Underwater pressure comprehensive test device for submersible

Abstract

The invention relates to the technical field of external pressure container sealing, and discloses an underwater pressure comprehensive test device for a submersible, the device comprises a test cabin and a cover body fixedly mounted with the test cabin, an upper sealing element and a lower sealing element are sequentially and fixedly mounted in the cover body from top to bottom, and a sealing protection assembly is arranged on the inner side of the cover body. A positioning assembly is arranged in the test chamber, the sealing protection assembly comprises a contact rod which is vertically installed in the cover body in a sliding mode, one end of the contact rod is fixedly connected with an arc-shaped pressing block, and by arranging the sealing protection assembly and utilizing cooperation of an inclined plate, the contact rod and other components, when compressed gas enters, the arc-shaped pressing block can be driven to move; the arc-shaped pressing blocks press the sealing piece tightly, so that sealing of the O-shaped ring and the locking nut is matched, the situation that sealing is not tight is reduced, and good sealing between the upper sealing piece and the cover body and between the lower sealing piece and the cover body is kept. And the sealing of the test chamber and the cover body is also maintained, the sealing leakage is reduced, and the accuracy of the subsequent pressure test is improved.

Description

Technical Field

[0001] This invention relates to the field of external pressure vessel sealing technology, specifically to a submersible underwater pressure comprehensive testing device. Background Technology

[0002] In modern underwater vehicles and related fields, which are devices capable of autonomous remote-controlled navigation, observation, and operation underwater, external pressure testing is commonly involved to verify the safety of the underwater vehicle. Such products typically require sealed equipment during external pressure testing. Therefore, it is necessary to implement external pressure testing sealing devices.

[0003] For example, an underwater pressure integrated testing device with publication number CN104316342A includes a pressurization test chamber, a model structure, a pressurization device, a fiber optic demodulator, and a computer with a data acquisition card. The top of the pressurization test chamber is equipped with a photoelectric connector and sensor mounting assembly, and a water inlet. The bottom of the test chamber is equipped with a water outlet, and a guide rail is installed inside the test chamber. The model structure is equipped with an electrical connector and a fiber optic connector connection assembly, which includes a fiber optic connector and an electrical connector. The bottom of the model cylinder is equipped with rollers. Fiber optic strain sensors and strain gauges are installed on the inner and outer walls of the model cylinder. The fiber optic strain sensors are connected to the fiber optic demodulator via fiber optic connectors, and the strain gauges are connected to the computer with a data acquisition card via electrical connectors. The pressurization device includes a pressure gauge, a control cabinet, a booster pump, and a water tank. The booster pump is connected to the water inlet via a pipe. Underwater pressure testing aims to verify the structural integrity and sealing performance of a submersible under high-pressure deep-sea conditions. In three-dimensional underwater pressure testing of a submersible, the hull and hatch must remain sealed. This is a key requirement to ensure the safety and effectiveness of the test. If the hull or hatch is not sealed, it is impossible to accurately simulate actual operating conditions, and the test becomes meaningless. Furthermore, due to the existing dry leak detection method, it is necessary to fill the test device with compressed gas and maintain the pressure, which makes it easy for leaks to occur at the joints of the hatch, thus affecting the accuracy of the submersible's pressure test. Summary of the Invention

[0004] The purpose of this invention is to provide a comprehensive underwater pressure testing device for submersibles, in order to solve the problem that the existing dry leak detection method requires filling the inside of the testing device with compressed gas and maintaining pressure, which makes the joint of the hatch prone to sealing leaks, thus affecting the accuracy of the submersible pressure test.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a submersible underwater pressure integrated testing device, comprising a test chamber and a cover fixedly installed with the test chamber, wherein a pressure sensor is fixedly installed on one side of the top of the test chamber; Also includes: The upper sealing element and the lower sealing element are fixedly installed inside the cover from top to bottom; A sealing and protective assembly is provided on the inner side of the cover, and a positioning assembly is provided inside the test chamber; The sealing and protective assembly includes a contact rod that is vertically slidably installed inside the cover body. One end of the contact rod is fixedly connected to an arc-shaped pressure block. There are four arc-shaped pressure blocks in total, two of which are located on the upper and lower outer sides of the upper seal, and the remaining two are located on the upper and lower outer sides of the lower seal.

[0006] Preferably, an air filling pipe is fixedly installed inside the upper sealing element, an exhaust pipe is fixedly installed inside the lower sealing element, a fixing plate is fixedly connected to the side of the cover near the test chamber, a connecting pipe is fixedly installed on the upper part of the inside of the fixing plate, an installation box is fixedly connected to the upper part of the inner side wall of the cover, a sliding rod is fixedly connected to the upper part of the side of the installation box near the cover, a spring is sleeved on the outer side of the sliding rod, the spring is located outside the installation box, a sealing ring is laterally slidably installed inside the test chamber, and an outer ring body is fixedly connected to the side of the sealing ring away from the cover.

[0007] By adopting the above technical solution, when compressed gas enters, it can simultaneously drive the arc-shaped pressure block to move, so that multiple arc-shaped pressure blocks press the sealing element, thereby cooperating with the O-ring and locking nut to seal, reducing the possibility of poor sealing, and maintaining a good seal between the upper and lower sealing elements and the cover.

[0008] Preferably, one end of the slide rod is fixedly connected to an inclined plate, the inclined plate is in contact with the inner wall of the mounting box, the inclined plate is slidably connected to the mounting box, a sealing rod is fixedly connected to the side of the inclined plate away from the slide rod, the sealing rod is engaged with the connecting pipe, and a second spring is fixedly connected to the lower part of the side of the inclined plate near the cover, the second spring is fixedly connected to the inner wall of the mounting box.

[0009] By adopting the above technical solution, compressed gas enters the installation box through the gas filling pipe. The gas pushes the inclined plate to move, and the inclined plate will compress the second spring. The second spring is used to assist the sliding and resetting of the inclined plate.

[0010] Preferably, the lower part of the mounting box near the test chamber is threaded with an adjusting screw, which abuts against the inclined plate. The upper part of the inclined plate near the cover is also fixedly connected with a push rod. The side of the cover near the test chamber has four transverse sliding grooves from top to bottom, and the push rod is slidably connected to the sliding grooves.

[0011] By adopting the above technical solution, the inclined plate will drive the slide bar and push bar to move, and the slide bar will stretch the spring.

[0012] Preferably, the cover has four vertical grooves inside, each groove is vertically connected to a single sliding groove, the contact rod is slidably connected to the groove, the end of the contact rod near the sliding groove is provided with an inclined surface, a spring three is sleeved on the outside of the contact rod, one end of the spring three is fixedly connected to the inner wall of the groove, the other end of the spring three is fixedly connected to the arc-shaped pressure block, and an annular piece is fixedly connected to the outside of the push rod.

[0013] By adopting the above technical solution, both the push rod and the auxiliary rod will press the inclined surface of the corresponding contact rod. The contact rod drives the arc-shaped pressure block to move, and the arc-shaped pressure block stretches the spring three, so that multiple arc-shaped pressure blocks press the upper and lower seals tightly.

[0014] Preferably, another push rod is fixedly connected to the bottom of the annular component, an inner plate is fixedly connected to the middle of the inner side of the annular component, two auxiliary rods are fixedly connected to the side of the inner plate near the cover, the two auxiliary rods are slidably connected to the two middle sliding grooves respectively, a connecting rod is fixedly connected to the upper part of the inclined plate near the test chamber, the connecting rod is slidably connected to the fixed plate, and the connecting rod is fixedly connected to the sealing ring.

[0015] By adopting the above technical solution, the inclined plate will also drive the connecting rod to move, and the connecting rod will drive the sealing ring and the outer ring body to move, so that the sealing ring is pressed against the connection of the cover, maintaining the seal between the test chamber and the cover.

[0016] Preferably, the positioning assembly includes a fixed plate fixedly connected inside the test chamber, two double-ended lead screws rotatably connected at the upper part between the fixed plate and the fixed plate, two lower rods fixedly connected at the lower part between the fixed plate and the fixed plate, and two fixed frames threaded to the outer side of the double-ended lead screws.

[0017] By adopting the above technical solution, by rotating the two double-ended lead screws, the lower screw limits the fixed frame, and the rotation of the double-ended lead screws will drive the two fixed frames to move, and the two fixed frames will move closer to each other, so that the two fixed frames can limit and fix the submersible.

[0018] Preferably, the fixed frame is slidably connected to the lower rod, and the two fixed frames move in opposite directions. A lower plate is fixedly connected to the bottom of one of the fixed frames, and a lower screw is vertically threaded inside the lower plate. A support plate is rotatably connected to the top of the lower screw. A clearance groove is provided at the bottom of the other fixed frame.

[0019] By adopting the above technical solution, the lower screw is rotated, which drives the support plate to rotate and rise, so that the support plate supports and fixes the bottom of the submersible, thereby achieving the limitation of the submersible.

[0020] Preferably, O-rings are fitted onto the outer sides of both the upper and lower seals, and locking nuts are threaded onto the outer sides of both the upper and lower seals, with the locking nuts abutting against the inner wall of the cover.

[0021] By adopting the above technical solution, a double reliable seal is achieved, ensuring the stability of the seal. The operation is simple, the pressure bearing capacity is high, and if one seal fails, the other can still seal, thus greatly reducing the leakage rate.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows: By setting up a sealing and protective assembly, and utilizing the cooperation of components such as inclined plates, push rods, and contact rods, the arc-shaped pressure blocks can be driven to move simultaneously when compressed gas enters, so that multiple arc-shaped pressure blocks press against the sealing element, thereby cooperating with the O-ring and locking nut to reduce the possibility of incomplete sealing, maintaining a good seal between the upper and lower sealing elements and the cover, and at the same time assisting in driving the sealing ring to press against the connection of the cover, maintaining the seal between the test chamber and the cover, reducing sealing leakage, improving the accuracy of subsequent pressure tests, and the sealing stability adjusts autonomously with the test pressure; the higher the test pressure, the more stable the seal. Specific details are as follows: 1. By setting up a sealing and protective assembly, after the operator fixes the test chamber and the cover with fixing bolts, the gas filling pipe is connected to an external high-precision air pressure generator. Exhaust is then carried out through the exhaust pipe, and compressed gas enters the installation box through the gas filling pipe. The gas pushes the inclined plate to move, which compresses spring two and drives the sliding rod and push rod to move. The sliding rod stretches spring one, and the push rod, through the annular part and inner plate, drives the auxiliary rod to move. Both the push rod and the auxiliary rod press against the inclined surface of the corresponding contact rod. The contact rod drives the arc-shaped pressure block to move, and the arc-shaped pressure block stretches spring three, causing multiple arc-shaped pressure blocks to press tightly against the upper and lower seals. Combined with the sealing of the O-ring and lock nut, this reduces the possibility of incomplete sealing. Maintaining a good seal between the upper and lower seals and the cover, the inclined plate also moves the connecting rod, which in turn moves the sealing ring and outer ring, ensuring that the sealing ring is tightly pressed against the connection point of the cover. This maintains the seal between the test chamber and the cover, reduces leakage, and improves the accuracy of subsequent pressure tests. The sealing stability adjusts autonomously with the test pressure; the higher the test pressure, the more stable the seal. Simultaneously, the inclined plate also moves the sealing rod. When the sealing rod disengages from the connecting pipe, the compressed gas enters the test chamber through the connecting pipe, inflating and pressurizing the submersible inside the test chamber. The pressure sensor displays the pressure value inside the test chamber, allowing for sealing performance testing. 2. By setting up a positioning component, the operator places the submersible to be tested between two fixed frames. By rotating two double-ended lead screws, the lower screw limits the fixed frames. The rotation of the double-ended lead screws causes the two fixed frames to move closer together, thus facilitating the fixation and positioning of the submersible. The movement of one fixed frame causes the lower plate to move, which in turn moves the support plate, placing the support plate below the submersible. Then, by rotating the lower screw, the support plate rotates and rises, supporting and fixing the bottom of the submersible. This achieves the limitation of the submersible and reduces the instability of the submersible's position inside the test chamber during subsequent injection of compressed gas, reducing the impact on the pressure test results. By setting up O-rings and lock nuts, a double reliable seal is achieved, ensuring the stability of the seal. The operation is simple, the pressure bearing capacity is high, and even if one seal fails, the other can still seal, significantly reducing the leakage rate. The double seals share the load, reducing single-seal wear, and are more resistant to aging and fatigue, as well as high pressure, high temperature, and vibration. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a schematic cross-sectional view of the test chamber of the present invention; Figure 3 This is a schematic diagram of the fixing plate structure of the present invention; Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A in the middle; Figure 5 For the present invention Figure 3 Enlarged structural diagram at point B; Figure 6 This is a schematic diagram of the O-ring structure of the present invention; Figure 7 For the present invention Figure 6 Enlarged structural diagram at point C; Figure 8 This is a schematic diagram of the sealing ring structure of the present invention; Figure 9 For the present invention Figure 8 Enlarged structural diagram at point D; Figure 10 This is a schematic diagram of the double-ended lead screw structure of the present invention; Figure 11 This is a schematic diagram of the fixed disk structure of the present invention; Figure 12 For the present invention Figure 11 Enlarged structural diagram at point E; Figure 13This is a schematic diagram of the lower plate structure of the present invention. In the diagram: 1. Test chamber; 2. Cover; 3. Pressure sensor; 4. Upper seal; 5. Lower seal; 6. Gas filling pipe; 7. Exhaust pipe; 8. Sealing and protection assembly; 81. Fixing plate; 82. Mounting box; 83. Slide rod; 84. Spring one; 85. Inclined plate; 86. Sealing rod; 87. Spring two; 88. Adjusting screw; 89. Push rod; 810. Slide groove; 811. Vertical groove; 812. Contact rod; 813. 814. Arc-shaped pressure block; 815. Spring 3; 816. Ring part; 817. Inner plate; 818. Auxiliary rod; 819. Connecting rod; 820. Sealing ring; 821. Outer ring body; 922. Positioning assembly; 93. Fixing plate; 94. Double-ended lead screw; 95. Lower rod; 96. Fixing frame; 97. Lower plate; 98. Lower screw; 99. Support plate; 90. Relief groove; 10. Connecting pipe; 11. O-ring; 12. Locking nut. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Please see Figure 1 - Figure 3 The present invention provides a technical solution: a submersible underwater pressure comprehensive test device, including a test chamber 1 and a cover 2 fixedly installed with the test chamber 1. A pressure sensor 3 is fixedly installed on one side of the top of the test chamber 1. The pressure sensor 3 is of model CUY-YZ-317C2.

[0026] The upper sealing element 4 and the lower sealing element 5 are fixedly installed inside the cover body 2 from top to bottom. Through the cooperation of the upper sealing element 4, the lower sealing element 5 and the O-ring 11, a double reliable seal is achieved to ensure the stability of the seal.

[0027] like Figure 2 and Figure 4 - Figure 9 As shown, a sealing and protective assembly 8 is provided on the inner side of the cover 2. The sealing and protective assembly 8 includes a contact rod 812 that is vertically slidably installed inside the cover 2. One end of the contact rod 812 is fixedly connected to an arc-shaped pressure block 813. There are four arc-shaped pressure blocks 813 in total. Two of the arc-shaped pressure blocks 813 are located on the upper and lower outer sides of the upper seal 4, and the remaining two arc-shaped pressure blocks 813 are located on the upper and lower outer sides of the lower seal 5. The upper and lower arc-shaped pressure blocks 813 are fitted together to form a complete ring, which is used to assist in sealing the installation gap between the upper seal 4 and the lower seal 5.

[0028] An air filling pipe 6 is fixedly installed inside the upper seal 4, and an exhaust pipe 7 is fixedly installed inside the lower seal 5. A fixing plate 81 is fixedly connected to the side of the cover 2 near the test chamber 1. A connecting pipe 10 is fixedly installed on the upper part of the inside of the fixing plate 81. One-way valves are installed on the outside of the exhaust pipe 7 and the connecting pipe 10 to maintain one-way flow of compressed gas.

[0029] An installation box 82 is fixedly connected to the upper inner wall of the cover 2. A sliding rod 83 is fixedly connected to the upper part of the installation box 82 near the cover 2. A spring 84 is sleeved on the outer side of the sliding rod 83. The spring 84 is located outside the installation box 82. A sealing ring 819 is slidably installed laterally inside the test chamber 1. An outer ring body 820 is fixedly connected to the side of the sealing ring 819 away from the cover 2. The sealing ring 819 and the outer ring body 820 are used to seal the connection gap between the test chamber 1 and the cover 2, reducing sealing leakage.

[0030] One end of the slide bar 83 is fixedly connected to an inclined plate 85. The inclined plate 85 fits against the inner wall of the mounting box 82 and is slidably connected to the mounting box 82. A sealing rod 86 is fixedly connected to the side of the inclined plate 85 away from the slide bar 83. The sealing rod 86 is engaged with the connecting pipe 10. A second spring 87 is fixedly connected to the lower part of the side of the inclined plate 85 near the cover 2. The second spring 87 is fixedly connected to the inner wall of the mounting box 82 and is used to assist the sliding and resetting of the inclined plate 85.

[0031] An adjusting screw 88 is threadedly connected to the lower part of the mounting box 82 near the test chamber 1. The adjusting screw 88 abuts against the inclined plate 85. A push rod 89 is also fixedly connected to the upper part of the inclined plate 85 near the cover 2. Four transverse sliding grooves 810 are opened from top to bottom on the side of the cover 2 near the test chamber 1. The push rod 89 is slidably connected to the sliding grooves 810.

[0032] The cover 2 has four vertical grooves 811 inside, each vertical groove 811 is vertically connected to a single sliding groove 810. The contact rod 812 is slidably connected to the vertical groove 811. The end of the contact rod 812 near the sliding groove 810 is provided with an inclined surface. A spring 814 is sleeved on the outside of the contact rod 812. One end of the spring 814 is fixedly connected to the inner wall of the vertical groove 811, and the other end of the spring 814 is fixedly connected to the arc-shaped pressure block 813. A ring 815 is fixedly connected to the outside of the push rod 89, so that the push rod 89, the ring 815, the inner plate 816 and the auxiliary rod 817 move synchronously.

[0033] Among them, spring 1 84, spring 2 87 and spring 3 814 are all piano wire springs, and damping blocks are set at both ends to ensure stable elongation and retraction.

[0034] Another push rod 89 is fixedly connected to the bottom of the annular part 815. An inner plate 816 is fixedly connected to the middle of the inner side of the annular part 815. Two auxiliary rods 817 are fixedly connected to the side of the inner plate 816 near the cover 2. The two auxiliary rods 817 are slidably connected to the two middle sliding grooves 810 respectively. A connecting rod 818 is fixedly connected to the upper part of the inclined plate 85 near the test chamber 1. The connecting rod 818 is slidably connected to the fixed plate 81. The connecting rod 818 is fixedly connected to the sealing ring 819.

[0035] O-rings 11 are fitted onto the outer sides of both the upper seal 4 and the lower seal 5. Locking nuts 12 are threaded onto the outer sides of both the upper seal 4 and the lower seal 5. The locking nuts 12 abut against the inner wall of the cover 2.

[0036] Example 1: As Figure 4 - Figure 9 As shown, after the operator fixes the test chamber 1 and the cover 2 with fixing bolts, the gas filling pipe 6 is connected to the external high-precision air pressure generator, and the exhaust pipe 7 exhausts the gas. The compressed gas enters the installation box 82 through the gas filling pipe 6. The gas pushes the inclined plate 85 to move. The inclined plate 85 will compress the second spring 87 and drive the slide rod 83 and push rod 89 to move. The slide rod 83 stretches the first spring 84. The push rod 89, through the ring part 815 and the inner plate 816, will drive the auxiliary rod 817 to move. Both the push rod 89 and the auxiliary rod 817 will squeeze the inclined surface of the corresponding contact rod 812.

[0037] The contact rod 812 drives the arc-shaped pressure block 813 to move. The arc-shaped pressure block 813 stretches the spring 814, causing multiple arc-shaped pressure blocks 813 to press the upper seal 4 and the lower seal 5 together. This, in conjunction with the O-ring 11 and the locking nut 12, reduces the possibility of incomplete sealing and maintains a good seal between the upper seal 4 and the lower seal 5 and the cover 2. Furthermore, the inclined plate 85 also drives the connecting rod 818 to move. The connecting rod 818 drives the sealing ring 819 and the outer ring body 820 to move, causing the sealing ring 819 to press tightly against the connection of the cover 2, maintaining the seal between the test chamber 1 and the cover 2, reducing sealing leakage, and improving the accuracy of subsequent pressure tests.

[0038] Furthermore, the sealing stability is autonomously adjusted with the test pressure. The higher the test pressure, the more stable the seal. At the same time, the inclined plate 85 will also drive the sealing rod 86 to move. When the sealing rod 86 is dislodged from the connecting pipe 10, the compressed gas input at this time enters the test chamber 1 through the connecting pipe 10, and then inflates and maintains the pressure of the submersible inside the test chamber 1. The pressure sensor 3 displays the pressure value inside the test chamber 1, and the sealing performance can be tested.

[0039] By setting O-ring 11 and locking nut 12, a double reliable seal is achieved, ensuring the stability of the seal. The operation is simple, the bearing pressure is high, and if one seal fails, the other can still seal, greatly reducing the leakage rate. The double seals share the load, reducing single-seal wear, and are more resistant to aging and fatigue. They are also more resistant to high pressure, high temperature, and vibration.

[0040] like Figure 2 and Figure 10 - Figure 13 As shown, the interior of the test chamber 1 is equipped with a positioning component 9. The positioning component 9 includes a fixed plate 91 fixedly connected inside the test chamber 1. The upper part of the fixed plate 91 and the fixed plate 81 are rotatably connected to two double-ended screw rods 92. The lower part of the fixed plate 91 and the fixed plate 81 are fixedly connected to two lower rods 93. The outer side of the double-ended screw rods 92 is threadedly connected to two fixed frames 94.

[0041] The fixed frame 94 is slidably connected to the lower rod 93, and the two fixed frames 94 move in opposite directions. The bottom of one fixed frame 94 is fixedly connected to a lower plate 95, and the lower plate 95 is vertically threaded to a lower screw 96. The top of the lower screw 96 is rotatably connected to a support plate 97. The bottom of the other fixed frame 94 is provided with a clearance groove 98.

[0042] Example 2: Figure 10 - Figure 13 As shown, the operator places the submersible to be tested between two fixed frames 94. By rotating the two double-ended lead screws 92, the lower rod 93 limits the fixed frames 94. The rotation of the double-ended lead screws 92 will drive the two fixed frames 94 to move closer to each other, thus facilitating the two fixed frames 94 to limit and fix the submersible. The movement of one fixed frame 94 will drive the lower plate 95 to move, and the lower plate 95 will drive the support plate 97 to move, so that the support plate 97 is located below the submersible. Then, by rotating the lower screw 96, the lower screw 96 will drive the support plate 97 to rotate and rise, so that the support plate 97 supports and fixes the bottom of the submersible, thereby achieving the limitation of the submersible and reducing the instability of the submersible's position inside the test chamber when compressed gas is injected later, thus reducing the impact on the pressure test results.

[0043] Working principle: When using this device, firstly, as... Figure 1 - Figure 13As shown, the operator places the submersible to be tested between two fixed frames 94. By rotating the two double-ended screws 92, the two fixed frames 94 limit and fix the submersible. The support plate 97 supports and fixes the bottom of the submersible. After fixing the test chamber 1 and the cover 2 with fixing bolts, the air supply pipe 6 is connected to the external high-precision air pressure generator, and the exhaust pipe 7 exhausts the gas. The compressed gas enters the mounting box 82 through the air supply pipe 6. The gas pushes the inclined plate 85 to move, and the inclined plate 85 will compress the second spring 87. The push rod 89 and the auxiliary rod 817 will squeeze the inclined surface of the corresponding contact rod 812. The contact rod 812 drives the arc-shaped pressure block 813 to move. The arc-shaped pressure block 813 stretches the third spring 814, so that multiple arc-shaped pressure blocks 813 press the upper seal tightly. The inclined plate 85 also moves the connecting rod 818, which in turn moves the sealing ring 819 and the outer ring 820, causing the sealing ring 819 to press tightly against the connection of the cover 2, thus maintaining the seal between the test chamber 1 and the cover 2, reducing leakage, improving the accuracy of subsequent pressure tests, and ensuring that the sealing stability adjusts autonomously with the test pressure. The higher the test pressure, the more stable the seal. At the same time, the inclined plate 85 also moves the sealing rod 86. When the sealing rod 86 is dislodged from the connecting pipe 10, the compressed gas input at this time enters the test chamber 1 through the connecting pipe 10, inflates and pressurizes the submersible inside the test chamber 1, and the pressure sensor 3 displays the pressure value inside the test chamber 1, which allows for sealing performance testing.

[0044] Contents not described in detail in this specification are existing technologies known to those skilled in the art. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A submersible underwater pressure integrated testing device, comprising a test chamber (1) and a cover (2) fixedly installed with the test chamber (1), wherein a pressure sensor (3) is fixedly installed on one side of the top of the test chamber (1). Its features are, Also includes: The cover (2) is fixedly installed with an upper sealing element (4) and a lower sealing element (5) from top to bottom inside. The inner side of the cover (2) is provided with a sealing and protective component (8), and the interior of the test chamber (1) is provided with a positioning component (9). The sealing and protective assembly (8) includes a contact rod (812) that is vertically slidably installed inside the cover (2). One end of the contact rod (812) is fixedly connected to an arc-shaped pressure block (813). There are four arc-shaped pressure blocks (813) in total. Two of the arc-shaped pressure blocks (813) are located on the upper and lower parts of the outer side of the upper seal (4), and the remaining two arc-shaped pressure blocks (813) are located on the upper and lower parts of the outer side of the lower seal (5).

2. The underwater pressure comprehensive testing device for a submersible according to claim 1, characterized in that: An air supply pipe (6) is fixedly installed inside the upper sealing element (4), an exhaust pipe (7) is fixedly installed inside the lower sealing element (5), a fixing plate (81) is fixedly connected to the side of the cover (2) near the test chamber (1), a connecting pipe (10) is fixedly installed on the upper part of the inside of the fixing plate (81), an installation box (82) is fixedly connected to the upper part of the inner side wall of the cover (2), a sliding rod (83) is fixedly connected to the upper part of the side of the installation box (82) near the cover (2), a spring (84) is sleeved on the outer side of the sliding rod (83), the spring (84) is located outside the installation box (82), a sealing ring (819) is slidably installed inside the test chamber (1), and an outer ring body (820) is fixedly connected to the side of the sealing ring (819) away from the cover (2).

3. The underwater pressure comprehensive testing device for a submersible according to claim 2, characterized in that: One end of the slide bar (83) is fixedly connected to an inclined plate (85), the inclined plate (85) is in contact with the inner wall of the mounting box (82), the inclined plate (85) is slidably connected to the mounting box (82), a sealing rod (86) is fixedly connected to the side of the inclined plate (85) away from the slide bar (83), the sealing rod (86) is engaged with the connecting pipe (10), and a second spring (87) is fixedly connected to the lower part of the side of the inclined plate (85) near the cover (2), the second spring (87) is fixedly connected to the inner wall of the mounting box (82).

4. The underwater pressure comprehensive testing device for a submersible according to claim 3, characterized in that: The mounting box (82) is threaded with an adjusting screw (88) on the lower part of the side near the test chamber (1). The adjusting screw (88) abuts against the inclined plate (85). The inclined plate (85) is also fixedly connected with a push rod (89) on the upper part of the side near the cover (2). The cover (2) is provided with four transverse sliding grooves (810) from top to bottom on the side near the test chamber (1). The push rod (89) is slidably connected to the sliding grooves (810).

5. The underwater pressure comprehensive testing device for a submersible according to claim 4, characterized in that: The cover (2) has four vertical grooves (811) inside, each of which is vertically connected to a single sliding groove (810). The contact rod (812) is slidably connected to the vertical groove (811). The end of the contact rod (812) near the sliding groove (810) is provided with an inclined surface. A spring three (814) is sleeved on the outside of the contact rod (812). One end of the spring three (814) is fixedly connected to the inner wall of the vertical groove (811), and the other end of the spring three (814) is fixedly connected to the arc-shaped pressure block (813). A ring part (815) is fixedly connected to the outside of the push rod (89).

6. The underwater pressure comprehensive testing device for a submersible according to claim 5, characterized in that: Another push rod (89) is fixedly connected to the bottom of the annular part (815). An inner plate (816) is fixedly connected to the middle of the inner side of the annular part (815). Two auxiliary rods (817) are fixedly connected to the side of the inner plate (816) near the cover (2). The two auxiliary rods (817) are slidably connected to the two middle sliding grooves (810) respectively. A connecting rod (818) is fixedly connected to the upper part of the side of the inclined plate (85) near the test chamber (1). The connecting rod (818) is slidably connected to the fixed plate (81). The connecting rod (818) is fixedly connected to the sealing ring (819).

7. The underwater pressure comprehensive testing device for a submersible according to claim 2, characterized in that: The positioning component (9) includes a fixed plate (91) fixedly connected inside the test chamber (1). The upper part of the fixed plate (91) and the fixed plate (81) are rotatably connected to two double-ended screw rods (92). The lower part of the fixed plate (91) and the fixed plate (81) are fixedly connected to two lower rods (93). The outer side of the double-ended screw rods (92) is threaded with two fixed frames (94).

8. The underwater pressure comprehensive testing device for a submersible according to claim 7, characterized in that: The fixed frame (94) is slidably connected to the lower rod (93), and the two fixed frames (94) move in opposite directions. A lower plate (95) is fixedly connected to the bottom of one of the fixed frames (94), and a lower screw (96) is vertically threaded inside the lower plate (95). A support plate (97) is rotatably connected to the top of the lower screw (96). A clearance groove (98) is provided at the bottom of the other fixed frame (94).

9. The underwater pressure comprehensive testing device for a submersible according to claim 1, characterized in that: O-rings (11) are fitted on the outer sides of the upper seal (4) and the lower seal (5), and locking nuts (12) are threaded onto the outer sides of the upper seal (4) and the lower seal (5), and the locking nuts (12) abut against the inner wall of the cover (2).

Images