Test tank for simulating underwater pressure and test method thereof

Abstract

The present invention belongs to the field of pressure testing technology, and in particular, relates to a test tank simulating underwater pressure and a test method thereof. The present invention provides a test tank simulating underwater pressure, comprising: a tank body; an inflation system, which is suitable for conveying compressed gas into a device to be tested; a pressure regulating system, which is respectively connected to the tank body and a water tank, and is suitable for adjusting the pressure value in the tank body; a support structure, one end of which is hinged to the side wall of the tank body; an airtight door, which is adapted to the tank body and is rotatably arranged on the side wall of the support structure; wherein, the device to be tested is placed in the tank body, and the inflation system conveys compressed gas to a preset value into the device to be tested; the support structure rotates with the hinge point as the axis until the airtight door abuts against the tank body, and the airtight door is rotated circumferentially to seal the tank body; the pressure regulating system circulates and conveys liquid into the tank body and discharges it to detect the airtightness of the device to be tested.

Description

Technical Field

[0001] The invention belongs to the technical field of pressure testing, and specifically relates to testing of mechanical parts, and in particular to a testing tank simulating underwater pressure and a testing method thereof. Background Art

[0002] Airtight equipment, especially airtight equipment used underwater, needs to repeatedly release gas into the equipment to be tested to complete the alternating test. After the test is completed, the equipment to be tested is placed in a container filled with water and the internal air is inflated and pressure maintained to detect leaks.

[0003] However, the external working pressure of the equipment to be tested cannot be simulated, the internal / external pressure cannot be controlled and adjusted, and the internal / external pressure resistance and leakage of the equipment cannot be truly simulated; moreover, manual pressurization requires many pressure alternation tests, long charging and discharging times, and high labor and material costs; and when leakage occurs, it cannot be discovered and stopped in time, resulting in a lot of ineffective work later.

[0004] Moreover, when the device to be tested is placed in the test tank, the sealed door of the test tank is relatively thick and heavy, and manual opening and closing of the door is time-consuming and laborious, especially in the process of the sealed door moving from a closed state to an open state, a lot of force is required to push it open.

[0005] Therefore, how to solve the problem that the internal and external pressures of the equipment to be tested cannot be controlled and adjusted is a technical problem that needs to be solved urgently.

[0006] It should be noted that the above information disclosed in this background technology section is only used to understand the background technology of the present application concept, and therefore, the above description is not considered to constitute information of the prior art. Summary of the invention

[0007] The disclosed embodiments at least provide a test tank for simulating underwater pressure and a test method thereof.

[0008] In a first aspect, an embodiment of the present disclosure provides a test tank for simulating underwater pressure, comprising:

[0009] Tank body;

[0010] a gas filling system adapted to deliver compressed gas into the device to be inspected;

[0011] A pressure regulating system, which is connected to the tank body and the water tank respectively, and is suitable for adjusting the pressure value in the tank body;

[0012] A support structure, one end of which is hinged to the side wall of the tank body;

[0013] An airtight door adapted to the tank body and rotatably disposed on the side wall of the supporting structure;

[0014] Therein, the device to be tested is placed in the tank body, and the inflation system delivers compressed gas to a preset value into the device to be tested;

[0015] The support structure rotates around the hinge point until the airtight door abuts against the tank body, and the airtight door is rotated circumferentially to seal the tank body;

[0016] The pressure regulating system circulates liquid into the tank body and discharges it to detect the air tightness of the equipment to be tested.

[0017] In an optional embodiment, the support structure includes:

[0018] Frame base;

[0019] The support frame is approximately "L" shaped, one end of which is connected to the outer end surface of the airtight door, and the other end is hinged to the frame base through a rotating shaft;

[0020] An adjusting member passes through the support frame and is drivingly connected to the outer wall of the airtight door, wherein the adjusting member is suitable for driving the airtight door to rotate synchronously when rotating circumferentially to open or seal the tank body.

[0021] In an optional embodiment, the outer wall of the airtight door is provided with a linear rack along the circumferential direction;

[0022] The end of the regulating member close to the airtight door is provided with a gear, and the gear is meshed with the linear rack; the outer wall of the airtight door is provided with a self-locking member close to the linear rack, and the self-locking member is adapted to the gear;

[0023] Wherein, when the gear rotates circumferentially until the airtight door seals the tank body, the self-locking part is suitable for the limit adjustment part to rotate in the opposite direction.

[0024] In an optional embodiment, the adjusting member includes: a transmission shaft, which passes through the support frame and rotates relative to the support frame;

[0025] The limiting block is arranged on the outer wall of the transmission shaft and is slidably arranged in the arc groove inside the supporting frame.

[0026] In an optional embodiment, a flow channel is provided in the support frame, one end of the flow channel extends toward the arc groove, and the other end of the flow channel extends toward the rotating shaft, and liquid is filled in the flow channel.

[0027] In an optional embodiment, a receiving groove is provided inside one end of the support frame close to the rotating shaft, and the receiving groove is communicated with the flow channel;

[0028] A limit plate is fixed to the outer wall of the rotating shaft, and the outer wall of the limit plate is slidably sealed with the side wall of the accommodating groove;

[0029] When the limit block rotates counterclockwise in the arc groove, the limit block is suitable for squeezing the liquid in the flow channel;

[0030] When the liquid is squeezed, it is suitable for pushing the limit plate to facilitate the support frame to rotate relative to the rotating shaft.

[0031] In an optional embodiment, an adjusting groove is provided at one end of the containing groove away from the flow channel;

[0032] A regulating valve is slidably arranged on the limit plate, and the regulating valve is suitable for being inserted into the regulating groove.

[0033] In an optional embodiment, a linkage plate is slidably disposed in the receiving groove, the linkage plate is suitable for rotating relative to the rotating shaft, and the linkage plate is linked to the limit block through a rope;

[0034] When the limiting block rotates clockwise in the arc groove, it is suitable for pulling the linkage plate to move toward the limiting plate.

[0035] In an optional embodiment, a pressure sensor is provided on one side of the limit plate close to the linkage plate, which is suitable for monitoring the liquid pressure between the linkage plate and the limit plate;

[0036] The limit plate is provided with a one-way valve which is in electrical communication with the pressure sensor;

[0037] Among them, after the pressure sensor detects that the liquid pressure reaches a preset value, the one-way valve opens and the linkage plate is suitable for pushing the liquid to flow into the flow channel.

[0038] In an optional embodiment, the inflation system includes: a gas supply bottle, which is connected to the device to be detected in the tank body through a pipeline;

[0039] Gas circuit stop valve, which is installed on the pipeline to open and close the pipeline;

[0040] The air pressure sensor is arranged on the pipeline between the air circuit stop valve and the device to be detected to monitor the pressure inside the device to be detected.

[0041] In an optional embodiment, the pressure regulating system includes: a water tank, which is connected to the tank body through a water supply pipeline;

[0042] A hydraulic pump, which is arranged on the water supply pipeline and is suitable for conveying liquid into the tank body;

[0043] A solenoid valve is provided on the water return pipeline between the tank body and the water tank to open and close the water return pipeline;

[0044] The pressure sensor is adapted to detect the pressure in the tank body and is in electrical signal communication with the water pressure pump.

[0045] In a second aspect, the present disclosure also provides a method for testing an underwater pressure test tank, including:

[0046] The device to be tested is placed in the tank body, and the inflation system stops supplying gas after delivering compressed gas to the preset value into the device to be tested;

[0047] The support structure rotates around the hinge point until the airtight door abuts against the tank body, and the airtight door is rotated circumferentially to seal the tank body;

[0048] The pressure regulating system circulates liquid into the tank body and discharges it to detect the air tightness of the equipment to be tested.

[0049] The beneficial effect of the present invention is that the test tank simulating underwater pressure of the present invention can quickly and automatically perform the external pressure resistance alternating test of the equipment to be tested through the setting of the inflation system and the pressure regulating system, and monitor the internal pressure change of the equipment to be tested in real time, and timely determine whether the equipment to be tested has leakage from the outside to the inside, automatically charge and discharge the pressure, greatly shorten the time, and can achieve unmanned operation, high efficiency and low cost. The setting of the support structure makes it easy for the operator to open the airtight door easily, reducing the work intensity.

[0050] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description, claims and drawings.

[0051] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, this article specifically cites preferred embodiments and provides detailed descriptions as follows in conjunction with the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0053] Figure 1 A schematic diagram of a test tank for simulating underwater pressure provided by an embodiment of the present disclosure;

[0054] Figure 2 A perspective view of a test tank for simulating underwater pressure provided by an embodiment of the present disclosure;

[0055] Figure 3 A perspective view of an airtight door and a support structure provided for an embodiment of the present disclosure;

[0056] Figure 4 A transverse cross-sectional perspective view of a support structure provided for an embodiment of the present disclosure;

[0057] Figure 5 A longitudinal sectional perspective view of a support structure provided for an embodiment of the present disclosure;

[0058] Figure 6 A schematic diagram of the state of the airtight door sealing tank body provided in an embodiment of the present disclosure;

[0059] Figure 7 A schematic diagram of a rotation state of a support frame relative to a rotation axis provided in an embodiment of the present disclosure;

[0060] Figure 8 A schematic diagram of the open state of the airtight door provided in an embodiment of the present disclosure.

[0061] In the figure:

[0062] 1. Tank body;

[0063] 2. Inflating system; 21. Gas supply bottle; 22. Gas circuit stop valve; 23. Air pressure sensor;

[0064] 3. Pressure regulating system; 31. Water tank; 32. Water pressure pump; 33. Solenoid valve; 34. Pressure sensor; 35. Pressure relief valve; 36. Pressure gauge;

[0065] 4. Support structure; 41. Frame base; 42. Rotating shaft; 420. Limiting plate; 421. Regulating valve;

[0066] 43, support frame; 430, flow channel; 431, arc groove; 432, receiving groove; 433, adjusting groove; 434, linkage plate;

[0067] 44. adjusting member; 440. gear; 441. transmission shaft; 442. limit block;

[0068] 5. Airtight door; 51. Linear rack. DETAILED DESCRIPTION

[0069] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0070] In this article, when it is mentioned that the first component is located on the second component, this may mean that the first component may be directly formed on the second component, or the third component may be interposed between the first component and the second component. In addition, in the drawings, in order to effectively describe the technical content, the thickness of the components may be exaggerated or reduced.

[0071] Herein, example embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as "at least one of..." modify the entire list of elements when following a list of elements, rather than modifying individual elements in the list. For example, the expression "at least one of a, b, and c" should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0072] The terms used herein are only used to describe specific exemplary configurations and are not intended to be limited. As used herein, the singular articles "one", "an" and "the" may also be intended to include plural forms, unless it is clearly indicated above that this is not the case. The terms "comprise", "include" and "have" are inclusive, and therefore specify the presence of features, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components and / or combinations thereof. The method steps, processes and operations described herein should not be interpreted as necessarily requiring them to be performed in the specific order discussed or shown, unless specifically identified as an execution order. Additional or alternative steps may be adopted.

[0073] As used herein, the phrases "in one embodiment," "according to one embodiment," "in some embodiments," and the like generally refer to the fact that the particular feature, structure, or characteristic following the phrase may be included in at least one embodiment of the present disclosure. Therefore, a particular feature, structure, or characteristic may be included in more than one embodiment of the present disclosure, so that these phrases do not necessarily refer to the same embodiment. As used herein, the terms "example," "exemplary," and the like are used to "serve as an example, instance, or illustration." Any implementation, aspect, or design described herein as "example" or "exemplary" is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. On the contrary, the use of the terms "example," "exemplary," and the like is intended to present concepts in a concrete manner.

[0074] Research has found that the shortcomings of the existing technology are: the external working pressure of the equipment to be tested cannot be simulated, the internal / external pressure cannot be controlled and adjusted, and the internal / external pressure resistance and leakage of the equipment cannot be truly simulated; moreover, manual pressurization requires a large number of pressure alternating tests, a long charging and discharging time, and high manpower and material costs; and, when leakage occurs, it cannot be discovered and the test cannot be stopped in time, resulting in a lot of invalid work afterwards.

[0075] Moreover, when the device to be tested is placed in the test tank, the sealed door of the test tank is relatively thick and heavy, and manual opening and closing of the door is time-consuming and laborious, especially in the process of the sealed door moving from a closed state to an open state, a lot of force is required to push it open.

[0076] Therefore, how to solve the problem that the internal / external pressure of the equipment to be tested cannot be controlled and adjusted is a technical problem that needs to be solved urgently.

[0077] The defects existing in the above solutions are the results obtained by the inventor after practice and careful research. Therefore, the discovery process of the above problems and the solutions proposed by the present invention in this article for the above problems should be the contributions made by the inventor to the present invention during the disclosure process.

[0078] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0079] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0080] like Figures 1 to 8As shown, some embodiments provide a test tank for simulating underwater pressure, including: a tank body 1; the interior of which is hollow, and the tank body 1 is a pressure vessel. The internal pressure of the tank body 1 is above 9.8MPa, and can withstand 0~4.5MPa, 2000 impact tests. An inflation system 2, which is suitable for delivering compressed gas to the equipment to be tested; the inflation system 2 is arranged on one side of the tank body 1; a pressure regulating system 3, which is connected to the tank body 1 and the water tank 31 respectively, and is suitable for adjusting the pressure value in the tank body 1; a support structure 4, one end of which is hinged on the side wall of the tank body 1; an airtight door 5, which is adapted to the tank body 1 and is rotatably arranged on the side wall of the support structure 4; a plurality of protrusions are fixed circumferentially on the side wall of the airtight door 5, and a plurality of grooves adapted to the protrusions are opened on the side wall of the tank body 1. When the protrusions are inserted into the grooves, the airtight door 5 is rotated circumferentially, and the protrusions gradually slide into the grooves. At this time, the airtight door 5 is suitable for sealing the tank body 1. Among them, the device to be tested is placed in the tank body 1, and the inflation system 2 delivers compressed gas to the preset value into the device to be tested; the support structure 4 rotates with the hinge point as the axis until the airtight door 5 abuts against the tank body 1, and the airtight door 5 is rotated circumferentially to seal the tank body 1; the pressure regulating system 3 circulates and delivers liquid into the tank body 1 and discharges it to detect the airtightness of the device to be tested. Through the setting of the inflation system 2 and the pressure regulating system 3, the external pressure resistance alternating test of the device to be tested can be carried out quickly and automatically, and the internal pressure change of the device to be tested can be monitored in real time, and whether the device to be tested has leakage from the outside to the inside can be determined in time, and the pressure can be automatically charged and discharged, which greatly shortens the time, can realize unmanned operation, and has high efficiency and low cost. The setting of the support structure 4 makes it easy for the operator to open the airtight door 5 easily, reducing the work intensity.

[0081] Reference Figure 3 , the support structure 4 comprises: a frame base 41, which is arranged on the side wall of the tank body 1;

[0082] The support frame 43 is approximately "L"-shaped, one end of which is connected to the outer end surface of the airtight door 5, and the other end is hinged to the frame base 41 through a rotating shaft 42;

[0083] The airtight door 5 is rotatably arranged on the other side wall of the support frame 43; after the airtight door 5 abuts against the tank body 1, the airtight door 5 is rotated circumferentially, and the airtight door 5 is locked with the tank body 1 to achieve the effect of sealing the tank body 1. The adjusting member 44 runs through the support frame 43, and the adjusting member 44 rotates circumferentially relative to the support frame 43, and is transmission-connected with the outer wall of the airtight door 5, wherein the adjusting member 44 is suitable for driving the airtight door 5 to rotate synchronously when rotating circumferentially to open or seal the tank body 1. When the support frame 43 rotates circumferentially relative to the rotating shaft 42, the airtight door 5 is driven to rotate in a direction away from the tank body 1 with the rotating shaft 42 as the axis.

[0084] Reference Figure 3, the outer wall of the airtight door 5 is provided with a linear rack 51 along the circumferential direction; the linear rack 51 is provided at the outer wall of the airtight door 5 near the adjusting member 44. The adjusting member 44 is provided with a gear 440 at the end near the airtight door 5, and the gear 440 is meshed with the linear rack 51; when the adjusting member 44 rotates circumferentially relative to the support frame 43, it is suitable for driving the airtight door 5 to rotate circumferentially relative to the tank body 1 until the protrusion on the side wall of the airtight door 5 is disengaged from the groove on the side wall of the tank body 1. When the support frame 43 is turned outward with the fixed axis as the axis, it is suitable for driving the airtight door 5 away from the tank body 1. A self-locking member is provided at the outer wall of the airtight door 5 near the linear rack 51, and the self-locking member is adapted to the gear 440; wherein, when the gear 440 rotates circumferentially until the airtight door 5 seals the tank body 1, the self-locking member is suitable for the limit adjusting member 44 to rotate in the opposite direction. When the airtight door 5 needs to be opened, the self-locking member is disengaged from the gear 440. At this time, the adjusting member 44 is rotated in the reverse direction, and the gear 440 is suitable for driving the airtight door 5 to rotate in the reverse direction.

[0085] Reference Figure 4 The adjusting member 44 includes: a transmission shaft 441, which passes through the support frame 43 and rotates relative to the support frame 43; a limit block 442, which is arranged on the outer wall of the transmission shaft 441 and is slidably arranged in the arc groove 431 inside the support frame 43.

[0086] Reference Figure 5 The support frame 43 has an arc groove 431, which is arranged above the transmission shaft 441, and the limit block 442 is slidably sealed with the arc groove 431. The hand wheel is arranged at one end of the transmission shaft 441 away from the gear 440, and the operator drives the gear 440 to rotate forward and reversely through the hand wheel.

[0087] Reference Figure 4 , a flow channel 430 is provided in the support frame 43, one end of the flow channel 430 extends to the circular arc groove 431, and the other end of the flow channel 430 extends to the rotating shaft 42, and the flow channel 430 is filled with liquid. When the gear 440 drives the airtight door 5 to seal the tank body 1, the limit block 442 is located at the rightmost end of the circular arc groove 431, and at this time, the circular arc groove 431 and the flow channel 430 are filled with liquid. When the airtight door 5 needs to be opened, the transmission shaft 441 rotates counterclockwise, and the limit block 442 slides from the rightmost end of the circular arc groove 431 to the left, and the limit block 442 pushes and squeezes the day in the circular arc groove 431, so that it flows into the flow channel 430, and the liquid in the flow channel 430 is suitable for pushing the limit plate 420, so that the support frame 43 can rotate circumferentially relative to the rotating shaft 42.

[0088] Reference Figure 4 and Figure 7, a receiving groove 432 is provided inside one end of the support frame 43 close to the rotating shaft 42, and the receiving groove 432 is semi-circular. The receiving groove 432 is in communication with the flow channel 430; the rotating shaft 42 is rotatably arranged in the receiving groove 432; a limit plate 420 is fixedly arranged on the outer wall of the rotating shaft 42, the limit plate 420 is axially arranged along the rotating shaft 42, and the outer wall of the limit plate 420 is slidably sealed with the side wall of the receiving groove 432; after the liquid in the flow channel 430 flows into the receiving groove 432, the liquid is suitable for pushing the limit plate 420, and the thrust of the liquid on the limit plate 420 facilitates the rotation of the support frame 43 relative to the rotating shaft 42. Among them, when the transmission shaft 441 rotates counterclockwise, the limit block 442 moves synchronously, and the limit block 442 rotates counterclockwise in the circular arc groove 431. The limit block 442 is suitable for squeezing the liquid in the flow channel 430 to make it flow into the flow channel 430; when the liquid is squeezed, it is suitable for pushing the limit plate 420 to make the support frame 43 rotate clockwise relative to the rotating shaft 42. The thrust of the fluid on the limit plate 420 makes it easier for the support frame 43 to rotate relative to the rotating shaft 42, thereby reducing the resistance of the operator to open the airtight door 5.

[0089] Reference Figure 7 In order to avoid excessive pressure of the fluid in the receiving groove 432, an adjusting groove 433 is provided at one end of the receiving groove 432 away from the flow channel 430; a regulating valve 421 is slidably provided on the limit plate 420, and the regulating valve 421 is suitable for being inserted into the regulating groove 433. When the outer wall of the regulating valve 421 abuts against the inner wall of the receiving groove 432, the liquid in the flow channel 430 cannot flow through the limit plate 420 into the space between the limit plate 420 and the linkage plate 434; and when the support frame 43 rotates until the regulating valve 421 is located at the regulating groove 433, the regulating valve 421 slides outward and is inserted into the regulating groove 433. At this time, the regulating valve 421 is in an open state, and the liquid in the flow channel 430 is suitable for passing through the regulating valve 421 and flowing into the space between the limit plate 420 and the linkage plate 434.

[0090] Reference Figure 7, further, a linkage plate 434 is slidably provided in the receiving groove 432, and the linkage plate 434 is slidably sealed with the inner wall of the receiving groove 432. The linkage plate 434 is suitable for rotating relative to the rotating shaft 42, and the linkage plate 434 is linked with the limit block 442 through a rope; wherein, when the limit block 442 rotates clockwise in the arc groove 431, it is suitable for pulling the linkage plate 434 to move it toward the limit plate 420. A pressure sensor 34 is provided on the side of the limit plate 420 close to the linkage plate 434, which is suitable for monitoring the liquid pressure between the linkage plate 434 and the limit plate 420; a one-way valve is provided on the limit plate 420, which is electrically connected with the pressure sensor 34; wherein, after the pressure sensor 34 detects that the liquid pressure reaches a preset value, the one-way valve opens, and the linkage plate 434 is suitable for pushing the liquid to flow toward the flow channel 430.

[0091] Reference Figure 1 The inflation system 2 includes: a gas supply bottle 21, which is connected to the device to be detected in the tank body 1 through a pipeline; preferably, pressurized nitrogen is stored in the gas supply bottle 21. A gas circuit stop valve 22 is arranged on the pipeline to open and close the pipeline; an air pressure sensor 23 is arranged on the pipeline between the gas circuit stop valve 22 and the device to be detected to monitor the pressure inside the device to be detected. When nitrogen needs to be transported to the device to be detected, first open the gas circuit stop valve 22, and then open the valve of the gas supply bottle 21. Nitrogen is transported to the device to be detected through the pipeline. The air pressure sensor 23 is suitable for real-time detection of the pressure inside the device to be detected. When the pressure reading in the air pressure sensor 23 reaches the set value, close the gas circuit stop valve 22.

[0092] Reference Figure 1 The pressure regulating system 3 comprises: a water tank 31, which is connected to the tank body 1 through a water supply pipeline; the water tank 31 is filled with water, and the volume of the water in the water tank 31 is greater than the volume inside the tank body 1. A hydraulic pump 32 is arranged on the water supply pipeline, and the hydraulic pump 32 is suitable for conveying liquid into the tank body 1; an electromagnetic valve 33 is arranged on the return water pipeline between the tank body 1 and the water tank 31 to open and close the return water pipeline; when the electromagnetic valve 33 is opened, the water in the tank body 1 is suitable for flowing to the water tank 31 through the return water pipeline. A pressure sensor 34 is suitable for detecting the pressure in the tank body 1, and is connected to the hydraulic pump 32 by electrical signals.

[0093] The tank body 1 is provided with a pressure gauge 36, which is suitable for detecting the pressure of the liquid in the valve body. A pressure relief pipe is provided between the tank body 1 and the water tank 31, and a pressure relief valve 35 is provided on the pressure relief pipe. When the pressure in the tank body 1 is too high, the pressure relief valve 35 is suitable for conveying the liquid in the valve body to the water tank 31.

[0094] The control center is connected to the hydraulic pump 32, the solenoid valve 33, the pressure sensor 34, the pressure relief valve 35 and the pressure gauge 36 by electrical signals. After receiving the signal from any of the above components, the control center is suitable for driving other corresponding components to work or stop working.

[0095] Some embodiments provide a method for testing an underwater pressure test tank, the method comprising:

[0096] The device to be tested is placed in the tank body 1, and the gas filling system 2 delivers compressed gas to the device to be tested to a preset value, and then stops delivering gas;

[0097] The support structure 4 rotates around the hinge point until the airtight door 5 abuts against the tank body 1, and the airtight door 5 rotates circumferentially to seal the tank body 1;

[0098] The pressure regulating system 3 circulates and delivers liquid into the tank body 1 and discharges it to detect the air tightness of the equipment to be tested.

[0099] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0100] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, terms such as "first", "second" and other numerical terms do not imply an order or sequence when used in this document unless explicitly indicated above. Therefore, without departing from the teachings of the example embodiments, the first element, component, region, layer or section discussed above may be referred to as a second element, component, region, layer or section.

[0101] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A test tank for simulating underwater pressure, characterized in that: include: Tank body (1); An air filling system (2) adapted to deliver compressed gas into the device to be tested; A pressure regulating system (3), which is respectively connected to the tank body (1) and the water tank (31), and is suitable for regulating the pressure value in the tank body (1); A support structure (4), one end of which is hinged to the side wall of the tank body (1); An airtight door (5) adapted to the tank body (1) and rotatably disposed on a side wall of the support structure (4); The device to be tested is placed in the tank body (1), and the gas filling system (2) delivers compressed gas to a preset value into the device to be tested; The support structure (4) rotates around the hinge point until the airtight door abuts against the tank body (1), and the airtight door is rotated circumferentially to seal the tank body (1); The pressure regulating system (3) circulates liquid into the tank body (1) and discharges it to detect the air tightness of the equipment to be tested; The support structure (4) comprises: A frame base (41) is arranged on the side wall of the tank body (1); The support frame (43) is approximately L-shaped, one end of which is connected to the outer end surface of the airtight door (5), and the other end is hinged to the frame base (41) via a rotating shaft (42); an adjusting member (44) which passes through the support frame (43) and is drivingly connected to the outer wall of the airtight door, wherein the adjusting member (44) is suitable for driving the airtight door to rotate synchronously when rotating circumferentially, so as to open or seal the tank body (1); The outer wall of the airtight door is provided with a linear rack (51) along the circumferential direction; A gear (440) is provided at the end of the regulating member (44) close to the airtight door, and the gear (440) and the linear rack (51) are meshed with each other; a self-locking member is provided on the outer wall of the airtight door close to the linear rack (51), and the self-locking member is adapted to the gear (440); Wherein, when the gear (440) rotates circumferentially until the airtight door seals the tank body (1), the self-locking member is adapted to cause the limit adjustment member (44) to rotate in the opposite direction; The adjusting member (44) comprises: a transmission shaft (441) which passes through the support frame (43) and rotates relative to the support frame (43); A limit block (442) is arranged on the outer wall of the transmission shaft (441) and is slidably arranged in the circular arc groove (431) inside the support frame (43); A circular arc groove (431) is provided in the support frame (43), the circular arc groove (431) is arranged above the transmission shaft (441), and the limit block (442) is slidably sealed with the circular arc groove (431); A flow channel (430) is provided in the support frame (43), one end of the flow channel (430) extends toward the arc groove (431), and the other end of the flow channel (430) extends toward the rotating shaft (42), and liquid is filled in the flow channel (430); An accommodating groove (432) is provided inside one end of the support frame (43) close to the rotating shaft (42), and the accommodating groove (432) is communicated with the flow channel (430); A limit plate (420) is fixedly provided on the outer wall of the rotating shaft (42), and the outer wall of the limit plate (420) is slidably sealed with the side wall of the containing groove (432); When the limiting block (442) rotates counterclockwise in the arc groove (431), the limiting block (442) is suitable for squeezing the liquid in the flow channel (430); When the liquid is squeezed, it is suitable for pushing the limit plate (420) to facilitate the support frame (43) to rotate relative to the rotating shaft (42).

2. The test tank for simulating underwater pressure as claimed in claim 1, characterized in that: An adjusting groove (433) is formed at one end of the containing groove (432) away from the flow channel (430); A regulating valve (421) is slidably disposed on the limiting plate (420), and the regulating valve (421) is suitable for being inserted into the regulating groove (433).

3. The test tank for simulating underwater pressure as claimed in claim 2, characterized in that: A linkage plate (434) is slidably disposed in the receiving groove (432), the linkage plate (434) being suitable for rotating relative to the rotating shaft (42), and the linkage plate (434) is linked to the limit block (442) via a rope; When the limiting block (442) rotates clockwise in the circular arc groove (431), it is suitable for pulling the linkage plate (434) to move in the direction of the limiting plate (420).

4. The test tank for simulating underwater pressure as claimed in claim 3, characterized in that: A pressure sensor (34) is provided on one side of the limit plate (420) close to the linkage plate (434), and is suitable for monitoring the liquid pressure between the linkage plate (434) and the limit plate (420); The limit plate (420) is provided with a one-way valve which is in electrical signal communication with the pressure sensor (34); When the pressure sensor (34) detects that the liquid pressure has reached a preset value, the one-way valve opens, and the linkage plate (434) is adapted to push the liquid to flow toward the flow channel (430).

5. The test tank for simulating underwater pressure as claimed in claim 1, characterized in that: The inflation system (2) comprises: a gas supply bottle (21) which is connected to the device to be detected in the tank body (1) through a pipeline; A gas circuit stop valve (22), which is arranged on the pipeline to open and close the pipeline; The air pressure sensor (23) is arranged on the pipeline between the air circuit stop valve (22) and the device to be tested, so as to monitor the pressure inside the device to be tested.

6. The test tank for simulating underwater pressure as claimed in claim 1, characterized in that: The pressure regulating system (3) comprises: a water tank (31) which is connected to the tank body (1) via a water supply pipeline; A hydraulic pump (32), which is arranged on the water supply pipeline and is suitable for conveying liquid into the tank body (1); A solenoid valve (33) is arranged on the water return pipeline between the tank body (1) and the water tank (31) to open and close the water return pipeline; The pressure sensor (34) is suitable for detecting the pressure in the tank body (1) and is in electrical signal communication with the water pressure pump (32).

7. A method for testing an underwater pressure test tank, characterized in that: Using the test tank for simulating underwater pressure as claimed in claim 1, the test method comprises: The device to be tested is placed in the tank body (1), and the gas filling system (2) stops supplying compressed gas to the device to be tested after the compressed gas reaches a preset value; The support structure (4) rotates around the hinge point until the airtight door abuts against the tank body (1), and the airtight door is rotated circumferentially to seal the tank body (1); The pressure regulating system (3) circulates liquid into the tank body (1) and discharges it to detect the air tightness of the equipment to be tested.

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