Passive delay hatch unlocking mechanism suitable for underwater environment

Abstract

A passive delay hatch unlocking mechanism suitable for an underwater environment comprises a hatch cover, a dry cabin shell, a wet cabin shell, a hatch cover fixing ring, a hatch cover sealing ring, a hatch cover sealing pressing plate, a water-soluble fixing belt, a radial sealing ring, an axial sealing ring, a hatch cover fixing ring bolt and a hatch cover sealing ring bolt. The invention has the following characteristics: (1) based on the characteristic that the water-soluble fixing band is dissolved in water, the passive delayed unlocking of the hatch in the underwater environment can be realized; and (2) rigid connection between the hatch cover and the shell can be realized through a sandwich structure formed by the hatch cover, the hatch cover fixing ring, the water-soluble fixing belt and the hatch cover fixing ring bolt.

Description

Technical Field

[0001] The invention belongs to the field of positioning and recovery, and in particular relates to an underwater equipment hatch unlocking mechanism. Background Art

[0002] Release Mechanism, also known as Release Mechanism in English, refers to a component that can make the joint elements separate. It is the executive component for the firm connection and reliable separation between equipment compartments, between the body and components, and between mechanisms. Its reliable operation is the basis and prerequisite for the successful completion of various test tasks. At present, the traditional underwater equipment hatch separation device requires a special trigger mechanism and control circuit, etc., with poor environmental adaptability and complex structure.

[0003] For example, Chinese patent CN114526648A is a tail cover separation mechanism suitable for high-speed water entry, which uses explosive bolts between a limit ring and a limit slot to separate the tail cover from the navigation body. However, the separation mechanism has the disadvantages of poor environmental adaptability, the need for a dedicated control circuit, and high risk factors for the transportation and installation of explosives.

[0004] The Chinese patent CN104943865B is called the fully mechanical automatic separation mechanism of the parachute of a miniature throwing robot, which uses a head seat, a return spring, a guide column and other structures to separate the robot from the parachute. However, the separation mechanism has the disadvantages of being used in special landing scenarios and being large in size. Summary of the invention

[0005] The technical problem solved by the present invention is: providing a passive time-delay hatch unlocking mechanism suitable for underwater environment, solving the problem that the hatch separation device of traditional underwater equipment needs a special triggering mechanism.

[0006] The technical solution of the present invention is:

[0007] A passive time-delay hatch unlocking mechanism suitable for underwater environment, comprising: a hatch cover, a dry cabin shell, a wet cabin shell, a hatch cover fixing ring, a hatch cover sealing ring, a hatch cover sealing pressure plate, a water-soluble fixing belt, a hatch cover water inlet hole, an axial sealing ring, a radial sealing ring, a hatch cover fixing ring bolt, and a hatch cover sealing ring bolt;

[0008] The hatch cover is fixed to the hatch cover fixing ring by a water-soluble fixing belt, the hatch cover fixing ring is fixed to the hatch cover sealing ring by a hatch cover fixing ring bolt, and the hatch cover sealing ring is fixed to the wet tank shell by a hatch cover sealing ring bolt;

[0009] Through the hatch cover sealing ring, hatch cover sealing pressure plate, axial sealing ring and radial sealing ring, a dry environment inside the dry tank shell under underwater environmental conditions is achieved;

[0010] Water flows into the wet tank shell through the hatch cover water inlet hole arranged on the hatch cover. In the process of water flowing into the wet tank shell, the water-soluble fixing belt dissolves when it comes into contact with water to unlock the hatch.

[0011] Furthermore, the water-soluble fixing tape is made of water-soluble vinylon yarn and hydrosol.

[0012] Furthermore, the fixing time and fixing degree of the hatch cover in the underwater environment can be changed by adjusting the number of strands of the water-soluble vinylon yarn and the dosage of the hydrosol.

[0013] Furthermore, an axial sealing ring is arranged between the wet tank shell and the hatch cover sealing ring, and the wet tank shell and the hatch cover sealing ring are rigidly connected by hatch cover sealing ring bolts, thereby ensuring that water flow does not enter the dry tank shell from the axial sealing ring.

[0014] Furthermore, a radial sealing ring is arranged between the dry tank shell, the hatch cover sealing ring and the hatch cover sealing pressure plate, and the dry tank shell and the hatch cover sealing pressure plate are rigidly connected by the hatch cover sealing pressure plate bolts, thereby ensuring that water flow will not enter the dry tank shell from the radial sealing ring.

[0015] Furthermore, water flows in through the gap between the hatch cover and the dry tank shell, and enters the wet tank shell through the hatch cover water inlet hole set on the hatch cover. In the process of water flowing into the wet tank shell, it passes through the water-soluble fixing belt, and the soluble fixing belt dissolves when it comes into contact with water to unlock the hatch.

[0016] Furthermore, the hatch cover, the hatch cover fixing ring, the hatch cover sealing ring, the water-soluble fixing belt, and the hatch cover fixing ring bolts together form a "sandwich" structure.

[0017] Furthermore, the "sandwich" structure achieves a rigid connection between the hatch cover and the hatch cover fixing ring, and through the characteristic of the water-soluble fixing belt dissolving in water, passive delayed unlocking and separation of the hatch in an underwater environment is achieved.

[0018] The beneficial effects of the present invention compared with the prior art are:

[0019] (1) The "sandwich" structure formed by the hatch cover, the hatch cover fixing ring, the hatch cover sealing ring water-soluble fixing belt, and the hatch cover fixing ring bolts proposed in the present invention can achieve a rigid connection between the hatch cover and the shell.

[0020] (2) Based on the characteristic that the water-soluble fixing tape dissolves in water, the present invention can realize passive delayed unlocking of the hatch in an underwater environment.

[0021] (3) The present invention can change the separation time and impact resistance of the underwater environment hatch cover by adjusting the number of water-soluble vinylon yarns and the amount of hydrosol.

[0022] (4) The present invention can achieve a dry environment inside the dry cabin shell under underwater environmental conditions by providing a hatch cover sealing ring, a hatch cover sealing pressure plate, a radial sealing ring and an axial sealing ring, thereby achieving the dry environment use requirements of the equipment.

[0023] (5) The present invention can achieve water flow into the wet tank shell by setting a gap between the hatch cover and the dry tank shell and opening the hatch cover, thereby achieving the working requirements of the underwater environment in the cabin. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the passive time-delay hatch automatic separation mechanism applicable to underwater environment of the present invention;

[0025] Figure 2 This is a schematic diagram of the passive delay hatch "sandwich" mechanism;

[0026] Figure 3 It is a schematic diagram of the sealing and water inlet path of the passive delayed hatch automatic separation mechanism;

[0027] Figure 4 This is a schematic diagram of the hatch cover separation of the passive delayed hatch automatic separation mechanism. DETAILED DESCRIPTION

[0028] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings.

[0029] like Figure 1 , 2 As shown, the present invention proposes a passive delayed hatch unlocking mechanism suitable for underwater environment, which is characterized by comprising: a hatch cover 1, a dry cabin shell 2, a wet cabin shell 3, a hatch cover fixing ring 4, a hatch cover sealing ring 5, a hatch cover sealing pressure plate 6, a water-soluble fixing belt 7, a hatch cover water inlet hole 8, an axial sealing ring 9, a radial sealing ring 10, a hatch cover fixing ring bolt 11, and a hatch cover sealing ring bolt 12.

[0030] The present invention has the following characteristics:

[0031] (1) Based on the characteristic that the water-soluble fixing belt dissolves in water, the present invention can realize passive delayed unlocking of the hatch in an underwater environment.

[0032] (2) The "sandwich" structure formed by the hatch cover, hatch cover fixing ring, water-soluble fixing belt, and hatch cover fixing ring bolts proposed in the present invention can achieve a rigid connection between the hatch cover and the shell.

[0033] Specifically, the hatch cover 1 is fixed to the hatch cover fixing ring 4 by a water-soluble fixing belt 7, and the fixing time and fixing degree of the hatch cover 1 in the underwater environment are changed by adjusting the number of strands of the water-soluble vinylon yarn and the amount of hydrosol. The hatch cover fixing ring 4 is fixed to the hatch cover sealing ring 5 by a hatch cover fixing ring bolt 11, and the hatch cover sealing ring 5 is fixed to the wet cabin shell 3 by a hatch cover sealing ring bolt 12;

[0034] Through the hatch cover sealing ring 5, the hatch cover sealing pressure plate 6, the axial sealing ring 9 and the radial sealing ring 10, a dry environment inside the dry cabin shell 2 is achieved under underwater environmental conditions;

[0035] The water flows into the wet tank shell 3 through the hatch cover water inlet hole 8 provided on the hatch cover 1. In the process of the water flowing into the wet tank shell 3, the water-soluble fixing belt 7 dissolves when it encounters water to unlock the hatch.

[0036] Preferably, the water-soluble fixing tape 7 is made of water-soluble vinylon yarn and hydrosol.

[0037] like Figure 3 As shown, the axial sealing ring 9 is arranged between the wet tank shell 3 and the hatch cover sealing ring 5, and the wet tank shell 3 and the hatch cover sealing ring 5 are rigidly connected by the hatch cover sealing ring bolts 12, thereby ensuring that water flow will not enter the dry tank shell 2 from the axial sealing ring 9.

[0038] The radial sealing ring 10 is arranged between the dry tank shell 2, the hatch cover sealing ring 5 and the hatch cover sealing pressure plate 6, and the dry tank shell 2 and the hatch cover sealing pressure plate 6 are rigidly connected by the hatch cover sealing pressure plate bolts 13, thereby ensuring that water flow will not enter the dry tank shell 2 from the radial sealing ring 10.

[0039] Water flows in through the gap between the hatch cover 1 and the dry tank shell 2, and enters the wet tank shell 3 through the hatch cover water inlet hole 8 set on the hatch cover 1. In the process of water flowing into the wet tank shell 3, it passes through the water-soluble fixing belt 7, and the soluble fixing belt 7 dissolves when it comes into contact with water to unlock the hatch.

[0040] The hatch cover 1, the hatch cover fixing ring 4, the hatch cover sealing ring 5, the water-soluble fixing belt 7, and the hatch cover fixing ring bolts 11 together form a "sandwich" structure. The "sandwich" structure realizes the rigid connection between the hatch cover 1 and the hatch cover fixing ring 4, and realizes the passive delayed unlocking and separation of the hatch in the underwater environment through the characteristic of the water-soluble fixing belt 7 being soluble in water. Figure 4 shown.

[0041] Parts of the present invention that are not described in detail belong to common knowledge among those skilled in the art.

Claims

1. A passive time-delay hatch unlocking mechanism suitable for underwater environment, characterized in that include: Hatch cover (1), dry tank shell (2), wet tank shell (3), hatch cover fixing ring (4), hatch cover sealing ring (5), hatch cover sealing pressure plate (6), water-soluble fixing belt (7), hatch cover water inlet hole (8), axial sealing ring (9), radial sealing ring (10), hatch cover fixing ring bolts (11), hatch cover sealing ring bolts (12); The hatch cover (1) is fixed to the hatch cover fixing ring (4) via a water-soluble fixing belt (7), the hatch cover fixing ring (4) is fixed to the hatch cover sealing ring (5) via hatch cover fixing ring bolts (11), and the hatch cover sealing ring (5) is fixed to the wet cabin shell (3) via hatch cover sealing ring bolts (12); A dry environment inside the dry cabin shell (2) is achieved under underwater environmental conditions by means of a hatch cover sealing ring (5), a hatch cover sealing pressure plate (6), an axial sealing ring (9) and a radial sealing ring (10); Water flows into the wet cabin shell (3) through the hatch cover water inlet hole (8) provided on the hatch cover (1). In the process of water flowing into the wet cabin shell (3), the water-soluble fixing belt (7) dissolves when it encounters water, thereby unlocking the hatch.

2. A passive time-delay hatch unlocking mechanism suitable for underwater environment according to claim 1, characterized in that: The water-soluble fixing belt (7) is made of water-soluble vinylon yarn and hydrosol.

3. A passive time-delay hatch unlocking mechanism suitable for underwater environment according to claim 2, characterized in that: By adjusting the number of strands of the water-soluble vinylon yarn and the amount of the hydrosol, the fixing time and the fixing degree of the hatch cover (1) in the underwater environment can be changed.

4. The passive time-delay hatch unlocking mechanism suitable for underwater environment according to claim 1, characterized in that: The axial sealing ring (9) is arranged between the wet tank shell (3) and the hatch cover sealing ring (5), and the wet tank shell (3) and the hatch cover sealing ring (5) are rigidly connected via the hatch cover sealing ring bolts (12), thereby ensuring that water flow does not enter the dry tank shell (2) from the axial sealing ring (9).

5. The passive time-delay hatch unlocking mechanism suitable for underwater environment according to claim 1, characterized in that: The radial sealing ring (10) is arranged between the dry tank shell (2), the hatch cover sealing ring (5) and the hatch cover sealing pressure plate (6), and the dry tank shell (2) and the hatch cover sealing pressure plate (6) are rigidly connected via the hatch cover sealing pressure plate bolts (13), thereby ensuring that water flow does not enter the dry tank shell (2) from the radial sealing ring (10).

6. A passive time-delay hatch unlocking mechanism suitable for underwater environment according to claim 4 or 5, characterized in that: Water flows in through the gap between the hatch cover (1) and the dry cabin shell (2), and enters the wet cabin shell (3) through the hatch cover water inlet hole (8) provided on the hatch cover (1). In the process of the water flowing into the wet cabin shell (3), the water flows through the water-soluble fixing belt (7), and the soluble fixing belt (7) dissolves when it comes into contact with water, thereby unlocking the hatch.

7. The passive time-delay hatch unlocking mechanism suitable for underwater environment according to claim 1, characterized in that: The hatch cover (1), the hatch cover fixing ring (4), the hatch cover sealing ring (5), the water-soluble fixing belt (7), and the hatch cover fixing ring bolts (11) together form a "sandwich" structure.

8. The passive time-delay hatch unlocking mechanism suitable for underwater environment according to claim 7, characterized in that: The "sandwich" structure realizes a rigid connection between the hatch cover (1) and the hatch cover fixing ring (4), and through the characteristic of the water-soluble fixing belt (7) being soluble in water, the hatch can be unlocked and separated passively and delayed in an underwater environment.

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