Pressure balanced interlock release switch

Abstract

The present invention provides a pressure-balanced interlocking separation switch for an underwater vehicle, the pressure-balanced interlocking separation switch comprising: a shell, which is arranged on the underwater vehicle, and the shell is provided with an opening; a sealing cover assembly, comprising a cover body, an elastic cover and a push-pull rod, the cover body is arranged on the opening, and the cover body is provided with a water inlet hole; the elastic cover is connected to the cover body and is located inside the shell, a first cavity is formed between the elastic cover and the shell, and an insulating liquid is placed in the first cavity; a second cavity is formed between the elastic cover and the cover body, and the second cavity is connected to the water inlet hole; a push-pull rod is penetrated through the cover body and the elastic cover, and at least part of the push-pull rod is located in the first cavity, and a rope threading hole is provided on the push-pull rod; a pull rope, one end of the pull rope is connected to the rope threading hole, and the other end of the pull rope is used for fixed connection with a ship platform, wherein the push-pull rod can move relative to the cover body and the elastic cover so that the rope threading hole is located outside the shell, so that the pull rope can be separated from the rope threading hole.

Description

Technical Field

[0001] The invention belongs to the technical field of underwater separation, and in particular relates to a pressure-balanced interlocking separation switch. Background Art

[0002] In the related art, in order to meet the need for safe separation of underwater vehicles and ship platforms and obtain a safe separation signal, a pressure-balanced interlocking separation switch is used. The characteristic of displacement between the underwater vehicle and the platform after movement is utilized to release the pull rope preset on the separation switch, so that the internal spring pushes the short-circuit component to short-circuit or disconnect the connector line, thereby achieving the purpose of identifying the signal. When the separation switch is used underwater, the pressure generated by the water under great depth conditions will make it difficult to pull the pull rope to release it. Summary of the invention

[0003] An embodiment of the present invention provides a pressure-balanced interlocking release switch.

[0004] The pressure-balanced interlocking separation switch provided by the present invention is used for an underwater vehicle, and the pressure-balanced interlocking separation switch comprises: a shell, which is arranged on the underwater vehicle, and the shell is provided with an opening; a sealing cover assembly, comprising a cover body, an elastic cover and a push-pull rod, the cover body is arranged on the opening, and the cover body is provided with a water inlet hole; the elastic cover is connected to the cover body and is located inside the shell, a first cavity is formed between the elastic cover and the shell, and an insulating liquid is placed in the first cavity; a second cavity is formed between the elastic cover and the cover body, and the second cavity is connected to the water inlet hole; a push-pull rod is penetrated by the cover body and the elastic cover, and at least part of the push-pull rod is located in the first cavity, and a rope threading hole is provided on the push-pull rod; a pull rope, one end of the pull rope is connected to the rope threading hole, and the other end of the pull rope is used for fixed connection with the ship platform, wherein the push-pull rod can move relative to the cover body and the elastic cover so that the rope threading hole is located outside the shell, so that the pull rope can be separated from the rope threading hole.

[0005] The beneficial effects brought by the present invention are as follows:

[0006] It can be seen from the above scheme that an embodiment of the present invention provides a pressure-balanced interlocking separation switch, which can be specifically applied to underwater vehicles to determine the positional relationship between the underwater vehicle and the ship platform.

[0007] The pressure-balanced interlocking separation switch comprises a housing, a cover assembly and a pull rope. The housing is arranged on the underwater vehicle, the housing is provided with an opening, and the housing is the basic component of the entire pressure-balanced interlocking separation switch.

[0008] The sealing assembly consists of a cover body, an elastic cover and a push-pull rod. The cover body is arranged on the opening of the shell, and a water inlet hole is arranged on the cover body. The water inlet hole is a channel for the flow of external water medium and is one of the key structures for achieving pressure balance.

[0009] The elastic cover is connected to the cover body and is located inside the shell. The elastic cover is separated, and a first cavity is formed between the elastic cover and the shell. The first cavity contains insulating liquid, which can realize internal and external pressure transmission and ensure that the circuit elements in the first cavity will not short-circuit.

[0010] A second cavity is formed between the elastic cover and the cover body. The material of the elastic cover is selected so that it can deform when the external pressure changes, thereby changing the volume of the two cavities.

[0011] The push-pull rod is inserted into the cover body and the elastic cover, and part of the push-pull rod is located in the first cavity. A rope threading hole is provided on the push-pull rod for connecting the pull rope. The movement of the push-pull rod is the basis for generating the separation signal.

[0012] One end of the pull rope is connected to the rope threading hole of the push-pull rod, and the other end is used to be fixedly connected to the ship platform. When the underwater vehicle is separated from the ship platform, the pull rope is subjected to tension, thereby driving the push-pull rod to move.

[0013] The pressure-balanced interlocking separation switch proposed by the present invention utilizes the water inlet hole to allow the external water medium to contact the elastic cover, thereby transmitting the external pressure to the elastic cover. When the external pressure increases, the elastic cover will deform, and the volume of the first cavity and the second cavity will be changed accordingly, so as to realize the transmission of internal and external pressures and maintain the balance of internal and external pressures. The present invention can offset the influence of the external pressure on the movement of the push-pull rod through the change of volume, thereby realizing pressure balance.

[0014] In summary, through the synergistic effect of the water inlet hole and the elastic cover, the pressure-balanced interlocking separation switch of the present invention can maintain the stable movement of the internal structure when the external pressure changes, thereby achieving reliable separation under great depth conditions. The movement of the push-pull rod will not be disturbed by the water pressure, so that the separation state between the underwater vehicle and the ship platform can be accurately reflected. The problem encountered in the separation of the underwater vehicle and the ship platform in the related art is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 One of the structural schematic diagrams showing a pressure-balanced interlocking disconnect switch according to an embodiment of the present invention:

[0016] Figure 2 A second structural schematic diagram showing a pressure-balanced interlocking release switch according to an embodiment of the present invention;

[0017] Figure 3 A schematic structural diagram showing a cover assembly according to an embodiment of the present invention;

[0018] Figure 4 A schematic diagram showing the structure of a switching assembly according to an embodiment of the present invention;

[0019] Figure 5 A schematic diagram showing the structure of an elastic cover according to an embodiment of the present invention;

[0020] Figure 6 A schematic structural diagram of a shorting ring according to an embodiment of the present invention is shown.

[0021] Figures 1 to 6 , 110 shell, 112 opening, 114 liquid injection port, 116 liquid outlet, 120 cover assembly, 122 cover body, 124 water inlet hole, 126 elastic cover, 128 push-pull rod, 129 first limit part, 130 elastic member, 132 second sealing ring, 134 first retaining ring, 135 mounting member, 136 rope threading hole, 138 shorting ring, 140 first sleeve, 142 metal layer, 144 second sleeve, 146 first retaining ring, 150 first cavity, 152 second cavity, 160 adapter assembly, 162 mounting member Mounting seat, 164 mounting plate, 166 third cavity, 168 third through hole, 170 second limiting portion, 172 reed tube, 174 third sleeve, 176 reed, 178 first reed, 180 first body, 182 first contact, 184 second reed, 186 second body, 188 second contact, 190 adapter plate, 192 second retaining ring, 194 adapter connector, 195 watertight connector, 196 first sealing ring, 197 second retaining ring, 198 pull rope, 199 plug, 200 third sealing ring. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all 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.

[0023] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, in one embodiment of the present invention, a pressure-balanced interlocking separation switch is proposed, which is used for an underwater vehicle. The pressure-balanced interlocking separation switch includes a housing 110, which is arranged in the underwater vehicle, and the housing 110 is provided with an opening 112; a cover assembly 120, including a cover body 122, an elastic cover 126 and a push-pull rod 128, the cover body 122 is arranged in the opening 112, and the cover body 122 is provided with a water inlet hole 124; the elastic cover 126 is connected to the cover body 122 and is located inside the housing 110, and a first cavity 150 is formed between the elastic cover 126 and the housing 110, and the first cavity 150 contains an insulating liquid; the elastic cover A second cavity 152 is formed between 126 and the cover body 122, and the second cavity 152 is connected to the water inlet hole 124; a push-pull rod 128 is passed through the cover body 122 and the elastic cover 126, and at least part of the push-pull rod 128 is located in the first cavity 150, and a rope threading hole 136 is provided on the push-pull rod 128; a pull rope 198, one end of the pull rope 198 is connected to the rope threading hole 136, and the other end of the pull rope 198 is used for fixed connection with the ship platform, wherein the push-pull rod 128 can move relative to the cover body 122 and the elastic cover 126, so that the rope threading hole 136 is located outside the shell 110, so that the pull rope 198 can be detached from the rope threading hole 136.

[0024] In this embodiment, the present invention provides a pressure-balanced interlocking separation switch, which can be specifically applied to an underwater vehicle to determine the positional relationship between the underwater vehicle and the ship platform.

[0025] The pressure-balanced interlocking release switch comprises a housing 110, a cover assembly 120 and a pull rope 198. The housing 110 is disposed on the underwater vehicle, and the housing 110 is provided with an opening 112. The housing 110 is a basic component of the entire pressure-balanced interlocking release switch.

[0026] The cover assembly 120 is composed of a cover body 122, an elastic cover 126 and a push-pull rod 128. The cover body 122 is disposed on the opening 112 of the housing 110, and a water inlet hole 124 is disposed on the cover body 122. The water inlet hole 124 is a channel for the external water medium to flow and is one of the key structures for achieving pressure balance.

[0027] The elastic cover 126 is connected to the cover 122 and is located inside the housing 110. The elastic cover 126 is separated, and a first cavity 150 is formed between the elastic cover 126 and the housing 110. The first cavity 150 contains insulating liquid, and a second cavity 152 is formed between the elastic cover 126 and the cover 122. The material of the elastic cover 126 is selected so that it can be deformed when the external pressure changes, thereby changing the volume of the two cavities.

[0028] The push-pull rod 128 is inserted through the cover 122 and the elastic cover 126, and part of the push-pull rod 128 is located in the first cavity 150. A rope threading hole 136 is provided on the push-pull rod 128 for connecting the pull rope 198. The movement of the push-pull rod 128 is the basis for generating the separation signal.

[0029] One end of the pull rope 198 is connected to the rope threading hole 136 of the push-pull rod 128, and the other end is used to be fixedly connected to the ship platform. When the underwater vehicle is separated from the ship platform, the pull rope 198 is subjected to tension, thereby driving the push-pull rod 128 to move.

[0030] The pressure-balanced interlocking disconnect switch proposed by the present invention utilizes the water inlet hole 124 to allow the external water medium to contact the elastic cover 126, thereby transmitting the external pressure to the elastic cover 126. When the external pressure increases, the elastic cover 126 will deform, and the volumes of the first cavity 150 and the second cavity 152 will change accordingly. The change in volume can offset the effect of the external pressure on the movement of the push-pull rod 128, thereby achieving pressure balance.

[0031] For example, when the external pressure is greater than the internal pressure, such as when the underwater vehicle is in a deep water area, the external water medium will enter the second cavity 152 through the water inlet 124 and exert pressure on the elastic cover 126. The elastic cover 126 will deform after being subjected to pressure, thereby increasing the volume of the second cavity 152 and correspondingly reducing the volume of the first cavity 150. This redistribution of volume can achieve pressure balance on both sides of the elastic cover 126, thereby offsetting the additional resistance generated by the external pressure on the push-pull rod 128, so that the movement of the push-pull rod 128 will not become difficult. At the same time, since the deformation of the elastic cover 126 is continuous and reversible, when the external pressure decreases, the elastic cover 126 will return to its original state, and the volumes of the two cavities will also return to their initial states.

[0032] The insulating liquid can effectively isolate the electrical components in the first cavity 150 to prevent current leakage or short circuit, thereby ensuring the electrical safety of the disconnect switch during operation.

[0033] Under extreme conditions, such as when the underwater depth changes dramatically, the insulating liquid can also provide a certain pressure buffering effect, reducing the direct impact of external pressure on the internal structure of the disconnector.

[0034] Specifically, the insulating liquid includes transformer oil or other insulating oils with stable chemical properties.

[0035] In summary, through the synergistic effect of the water inlet hole 124 and the elastic cover 126, the pressure-balanced interlocking separation switch of the present invention can maintain the stable movement of the internal structure when the external pressure changes, thereby achieving reliable separation under great depth conditions. The movement of the push-pull rod 128 will not be disturbed by the water pressure, so that the separation state between the underwater vehicle and the ship platform can be accurately reflected. The problem encountered in the safe separation of the underwater vehicle and the ship platform in the related art is solved.

[0036] Specifically, the cover body 122 is a T-shaped structure, a first through hole is provided at the center of the cover body 122 , and the push-pull rod 128 is passed through the first through hole to achieve movement relative to the cover body 122 .

[0037] Specifically, there are multiple water inlet holes 124 , and the multiple water inlet holes 124 are evenly distributed in the circular circumferential direction on the upper surface of the cover body 122 .

[0038] Specifically, the number of the water inlets is 4, and the 4 water inlet holes 124 are evenly distributed along the circumference of the first through hole.

[0039] Specifically, a second through hole is provided at the center of the elastic cover 126 , and the push-pull rod 128 passes through the second through hole to achieve movement relative to the elastic cover 126 .

[0040] Specifically, the elastic cover 126 includes a rubber cup, which has a straw hat-shaped structure. Eight mounting holes are evenly distributed axially in the circular circumferential direction on the bottom and outer rim of the rubber cup. The skeleton structure of the rubber cup can meet the requirements of bidirectional deformation while preventing it from flipping inside and outside.

[0041] Specifically, a threaded hole is provided at the top of the push-pull rod 128 to facilitate the installation operation of the pulling tool.

[0042] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, in some embodiments of the present invention, optionally, a liquid injection port 114 is provided on the side of the shell 110 facing away from the outlet 112, and the liquid injection port 114 is connected to the first cavity 150. The liquid injection port 114 is used to inject liquid into the first cavity 150 so that the first cavity 150 is filled with insulating liquid.

[0043] In this embodiment, a structure for injecting liquid into the first shell is defined, and a liquid injection port 114 is provided on the side of the shell 110 away from the outlet 112. The liquid injection port 114 is used to inject insulating liquid. The liquid injection port 114 is connected to the first cavity 150. After the insulating liquid flows to the liquid injection port 114, it can smoothly flow into the first cavity 150 to achieve insulation, prevent current leakage or short circuit, and achieve pressure transmission.

[0044] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, in some embodiments of the present invention, optionally, the pressure-balanced interlocking separation switch further includes: a plug 199 disposed at the liquid injection port 114 ; and a first sealing ring 196 disposed between the plug 199 and the inner wall of the liquid injection port 114 .

[0045] In this embodiment, the liquid injection port 114 is blocked after the liquid injection is completed. Specifically, the pressure-balanced interlocking disconnect switch further includes a plug 199 and a first sealing ring 196. The plug 199 is disposed at the liquid injection port 114. The plug 199 is a component for closing the liquid injection port 114. The plug 199 matches the shape and size of the liquid injection port 114 to ensure that the insulating liquid can be effectively prevented from leaking or external impurities can be effectively prevented from entering the first cavity 150 in a closed state.

[0046] The first sealing ring 196 is disposed between the plug 199 and the inner wall of the liquid injection port 114 to further enhance the sealing effect. When the plug 199 is installed on the liquid injection port 114, the first sealing ring 196 will be compressed and tightly fit between the plug 199 and the inner wall of the liquid injection port 114, thereby forming a reliable sealing barrier. This sealing barrier can effectively prevent the leakage of the insulating liquid, and can also prevent external moisture, gas and impurities from entering the first cavity 150, thereby ensuring the working performance and safety of the disconnector.

[0047] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, in some embodiments of the present invention, optionally, a liquid outlet 116 is provided on the side of the housing 110 facing away from the outlet 112, and the liquid outlet 116 is communicated with the first cavity 150, and the liquid outlet 116 is used to discharge liquid from the first cavity 150. There are two plugs 199, one plug 199 is provided at the liquid injection port 114, and the other plug 199 is provided at the liquid outlet 116; there are two first sealing rings 196, one first sealing ring 196 is provided between the plug 199 and the inner wall of the liquid injection port 114, and the other first sealing ring 196 is provided between the plug 199 and the inner wall of the liquid outlet 116.

[0048] In this embodiment, the present invention sets a liquid outlet 116 at the bottom end of the housing 110. The liquid outlet 116 is located at the bottom end of the housing 110 and is designed to provide a discharge channel when filling the insulating liquid. When the insulating liquid is injected into the housing 110 through the liquid injection port 114, the excess insulating liquid will be discharged from the liquid outlet 116, thereby ensuring that the insulating liquid filling amount in the housing 110 meets the design requirements.

[0049] Insulating liquid is injected into the inner cavity of the housing 110 through the injection hole. During the injection process, it is necessary to control the injection speed and observe the outflow of insulating liquid from the drain hole. When the insulating liquid begins to flow out steadily from the liquid outlet 116, it means that the inner cavity of the housing 110 has been fully filled with insulating liquid. Once the insulating liquid flows out from the liquid outlet 116 and reaches the required filling amount, the injection port 114 and the liquid outlet 116 are blocked by the plug 199 and the first sealing ring 196.

[0050] Specifically, the first sealing ring 196 is an O-ring.

[0051] Specifically, the plug 199 and the first sealing ring 196 are an integrated structure, that is, the plug 199 is a plug with an O-ring.

[0052] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, in some embodiments of the present invention, optionally, the cover assembly 120 also includes: a second sealing ring 132, arranged between the push-pull rod 128 and the inner wall of the cover body 122; and a first retaining ring 134, arranged on the side of the elastic cover 126 away from the cover body 122.

[0053] In this embodiment, the second sealing ring 132 is arranged between the push-pull rod 128 and the inner wall of the cover body 122. The second sealing ring provides a seal between the push-pull rod 128 and the cover body 122 to prevent external moisture, gas or impurities from entering the inner cavity of the shell 110 through the gap between the push-pull rod 128 and the cover body 122.

[0054] Specifically, Figure 1 As shown, there are two second sealing rings 132 , and the two second sealing rings 132 are sleeved on the push-pull rod 128 at intervals.

[0055] Specifically, the second sealing ring 132 is an O-ring.

[0056] The cover assembly 120 also includes a component for limiting the elastic cover 126 .

[0057] The first retaining ring 134 is disposed on the side of the elastic cover 126 away from the cover body 122; the main function of the first retaining ring 134 is to serve as a support and limit structure for the elastic cover 126. It can prevent the elastic cover 126 from excessive deformation when subjected to external pressure or internal pressure, thereby protecting the elastic cover 126 and internal components such as the push-pull rod 128 from damage.

[0058] Specifically, the pressure-balanced interlocking disconnect switch further includes: a mounting member 135, which is inserted through the first retaining ring 134, the elastic cover 126 and the cover body 122. The main function of the mounting member 135 is to fix the first retaining ring 134, the elastic cover 126 and the cover body 122 together to form a complete cover assembly 120. Specifically, the mounting member 135 includes a bolt, a nut or other fasteners.

[0059] Specifically, the elastic cover 126 includes a rubber cup, which is buckled onto the cover body 122 and then assembled with a first retaining ring 134 . The rubber cup is locked onto the cover body 122 by screws, and a push-pull rod 128 with two O-rings is installed, passing through the rubber cup and the center of the cover body 122 .

[0060] Specifically, through holes are provided at the center of the cover body 122 and the rubber cup, and two circles of evenly distributed through holes are axially provided in the circular circumferential direction on the bottom and the outer flange; circumferentially evenly distributed through holes consistent with the position of the rubber cup are provided on the first retaining ring 134; four water inlet holes 124 are evenly distributed in the circular circumferential direction on the upper surface of the cover body 122, so that the external water medium contacts the rubber cup and the generated pressure is transmitted to the rubber cup; two circles of circumferentially evenly distributed threaded holes are provided at the positions corresponding to the through holes of the cover body 122 and the rubber cup for installing fixing screws.

[0061] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, in some embodiments of the present invention, optionally, the cover assembly 120 further includes: a shorting ring 138, which is sleeved on the push-pull rod 128 and is close to the end of the push-pull rod 128 away from the cover body 122; an elastic member 130, which is sleeved on the push-pull rod 128 and is located in the first cavity 150, and a first limiting portion 129 is provided on the push-pull rod 128; one end of the elastic member 130 abuts against the first limiting portion 129, and the other end of the elastic member 130 abuts against the first baffle ring 134; the pressure-balanced interlocking separation switch further includes: a switching assembly 160, which is disposed in the first cavity 150, and the switching assembly 160 includes a mounting seat 162 and a reed tube 172, and the mounting seat 16 2 is connected to the inner wall of the shell 110, and the other side of the mounting seat 162 is connected to the reed tube 172. The interior of the reed tube 172 is radially provided with a first contact 182 and a second contact 188; the push-pull rod 128 has a first position and a second position, wherein the push-pull rod 128 moves to the first position, the pull rope 198 is connected to the rope threading hole 136, the elastic member 130 is compressed, the short-circuit ring 138 contacts the first contact 182 and separates from the second contact 188; the pull rope 198 separates from the push-pull rod 128, the elastic member 130 pushes the push-pull rod 128 to move to the second position, the short-circuit ring 138 separates from the first contact 182 and contacts the second contact 188.

[0062] In this embodiment, the cover assembly 120 further includes an elastic member 130 and a shorting ring 138, wherein the shorting ring 138 is sleeved on the push-pull rod 128 and is close to one end of the push-pull rod 128 away from the cover body 122. The shorting ring 138 plays the role of electrical contact during the movement of the push-pull rod 128. The elastic member 130 is sleeved on the push-pull rod 128 and is located in the first cavity 150. A first limiting portion 129 is provided on the push-pull rod 128, one end of the elastic member 130 abuts against the first limiting portion 129, and the other end abuts against the retaining ring. The elastic member 130 plays a resetting role. When the pull rope 198 is connected to the push-pull rod 128, the elastic member 130 is compressed; when the pull rope 198 is separated from the push-pull rod 128, the elastic member 130 pushes the push-pull rod 128 back to the original position.

[0063] The pressure-balanced interlocking disconnect switch further includes an adapter assembly 160, which is disposed in the first cavity 150. The adapter assembly 160 includes a mounting seat 162 and a reed barrel 172. One side of the mounting seat 162 is connected to the inner wall of the housing 110, and the other side is connected to the reed barrel 172. A first contact 182 and a second contact 188 are radially disposed inside the reed barrel 172. The contacts in the reed barrel 172 cooperate with the shorting ring 138 to realize the on-off of the circuit.

[0064] When the push-pull rod 128 moves to the first position, the pull rope 198 is connected to the rope threading hole 136, and the elastic member 130 is compressed. The shorting ring 138 contacts the first contact point 182 and separates from the second contact point 188, and the first contact point 182 realizes the shorting function.

[0065] When the pull rope 198 is separated from the push-pull rod 128, the elastic member 130 pushes the push-pull rod 128 to move to the second position. The shorting ring 138 is separated from the first contact point 182 and contacts the second contact point 188, and the second contact point 188 realizes the shorting function.

[0066] The present invention adopts an internal and external pressure balance method to overcome the friction of the pull rope 198 caused by the back pressure during the movement of the underwater vehicle at great depth, thereby reducing the influence of the pull rope 198 on the underwater vehicle during the separation process. The two interlocking states of its internal electrical circuit can serve as an identification path to reliably identify the position movement between the underwater vehicle and the platform, thereby improving the reliability of the underwater vehicle identification and the separation state from the platform.

[0067] Specifically, the reed tube 172 includes a non-metallic sleeve, which is an I-shaped flange structure. The reed tube 172 is integrally formed by a mold injection molding process. The reed tube 172 is installed in the mounting seat 162 and is fixed by a second retaining ring 192 .

[0068] A shorting ring 138 is installed on the other end of the push-pull rod 128 and is fixed by a first retaining ring 146. Specifically, a shaft shoulder and a retaining ring installation groove are provided at the bottom end of the push-pull rod 128 for limiting the position of the shorting ring 138.

[0069] Specifically, the elastic member 130 includes a spring. To facilitate overall assembly, after the cover assembly 120 is assembled, the spring is compressed by a tool acting on the first limit portion 129 of the push-pull rod 128, and the push-pull rod 128 is pushed to move in the through hole of the cover body 122. When the end surface of the push-pull rod 128 protrudes from the cover body 122, a pull rope 198 is passed through the push-pull rod 128, so that the spring is in a compressed state in the cover assembly 120. A shorting ring 138 is installed on the other end of the push-pull rod 128, and is limited and fixed by a first retaining ring 146.

[0070] like Figure 1 and Figure 4As shown, in some embodiments of the present invention, optionally, a third cavity 166 is provided in the mounting seat 162, and a third through hole 168 is provided on the mounting seat 162, and the third through hole 168 is connected to the third cavity 166; the reed tube 172 is provided in the third cavity 166, and the push-pull rod 128 is passed through the third through hole 168; a second limiting portion 170 is also provided at one end of the mounting seat 162, and the third limiting portion 170 is located on the peripheral side of the third through hole 168, and the second limiting portion 170 can abut against the first limiting portion 129 to cooperate with the elastic member 130 to move and fix the push-pull rod 128 to the second position.

[0071] In this embodiment, the structure of the mounting seat 162 is further defined, and a third cavity 166 is provided inside the mounting seat 162, and the third cavity 166 provides a mounting space for the reed tube 172. A third through hole 168 is provided on the mounting seat 162, and the third through hole 168 is connected to the third cavity 166. The push-pull rod 128 penetrates into the third cavity 166 through the third through hole 168 and cooperates with the contact in the reed tube 172.

[0072] The second limiting portion 170 is disposed at one end of the mounting seat 162, and is located around the third through hole 168. The second limiting portion 170 cooperates with the first limiting portion 129 on the push-pull rod 128, and cooperates with the elastic member 130 to ensure that the push-pull rod 128 can stably stay in the second position during the movement. When the elastic member 130 pushes the push-pull rod 128 to move, the first limiting portion 129 will contact the second limiting portion 170, thereby limiting the further movement of the push-pull rod 128 and fixing it in the second position.

[0073] Specifically, when the push-pull rod 128 is lifted, the first limiting portion 129 acts on the elastic member 130 to compress it, and the first limiting portion 129 will move away from the second limiting portion 170. By installing the pull rope 198 to the rope threading hole 136 for limiting, the movement of the push-pull rod 128 is restricted and fixed in the first position. At this time, the short-circuiting ring 138 contacts the first contact 182 in the reed tube 172, the first contact 182 realizes the short-circuiting function, and the second contact 188 is disconnected.

[0074] Specifically, when the pull rope 198 is separated from the push-pull rod 128, the elastic member 130 begins to release energy, pushing the push-pull rod 128 to move in the opposite direction. During the movement, the first limit portion 129 gradually approaches the second limit portion 170. When the two are in contact, the movement of the push-pull rod 128 is restricted and fixed in the second position. At this time, the short-circuit ring 138 contacts the second contact 188 in the reed tube 172, the second contact 188 realizes the short-circuit function, and the first contact 182 is disconnected.

[0075] Specifically, the mounting seat 162 is also provided with a through hole for the insulating liquid to pass through, and is provided with a threaded hole for installing and fixing the second retaining ring 192; through holes are provided in the radial direction of the reed tube 172 and in the axial and radial directions of the mounting seat 162, so that the insulating liquid can flow freely between the inner and outer cavities of the reed tube 172, the upper and lower sides of the mounting seat 162, and between the inner and outer cavities of the mounting seat 162.

[0076] like Figure 1 and Figure 6 As shown, in some embodiments of the present invention, optionally, the shorting ring 138 includes: a first sleeve 140, which is arranged on the push-pull rod 128; a second sleeve 144, which is arranged on the first sleeve 140; and a metal layer 142, wherein the inner side of the metal layer 142 is connected to the second sleeve 144, and the outer side of the metal layer 142 can contact the first contact 182 or the second contact 188, so as to short-circuit the first contact 182 or the second contact 188. In this embodiment, the structure of the shorting ring 138 is defined, and in the present invention, the shorting ring 138 is a structure in which a non-metallic insulating material sleeve and a metal conductive material sleeve are embedded.

[0077] The shorting ring 138 includes a first sleeve 140, a second sleeve 144 and a metal layer 142. The first sleeve 140 plays a supporting and positioning role, ensuring that the shorting ring 138 can be stably sleeved on the push-pull rod 128. The second sleeve 144 is arranged on the first sleeve 140. The inner side of the metal layer 142 is connected to the second sleeve 144, and the outer side is in contact with the first contact 182 or the second contact 188. The metal layer 142 is a film or sheet made of a conductive material.

[0078] The metal layer 142 is the core part of the shorting ring 138, which plays the role of conducting electricity and shorting. When the push-pull rod 128 moves to different positions, one end of the metal layer 142 can contact the first contact 182 or the second contact 188 in the reed tube 172, so that the two contacts are short-circuited. This short-circuiting operation can change the on-off state of the circuit.

[0079] The first sleeve 140 and the second sleeve 144 can prevent the metal layer 142 from being in contact with the first contact 182 and the second contact 188 at the same time.

[0080] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, in some embodiments of the present invention, optionally, along the axial direction of the reed tube 172 , the distance between the first contact 182 and the second contact 188 is greater than the axial thickness of the first sleeve 140 .

[0081] In this embodiment, the distance between the first contact 182 and the second contact 188 is greater than the axial thickness of the first sleeve 140. When the shorting ring 138 moves, its metal layer 142 can only contact one of the contacts, but not both contacts at the same time. This ensures that the on / off state of the circuit can be switched stably and reliably.

[0082] Specifically, the contacts of the first reed 178 and the second reed 184 are installed on the inner wall of the reed tube 172, and are arranged up and down. The spacing between the up and down arrangements is greater than the width of the metal part of the short-circuit ring 138, ensuring that the push-pull rod 128 only contacts one of the contacts at one position at the same time during the movement of the short-circuit ring 138.

[0083] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, in some embodiments of the present invention, optionally, the reed tube 172 includes: a third sleeve 174, connected to the mounting seat 162; a reed 176, the reed 176 includes: a first reed 178, including a first body 180 and a first contact 182 connected to the first body 180, the first body 180 is arranged on the outside of the third sleeve 174, the first contact 182 is penetrated by the third sleeve 174 and located inside the third sleeve 174; a second reed 184 is arranged inside the third sleeve 174, the second reed 184 includes a second body 186 and a second contact 188 connected to the second body 186.

[0084] In this embodiment, the reed tube 172 includes a third sleeve 174 . The third sleeve 172 is connected to the mounting seat 162 . The third sleeve 174 is the main structural component of the reed tube 172 . The reed 176 is disposed on the third sleeve 174 .

[0085] The reed 176 includes a first reed 178 and a second reed 184. The first reed 178 includes a first body 180 and a first contact 182 connected to the first body 180. The first body 180 is disposed outside the third sleeve 174, while the first contact 182 is penetrated through the third sleeve 174 and located inside the third sleeve 174. This design enables the first contact 182 to reliably contact with the shorting ring 138, while the first body 180 is located outside the third sleeve 174, avoiding direct contact with the second reed 184.

[0086] The second reed 184 is disposed inside the third sleeve 174, and includes a second body 186 and a second contact 188 connected to the second body 186. The second reed 184 and the first reed 178 are arranged opposite to each other inside the third sleeve 174, but a certain distance is maintained between the two to prevent direct contact. This design ensures that the second contact 188 can also make reliable contact with other components, while avoiding the risk of short circuit with the first reed 178.

[0087] By arranging the first reed 178 and the second reed 184 outside and inside the third sleeve 174 respectively, effective isolation between the two is achieved.

[0088] like Figure 1 As shown, in some embodiments of the present invention, optionally, the adapter assembly 160 also includes: an adapter plate 190, the adapter plate 190 is connected to the first reed 178 and the second reed 184; an adapter connector 194, one end of the adapter connector 194 is connected to the adapter plate 190, and the pressure-balanced interlocking separation switch also includes: a watertight connector 195, one end of the watertight connector 195 is connected to the other end of the adapter connector 194, and the other end of the watertight connector 195 is passed through the shell 110 and is located outside the first cavity 150.

[0089] In this embodiment, the adapter assembly 160 further includes an adapter plate 190 , which is connected to the first reed 178 and the second reed 184 to connect the first reed 178 and the second reed 184 to form an electrical path.

[0090] The adapter assembly 160 also includes an adapter connector 194, one end of a watertight connector 195 is connected to the other end of the adapter connector 194, and the other end of the watertight connector 195 is passed through the shell 110 and is located outside the first cavity 150. The watertight connector 195 can transmit the circuit signal on the adapter board 190 to the outside through the adapter connector 194, thereby determining the state of the underwater vehicle position separation switch.

[0091] Specifically, the first spring piece 178 and the second spring piece 184 are fixed on the adapter plate 190 after passing through the second retaining ring 192, and the adapter connector 194 is also fixed on the adapter plate 190. The adapter plate 190 and the second retaining ring 192 are fixed on the mounting base 162 by screws.

[0092] Specifically, during assembly, the adapter assembly 160 is pressed and fixed in the shell 110 by the second retaining ring 197, and then the push-pull rod 128 of the cover assembly 120 with the shorting ring 138 is passed through the adapter assembly 160, and the cover assembly 120 is fixed to the shell 110 by screws. Finally, the watertight connector 195 with the third sealing ring 200 is assembled on the shell 110 and installed and tightened by screw locking.

[0093] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, in some embodiments of the present invention, optionally, the number of the first reeds 178 is two, along the radial direction ( Figure 4 The two first reeds 178 are respectively located on one side of the third sleeve 174; the number of the second reeds 184 is two, along the radial direction of the third sleeve 174 ( Figure 4 The two second spring leaves 184 are respectively located on one side of the third sleeve 174 .

[0094] In this embodiment, two first reeds 178 are located on both sides of the third sleeve 174, and two second reeds 184 are also located on both sides of the reed barrel 172, arranged opposite to the first reed 178. By providing two first reeds 178 and two second reeds 184, the number of contacts of the switch is increased, which helps to improve the reliability and durability of the switch. Even if one of the contacts fails, the other contacts can still continue to work.

[0095] Specifically, there are two first reeds 178 located on the outer side of the reed barrel 172 , namely A1 and A2 , and their first contacts 182 pass through the sleeve and are located at the inner upper end of the reed barrel 172 .

[0096] There are two second springs 184 located on the inner side of the reed tube 172, namely B1 and B2, and their contacts are located at the inner lower end of the reed tube 172. When the push-pull rod 128 moves in the inner cavity of the reed tube 172, the short-circuit ring 138107 contacts the two groups of contacts A1, A2 and B1, B2 respectively, but does not contact the two groups of contacts at the same time. The state presented by the pressure-balanced interlocking separation switch is shown in Table 1. When the push-pull rod 128 is pulled up, the short-circuit ring 138 on the push-pull rod 128 contacts the first contact 182 above the reed tube 172, realizing the short-circuit of the upper A1 and A2 contacts and the disconnection of the lower B1 and B2 contacts; when the push-pull rod 128 falls, the short-circuit ring 138 on the push-pull rod 128 contacts the second contact 188 below the reed tube 172, realizing the disconnection of the upper A1 and A2 contacts and the short-circuit of the lower B1 and B2 contacts. The motion separation between the underwater vehicle and the platform is identified through two state changes.

[0097] Table 1 Signal judgment and interlocking status of pressure balance interlocking separation switch

[0098]

[0099] In some embodiments of the present invention, two non-contacting metal shorting blocks are optionally embedded at equal intervals in the circumferential direction of the shorting ring 138. The number of the first reeds 178 is four, and the number of the second reeds 184 is four.

[0100] There are four first reeds 178 located on the outer side of the reed barrel 172 , namely A1 , A2 , A3 and A4 , and their first contacts 182 pass through the sleeve and are located at the inner upper end of the reed barrel 172 .

[0101] There are four second reeds 184 located on the inner side of the reed barrel 172 , namely B1 , B2 , B3 and B4 , and the second contact points 188 thereof are located at the inner lower end of the reed barrel 172 .

[0102] When the push-pull rod 128 is pulled up, the short-circuiting ring 138 on the push-pull rod 128 contacts the reed contact above the reed tube 172, thereby short-circuiting the upper A1 and A2 contacts, short-circuiting the A3 and A4 contacts, and disconnecting the lower B1 and B2 contacts, and disconnecting the B3 and B4 contacts.

[0103] When the push-pull rod 128 is dropped, the short-circuit ring 138 on the push-pull rod 128 contacts the reed contact below the reed tube 172, disconnecting the upper A1 and A2 contacts, disconnecting the A3 and A4 contacts, short-circuiting the lower B1 and B2 contacts, and short-circuiting the B3 and B4 contacts, thereby realizing the conduction or disconnection of two groups of four channels. Under this condition, the state of the pressure-balanced interlocking separation switch is as shown in Table 2.

[0104] Table 2 Signal judgment and interlocking status of pressure balance interlocking separation switch

[0105]

[0106] The above are preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A pressure-balanced interlocking release switch, characterized in that: For underwater vehicles, the pressure-balanced interlocking release switch comprises: A housing (110) is disposed on the underwater vehicle, and the housing (110) is provided with an opening (112); A cover assembly (120) comprises a cover body (122), an elastic cover (126) and a push-pull rod (128); the cover body (122) is arranged at the opening (112); and a water inlet hole (124) is arranged on the cover body (122); The elastic cover (126) is connected to the cover body (122) and is located inside the shell (110); a first cavity (150) is formed between the elastic cover (126) and the shell (110); and insulating liquid is contained in the first cavity (150); A second cavity (152) is formed between the elastic cover (126) and the cover body (122), and the second cavity (152) is communicated with the water inlet hole (124); A push-pull rod (128) is inserted through the cover body (122) and the elastic cover (126), and at least a portion of the push-pull rod (128) is located in the first cavity (150), and a rope threading hole (136) is provided on the push-pull rod (128); A pull rope (198), one end of which is connected to the rope threading hole (136), and the other end of which is fixedly connected to the ship platform, wherein the push-pull rod (128) is movable relative to the cover body (122) and the elastic cover (126) so that the rope threading hole (136) is located outside the shell (110) so that the pull rope (198) can be detached from the rope threading hole (136).

2. The pressure-balanced interlocking disconnect switch according to claim 1, characterized in that: A liquid injection port (114) is provided on a side of the shell (110) away from the opening (112), the liquid injection port (114) being in communication with the first cavity (150), and the liquid injection port (114) being used to inject liquid into the first cavity (150), so that the first cavity (150) is filled with the insulating liquid; The pressure-balanced interlocking disconnect switch further comprises: A plug (199) is arranged at the liquid injection port (114); A first sealing ring (196) is arranged between the plug (199) and the inner wall of the liquid injection port (114).

3. The pressure-balanced interlocking disconnect switch according to claim 1, characterized in that: The cover assembly (120) further comprises: A second sealing ring (132) is disposed between the push-pull rod (128) and the inner wall of the cover body (122); A first retaining ring (134) is arranged on a side of the elastic cover (126) facing away from the cover body (122).

4. The pressure-balanced interlocking disconnect switch according to claim 3, characterized in that: The cover assembly (120) further comprises: A shorting ring (138) is sleeved on the push-pull rod (128) and is close to an end of the push-pull rod (128) away from the cover body (122); An elastic member (130) is sleeved on the push-pull rod (128) and is located in the first cavity (150); A first limiting portion (129) is provided on the push-pull rod, one end of the elastic member (130) abuts against the first limiting portion (129), and the other end of the elastic member (130) abuts against the first retaining ring (134); The pressure-balanced interlocking disconnect switch further comprises: An adapter assembly (160) is disposed in the first cavity (150), the adapter assembly (160) comprising a mounting seat (162) and a reed tube (172), one side of the mounting seat (162) is connected to the inner wall of the housing (110), the other side of the mounting seat (162) is connected to the reed tube (172), and a first contact (182) and a second contact (188) are radially arranged inside the reed tube (172); The push-pull rod (128) has a first position and a second position, wherein the push-pull rod (128) moves to the first position, the pull rope (198) is connected to the rope threading hole (136), the elastic member (130) is compressed, and the shorting ring (138) contacts the first contact point (182) and is separated from the second contact point (188); The pull rope (198) is separated from the push-pull rod (128), the elastic member (130) pushes the push-pull rod (128) to move to the second position, and the short-circuit ring (138) is separated from the first contact point (182) and contacts the second contact point (188).

5. The pressure-balanced interlocking disconnect switch according to claim 4, characterized in that: A third cavity (166) is disposed in the mounting seat (162), a third through hole (168) is disposed on the mounting seat (162), and the third through hole (168) is communicated with the third cavity (166); The reed tube (172) is disposed in the third cavity (166), and the push-pull rod (128) passes through the third through hole (168); A second limiting portion (170) is also provided at one end of the mounting seat (162). The second limiting portion (170) is located on the peripheral side of the third through hole (168). The second limiting portion (170) can abut against the first limiting portion (129) to cooperate with the elastic member (130) to move and fix the push-pull rod (128) to the second position.

6. The pressure-balanced interlocking disconnect switch according to claim 4, characterized in that: The shorting ring (138) comprises: A first sleeve (140) is disposed on the push-pull rod (128); A second sleeve (144), disposed on the first sleeve (140); A metal layer (142), the inner side of the metal layer (142) is connected to the second sleeve (144), and the outer side of the metal layer (142) can contact the first contact (182) or the second contact (188) to short-circuit the first contact (182) or the second contact (188).

7. The pressure-balanced interlocking disconnect switch according to claim 6, characterized in that: Along the axial direction of the reed tube (172), the distance between the first contact point (182) and the second contact point (188) is greater than the axial thickness of the first sleeve (140).

8. The pressure-balanced interlocking disconnect switch according to claim 4, characterized in that: The reed barrel (172) comprises: The third sleeve (174) is connected to the mounting seat (162); A reed (176), the reed (176) comprising: A first reed (178), comprising a first body (180) and the first contact (182) connected to the first body (180), wherein the first body (180) is arranged outside the third sleeve (174), and the first contact (182) penetrates the third sleeve (174) and is located inside the third sleeve (174); The second reed (184) is arranged inside the third sleeve (174), and the second reed (184) includes a second body (186) and the second contact (188) connected to the second body (186).

9. The pressure-balanced interlocking disconnect switch according to claim 8, characterized in that: The adapter assembly (160) further includes: An adapter plate (190), the adapter plate (190) being connected to the first reed (178) and the second reed (184); An adapter connector (194), one end of which is connected to the adapter board (190). The pressure-balanced interlocking disconnect switch further comprises: A watertight connector (195), one end of the watertight connector (195) is connected to the other end of the adapter connector (194), and the other end of the watertight connector (195) is passed through the shell (110) and is located outside the first cavity (150).

10. The pressure-balanced interlocking disconnect switch according to claim 8, characterized in that: The number of the first reeds (178) is two, and along the radial direction of the third sleeve (174), the two first reeds (178) are respectively located on one side of the third sleeve (174); The number of the second reed leaves (184) is two, and along the radial direction of the third sleeve (174), the two second reed leaves (184) are respectively located on one side of the third sleeve (174).

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