate: 1. a test well; 2. a flange; 3. a seal ring; 4. a cabin body; 5. an inflation tube; 6. a pressure gauge; 7. an opening and closing member; 8. a pneumatic pump; 9. and (3) capping.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. 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.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
Example 1
One embodiment of the device for testing the tightness of an underwater cabin shown in fig. 1 to 6 comprises: the inflation tube 5, be equipped with two manometers 6 on the inflation tube 5, the one end of inflation tube 5 is suitable for communicating the test hole 1 between the flange 2 cabin body 4.
As shown in fig. 1 and 2, the flange 2 is attached to the cabin body 4, wherein the attaching surface is the attaching of the end surface of the flange 2 and the end surface of the cabin body 4, two sealing rings 3 are arranged at intervals along the circumferential direction on the attaching surface of the flange 2 and the cabin body 4, the test hole 1 is arranged between the two sealing rings 3, and the test hole 1 penetrates through the flange 2. Specifically, the bonding surface is a plane, and the sealing ring 3 is an O-shaped sealing ring 3. In order to avoid damaging the cabin 4, the bottom surface of the test hole 1 is an attaching surface. In order to seal the test hole 1, the device also comprises a cap 9, and the cap 9 is in threaded rotation connection with the test hole 1.
As shown in fig. 2, the device further comprises a pneumatic pump 8 and an opening and closing member 7, wherein the pneumatic pump 8 is communicated with the air charging pipe 5, and the opening and closing member 7 is arranged on the air charging pipe 5 between the pneumatic pump 8 and the test hole 1. For the convenience of control, the hydraulic control device also comprises a controller which is respectively in communication connection with the pneumatic pump 8 and the opening and closing piece 7. Specifically, the opening and closing member 7 is an electromagnetic valve.
The using method of the device for testing the tightness of the underwater cabin 4 comprises the following steps: the controller opens the opening and closing piece 7, starts the pneumatic pump 8 to charge the gas of preset pressure value into the test hole 1, records the initial pressure value of two pressure gauges 6 respectively, and after the pressure is maintained for a period of time, observes whether the measured pressure value of two pressure gauges 6 is the same with the initial pressure value to judge the tightness of the space between two sealing rings 3. If the measured pressure value is the same as the initial pressure value, the sealing performance is good; if the measured pressure value is different from the initial pressure value, the sealing ring 3 is invalid, and a tester searches a leakage point. After the test is completed, cap 9 is screwed onto test well 1 to seal test well 1.
The utility model provides a testing arrangement of cabin body 4 leakproofness under water, compare in the evacuation test of evacuating cabin body 4 air, can not cause any damage to the equipment in the cabin body 4, and can test the leakproofness of two sealing rings 3, compare in the evacuation test to the test of a sealing ring 3, namely, only need in the evacuation test that a sealing ring 3 keeps well, under water cabin body 4 just can keep well, have the potential safety hazard, have the more effective advantage of experimental effect.
Example 2
As shown in fig. 3 and 4, the flange 2 is sleeved on the outer peripheral surface of the cabin body 4, that is, the bonding surface is formed by bonding the inner peripheral surface of the flange 2 and the outer peripheral surface of the cabin body 4, two sealing rings 3 arranged at intervals are arranged on the bonding surface between the flange 2 and the cabin body 4 along the axial direction, and the test hole 1 is arranged between the two sealing rings 3. Specifically, the bonding surface is a circumferential surface.
Example 3
The cabin body 4 is sleeved on the outer peripheral surface of the flange 2, namely, the joint surface is the joint of the outer peripheral surface of the flange 2 and the inner peripheral surface of the cabin body 4, two sealing rings 3 which are arranged at intervals are arranged on the joint surface between the flange 2 and the cabin body 4 along the axial direction, and the test hole 1 is arranged between the two sealing rings 3. Specifically, the bonding surface is a circumferential surface.
Example 4
As shown in fig. 5 and 6, the flange 2 is sleeved on the outer peripheral surface of the cabin 4 (or the cabin 4 is sleeved on the outer peripheral surface of the flange 2), that is, the joint surface is the joint between the end surface of the flange 2 and the end surface of the cabin 4, the peripheral surface of the flange 2 is in joint with the peripheral surface of the cabin 4, a sealing ring 3 is arranged between the end surface of the flange 2 and the end surface of the cabin 4, and a sealing ring 3 is arranged between the peripheral surface of the flange 2 and the peripheral surface of the cabin 4.
For large underwater tanks or containers containing electrical equipment, the following challenges are often encountered in testing the tightness: (1) The external pressure test condition is not met, namely, due to the fact that the volume of the container is too large, the proper test condition is difficult to find; (2) When the underwater cabin body provided with equipment is subjected to a water immersion test, the leakage is subjected to larger equipment damage once; (3) Even if the underwater cabin or container can be subjected to an internal pressure test, the tightness detection of the internal pressure test cannot be detected for a part of the sealing ring far away from the internal pressure test, and the specific position where the sealing ring has a problem cannot be determined. The testing device provided by the application solves the problems, the sealing test can be unfolded without searching proper test conditions or carrying out a soaking test, and meanwhile, the specific position of the sealing ring with the problem can be determined.
As an alternative embodiment, the number of pressure gauges 6 may also be 1, 3 or even more.
As an alternative embodiment, the number of sealing rings 3 may also be 3, 4, 5 or even more, and one test hole 1 is provided between two adjacent sealing rings 3.
As an alternative embodiment, the cap 9 and the test hole 1 may be sealed by clamping or other means.
As an alternative embodiment, the control may also be performed by the tester in situ without the controller.
As an alternative embodiment, the pneumatic pump 8 may be replaced by a nitrogen-filled gas, which is depressurized to serve as a pneumatic source.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present invention.

Claims (10)

1. A device for testing the tightness of an underwater cabin, which is suitable for testing the tightness between a flange and the cabin, and is characterized by comprising:
a pressure gauge (6);
the inflation tube (5) is communicated with the pressure gauge (6), the flange (2) is attached to the cabin body (4), two sealing rings which are arranged at intervals are arranged on the attaching surface between the flange (2) and the cabin body (4), and one end of the inflation tube (5) is suitable for being communicated with the attaching surface between two adjacent sealing rings (3).
2. The device for testing the tightness of the underwater cabin according to claim 1, wherein the joint surface is joint of the end surface of the flange (2) and the end surface of the cabin (4), and at least two sealing rings (3) arranged at intervals are arranged on the joint surface between the flange (2) and the cabin (4) along the circumferential direction.
3. The device for testing the tightness of the underwater cabin according to claim 1, wherein the joint surface is formed by joint of the outer peripheral surface of the flange (2) and the inner peripheral surface of the cabin (4), and at least two sealing rings (3) which are arranged at intervals are arranged on the joint surface between the flange (2) and the cabin (4) along the axial direction; or, the joint surface is formed by jointing the inner peripheral surface of the flange (2) and the outer peripheral surface of the cabin body (4), and at least two sealing rings (3) which are arranged at intervals are arranged on the joint surface between the flange (2) and the cabin body (4) along the axial direction.
4. The device for testing the tightness of the underwater cabin according to claim 1, wherein the bonding surface is bonding between the end surface of the flange (2) and the end surface of the cabin (4), the peripheral surface of the flange (2) is bonded to the peripheral surface of the cabin (4), at least one sealing ring is arranged between the end surface of the flange (2) and the end surface of the cabin (4), and at least one sealing ring (3) is arranged between the peripheral surface of the flange (2) and the peripheral surface of the cabin (4).
5. The device for testing the tightness of the underwater cabin according to any one of claims 1 to 4, wherein a testing hole (1) is arranged between the flange (2) and the cabin (4), the testing hole (1) is arranged to penetrate through the flange (2), the testing hole is arranged between the two sealing rings (3), and the air charging pipe (5) is communicated with the testing hole (1).
6. The device for testing the tightness of the underwater cabin according to claim 5, wherein the number of the pressure gauges (6) is at least two, and the bottom surface of the testing hole (1) is an attaching surface.
7. The device for testing the tightness of the underwater cabin according to claim 6, further comprising a pneumatic pump (8) and an opening and closing member (7), wherein the pneumatic pump (8) is communicated with one end of the air charging pipe (5) deviating from the testing hole (1), and the opening and closing member (7) is arranged on the air charging pipe (5) between the pneumatic pump (8) and the testing hole (1).
8. The device for testing the tightness of the underwater capsule according to claim 7, further comprising a cap (9), wherein the cap (9) is rotatably connected with the test hole (1).
9. The use method of the device for testing the tightness of the underwater cabin body is characterized in that the inflation tube (5) is used for inflating the test hole (1) and recording the initial pressure value of the pressure gauge (6), and after the pressure is maintained for a period of time, whether the measured pressure value of the pressure gauge (6) is the same as the initial pressure value is observed to judge whether the tightness between the flange (2) and the cabin body (4) is good or not.
10. The use method of the underwater cabin tightness testing device according to claim 9, wherein the opening and closing piece (7) is opened, the pneumatic pump (8) is started to charge gas with a preset pressure value into the testing hole (1), the initial pressure value of the pressure gauge (6) is recorded, and after the pressure is maintained for a period of time, whether the measured pressure value of the pressure gauge (6) is identical to the initial pressure value is observed.
CN202311104832.3A 2023-08-30 2023-08-30 Device for testing tightness of underwater cabin and use method Pending CN117309272A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311104832.3A CN117309272A (en) 2023-08-30 2023-08-30 Device for testing tightness of underwater cabin and use method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311104832.3A CN117309272A (en) 2023-08-30 2023-08-30 Device for testing tightness of underwater cabin and use method

Publications (1)

Publication Number Publication Date
CN117309272A true CN117309272A (en) 2023-12-29

Family

ID=89261162

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311104832.3A Pending CN117309272A (en) 2023-08-30 2023-08-30 Device for testing tightness of underwater cabin and use method

Country Status (1)

Country Link
CN (1) CN117309272A (en)

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