Quick connection and separation turn-off device

Abstract

The invention discloses a quick connection and separation shutoff device which comprises a female end valve bank and a male end valve bank, the male end valve bank is arranged at the right end of the female end valve bank, the left end of the female end valve bank is installed at the hose end of one ship, the right end of the male end valve bank is installed at the hard pipe end of the other ship, and therefore a conveying system is built between the two ships. The male end valve group clamps or loosens the female end valve group through the connecting device, so that the two valve groups are connected or separated; meanwhile, in a connecting and clamping state, the male end valve group opens a valve element of the female end valve group through a switching device, internal channels of the two valve groups are opened and communicated, and conveying of a conveying system is started at the moment; in an emergency state, through the connecting device and the switching device of the male end valve group, emergency shutoff and separation of the female end valve group and the male end valve group are achieved, it is ensured that a pipeline is isolated from the outside before the conveying system is disengaged, and reliable sealing is achieved. The device is compact in structure, has quick connection and separation closing self-sealing functions at the same time, simplifies the structural arrangement, and meets the quick connection and reliable separation requirements of a low-temperature conveying and transferring system.

Description

Technical Field

[0001] This invention belongs to the technical field of LNG cryogenic transportation and transfer systems, and in particular, a rapid connection and disconnection device. Background Technology

[0002] With the increasing demand for the localization of high-tech marine equipment across the entire LNG industry chain, the localization of key equipment for my country's marine LNG transportation and transshipment systems is progressing steadily. Ensuring independent control over the core systems and key technologies of my country's marine LNG transportation and transshipment is of great significance for promoting the comprehensive localization of equipment in the marine LNG industry chain and guaranteeing the green and healthy development of the marine LNG industry chain.

[0003] To meet the requirements for connection and reliable separation in maritime LNG transportation and transshipment, the common approach is to connect an emergency disconnect device in series at one end of the transportation system and a connection device in series at the other end to satisfy the system's requirements for rapid connection and emergency disconnection. This series arrangement results in dispersed equipment, requiring separate drive systems on two separate ships, thus occupying deck space. Furthermore, when the rapid connection device is disconnected, both ends of the transportation pipeline are open to the atmosphere, preventing self-isolation and causing condensation to form inside the pipeline, potentially compromising its safety. Summary of the Invention

[0004] The purpose of this invention is to address the problems existing in the prior art by providing a rapid connection and disconnection device for LNG cryogenic transportation and transfer systems. This device integrates rapid connection and disconnection functions, enabling rapid connection and disconnection of the transportation and transfer systems, and also enabling the self-sealing function of the separation end of the transportation system during separation.

[0005] The technical solution to achieve the purpose of this invention is as follows: a quick connection and disconnection shut-off device, comprising a female valve group and a male valve group. The male valve group is located at the right end of the female valve group, the left end of the female valve group is installed on the hose end of one vessel, and the right end of the male valve group is installed on the rigid pipe end of another vessel, thereby establishing a conveying system between the two vessels. The male valve group clamps or releases the female valve group through a connecting device to achieve the connection or disconnection of the two valve groups. Simultaneously, in the connected and clamped state, the male valve group opens the valve core of the female valve group through a switching device, realizing the opening and connection of the internal channels of the two valve groups, at which point the conveying system is started. In an emergency, the male valve group and the female valve group are shut off and disconnected through the connecting device and the switching device of the male valve group, ensuring that the conveying system is isolated from the front pipeline and the outside, achieving reliable sealing.

[0006] Furthermore, the female valve assembly includes a female valve body, a female guide sleeve, a female valve core, and a female spring; the female valve body is a through-hole annular structure, the female guide sleeve is installed at one end of the through hole of the female valve body and is fixedly connected to the inner base of the female valve body, and the female guide sleeve is coaxially arranged with the female valve body; a female spring is provided in the female guide sleeve, one end of the female spring is fixedly connected to the bottom of the female guide sleeve, and the other end is connected to the female valve core. Under the action of the spring force of the female spring, the female valve core is always in contact with the inner base of the female valve body, thereby realizing the closure of the female valve assembly.

[0007] Furthermore, the male valve assembly includes a male valve body, a male guide sleeve, a male valve core, a male spring, and a push rod; the male valve body is a through-hole annular structure, the male guide sleeve is installed at one end of the through hole of the male valve body and is fixedly connected to the inner base of the male valve body, and the male guide sleeve is coaxially arranged with the male valve body; a male spring is provided in the male guide sleeve, one end of the male spring is fixedly connected to the bottom of the male guide sleeve, and the other end is connected to the male valve core. Under the action of the spring force of the male spring, the male valve core is always in contact with the inner base of the male valve body, so as to realize the closure of the female valve assembly.

[0008] Furthermore, the male valve group also includes a first driving component, which acts on the female valve group to open it, so that the internal channels of the two valve groups can be opened simultaneously, thus enabling the conveying conditions.

[0009] Furthermore, the first driving component acts on the female valve core of the female valve group, driving the female valve core to move to the left and separate from the inner base of the female valve body, thereby realizing the simultaneous opening of the internal channels of the two valve groups and enabling the conveying conditions.

[0010] Furthermore, the first driving component includes a push rod that passes through the male valve core and can move axially along the male valve core. Under the action of the switching device, the push rod extends to the left and acts on the female valve core of the female valve group to drive the female valve core to move to the left and separate from the inner base of the female valve body, thereby realizing the simultaneous opening of the internal channels of the two valve groups and enabling the conveying conditions.

[0011] Furthermore, the switching device includes a swing cylinder, a rotating shaft, a valve core crank, and a push rod crank. The swing cylinder is mounted on the outer housing of the male valve body. The rotating shaft is connected to the extension shaft of the swing cylinder. One end of the valve core crank is movably connected to the rotating shaft, and the other end is movably connected to the male valve core. One end of the push rod crank is movably connected to the rotating shaft, and the other end is movably connected to the push rod.

[0012] When the female valve assembly and the male valve assembly are connected or separated, the swing cylinder rotates counterclockwise or clockwise, driving the valve core crank to move the male valve core to the right or left to separate from or press against the inner base of the male valve body. At the same time, the rotation of the shaft drives the push rod crank to extend the push rod to the left, acting on the female valve core of the female valve assembly, causing the female valve core to move to the left and separate from the inner base of the female valve body, or driving the push rod crank to retract to the right. Under the spring force of the female valve core, the female valve core moves to the right and presses against the inner base of the female valve body, thus achieving simultaneous closure and sealing of the internal channels of both valve assemblies, enabling disengagement.

[0013] Furthermore, the connecting device includes a bracket, a clamping rod, a clamping spring assembly, a rocker arm, a hydraulic cylinder, and a guide rod;

[0014] Both ends of the bracket are fixedly connected to the outer shell of the male valve body, and one end of the bracket is connected to a guide rod. Both ends of the oil cylinder are respectively fixedly connected to the bracket. One end of the rocker arm is movably connected to the other end of the bracket, and this connection point is marked as point 01. At the same time, one end of the rocker arm is connected to the cylinder rod of the oil cylinder. The other end of the rocker arm is connected to one end of the clamping rod through a clamping spring assembly, and both ends of the clamping spring assembly are movably connected. The other end of the clamping rod is movably connected to one end of the bracket, and this connection point is marked as point 0.

[0015] When the female valve group and the male valve group are connected, under the guidance of the guide rod, when the flange faces of the male valve group and the female valve group are close to the contact state, the external control signal drives the cylinder rod of the oil cylinder to extend, push the rocker arm to rotate around point O1 on the bracket, and push the clamping rod to rotate around point O on the bracket through the clamping spring assembly, so that the clamping rod quickly presses the flange face of the female valve group, thereby realizing the rapid connection of the female valve group and the male valve group;

[0016] When the female valve group and the male valve group are separated, the cylinder rod is driven to retract, pushing the rocker arm to rotate in the opposite direction around point O1 on the bracket, and pulling the clamping rod to rotate in the opposite direction around point O on the bracket through the clamping spring assembly, so that the clamping rod can quickly disengage from the flange face of the female valve group, thereby realizing the rapid separation of the female valve group and the male valve group.

[0017] Furthermore, multiple connecting devices are provided and evenly distributed on the male valve body.

[0018] Furthermore, the movable connection adopts a pin connection.

[0019] Compared with the prior art, the significant advantages of this invention are:

[0020] (1) The LNG cryogenic transportation and transfer system quick connection and separation shut-off device proposed in this invention integrates quick connection and separation shut-off functions, realizes quick connection and separation of the transportation and transfer system, and can realize the self-sealing function of the separation end of the transportation system during separation.

[0021] (2) The device proposed in this invention has a compact structure and has the functions of quick connection, separation and self-sealing, which simplifies the structural layout and meets the requirements of quick connection and reliable separation of cryogenic conveying and transfer systems.

[0022] The present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0023] Figure 1 This is an external view of a quick connection and disconnection shutdown device in one embodiment.

[0024] Figure 2 This is a schematic diagram of the female valve assembly structure in one embodiment.

[0025] Figure 3 This is a schematic diagram of the male end valve assembly structure in one embodiment.

[0026] Figure 4 This is a schematic diagram of the connecting device structure in one embodiment. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0028] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0029] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0030] In one embodiment, combined Figure 1 A quick connection and disconnection shut-off device is provided, comprising a female valve group A and a male valve group B. The male valve group B is located at the right end of the female valve group A. The left end of the female valve group A is installed on the flexible hose end of one vessel, and the right end of the male valve group B is installed on the rigid pipe end of another vessel, thus establishing a conveying system between the two vessels. The male valve group B clamps or releases the female valve group A through a connecting device C, realizing the connection or disconnection of the two valve groups. Simultaneously, in the connected clamped state, the male valve group B opens the valve core of the female valve group A through a switching device D, realizing the opening and connection of the internal channels of the two valve groups, at which point the conveying system is started. In an emergency, the female valve group A and the male valve group B are shut off and disconnected through the connecting device C and the switching device D, ensuring that the conveying system is isolated from the front pipeline and the outside, achieving reliable sealing.

[0031] Furthermore, in one embodiment, combined with Figure 2 The female valve group A includes a female valve body A-1, a female guide sleeve A-2, a female valve core A-3, and a female spring A-4. The female valve body A-1 is a through-hole annular structure. The female guide sleeve A-2 is installed at one end of the through hole of the female valve body A-1 and is fixedly connected to the inner base of the female valve body A-1. At the same time, the female guide sleeve A-2 is coaxially arranged with the female valve body A-1. The female spring A-4 is installed in the female guide sleeve A-2. One end of the female spring A-4 is fixedly connected to the bottom of the female guide sleeve A-2, and the other end is connected to the female valve core A-3. Under the action of the spring force of the female spring A-4, the female valve core A-3 is always in contact with the inner base of the female valve body A-1, so as to realize the closure of the female valve group A.

[0032] Here, the female end guide sleeve A-2 is set to ensure the concentricity of the female end valve core A-3 and the female end valve body A-1, to prevent the valve core from being eccentric during movement, and to ensure that the valve core and the valve body base are in full contact to achieve a reliable seal.

[0033] Furthermore, in one embodiment, combined with Figure 3 The male valve assembly B includes a male valve body B-1, a male guide sleeve B-2, a male valve core B-3, a male spring B-4, and a push rod B-5. The male valve body B-1 is a through-hole annular structure. The male guide sleeve B-2 is installed at one end of the through hole of the male valve body B-1 and is fixedly connected to the inner base of the male valve body B-1. The male guide sleeve B-2 is coaxially arranged with the male valve body B-1. The male spring B-4 is installed in the male guide sleeve B-2. One end of the male spring B-4 is fixedly connected to the bottom of the male guide sleeve B-2, and the other end is connected to the male valve core B-3. Under the spring force of the male spring B-4, the male valve core B-3 is always in contact with the inner base of the male valve body B-1, thereby closing the female valve assembly B.

[0034] Furthermore, the male valve group B also includes a first driving component, which acts on the female valve group A to open it, so that the internal channels of the two valve groups can be opened simultaneously, thus enabling the conveying conditions.

[0035] Preferably, the first driving component acts on the female valve core A-3 of the female valve group A, driving the female valve core A-3 to move to the left and separate from the inner base of the female valve body A-1, thereby realizing the simultaneous opening of the internal channels of the two valve groups and enabling the conveying conditions.

[0036] Preferably, the first driving component includes a push rod B-5 that passes through the male valve core B-3 and can move axially along the male valve core B-3. The push rod B-5 extends to the left under the action of the switching device D and acts on the female valve core A-3 of the female valve group A, so as to drive the female valve core A-3 to move to the left and separate from the inner base of the female valve body A-1, thereby realizing the simultaneous opening of the internal channels of the two valve groups and enabling the conveying conditions.

[0037] After the male valve group B and the female valve group A are connected and clamped, when the valve core of the male valve group B opens, the push rod B-5 extends and acts on the female valve core A-3, pushing the female valve core A-3 back and separating it from the inner base of the female valve body A-1, thus enabling the conveying system to operate. When the valve core of the male valve group B closes, the push rod B-5 retracts, and the female valve core A-1, under the action of the female spring A-4, contacts and presses against the inner base of the female valve body A-1, putting the female valve group A in the closed state and achieving disengagement of the automatic sealing function.

[0038] Furthermore, in one embodiment, combined with Figure 3 The switching device D includes a swing cylinder D-1, a rotating shaft D-2, a valve core crank D-3, and a push rod crank D-4. The swing cylinder D-1 is mounted on the outer housing of the male valve body B-1. The rotating shaft D-2 is connected to the extension shaft of the swing cylinder D-1. One end of the valve core crank D-3 is movably connected to the rotating shaft D-2, and the other end is movably connected to the male valve core B-3. One end of the push rod crank D-4 is movably connected to the rotating shaft D-2, and the other end is movably connected to the push rod B-5.

[0039] When the female valve group A and the male valve group B are connected or separated, the swing cylinder D-1 rotates counterclockwise or clockwise, and through the rotation of the shaft D-2, drives the valve core crank D-3 to move the male valve core B-3 to the right or left to separate from or press against the inner base of the male valve body B-1. At the same time, through the rotation of the shaft D-2, the push rod crank D-4 drives the push rod B-5 to extend to the left and act on the female valve core A-3 of the female valve group A, causing the female valve core A-3 to move to the left and separate from the inner base of the female valve body A-1, or driving the push rod crank D-4 to retract the push rod B-5 to the right. Under the spring force of the female spring A-4, the female valve core A-3 moves to the right and presses against the inner base of the female valve body A-1, thereby realizing the simultaneous closure and sealing of the internal channels of the two valve groups, and enabling the separation condition.

[0040] Furthermore, in one embodiment, combined with Figure 4 The connecting device C includes a bracket C-1, a clamping rod C-2, a clamping spring assembly C-3, a rocker arm C-4, a hydraulic cylinder C-5, and a guide rod C-6;

[0041] Both ends of the bracket C-1 are fixedly connected to the outer shell of the male valve body B-1, and one end of the bracket C-1 is connected to the guide rod C-6. Both ends of the hydraulic cylinder C-5 are respectively fixedly connected to the bracket C-1. One end of the rocker arm C-4 is movably connected to the other end of the bracket C-1, and this connection point is marked as point 01. At the same time, one end of the rocker arm C-4 is connected to the cylinder rod of the hydraulic cylinder C-5. The other end of the rocker arm C-4 is connected to one end of the clamping rod C-2 through the clamping spring assembly C-3, and both ends of the clamping spring assembly C-3 are movably connected. The other end of the clamping rod C-2 is movably connected to one end of the bracket C-1, and this connection point is marked as point 0.

[0042] When the female valve group A and the male valve group B are connected, under the guidance of the guide rod C-6, when the flange faces of the male valve group B and the female valve group A are close to contact, the external control signal drives the cylinder rod of the oil cylinder C-5 to extend, pushing the rocker arm C-4 to rotate around point O1 on the bracket C-1, and through the clamping spring assembly C-3, pushing the clamping rod C-2 to rotate around point O on the bracket C-1, so that the clamping rod C-2 quickly clamps the flange face of the female valve group A, thereby realizing the rapid connection between the female valve group A and the male valve group B;

[0043] When the conveying process ends or an emergency occurs requiring the separation of the female valve group A and the male valve group B, the cylinder rod of the hydraulic cylinder C-5 is retracted, pushing the rocker arm C-4 to rotate in the opposite direction around point O1 on the bracket C-1. This, along with the pressure spring assembly C-3, pulls the pressure rod C-2 to rotate in the opposite direction around point O on the bracket C-1, so that the pressure rod C-2 can quickly disengage from the flange face of the female valve group A, thereby achieving rapid separation of the female valve group A and the male valve group B.

[0044] Preferably, there are multiple (up to four) connecting devices C, which are evenly distributed and installed on the male valve body B-1.

[0045] Preferably, the movable connection is, but not limited to, a pin connection.

[0046] The working principle of this invention will be explained in detail below.

[0047] The quick-connect and disconnect shut-off device consists of two parts: a female valve group A and a male valve group B. The female valve group A (e.g., ...) Figure 2 The left end of the female valve group A (as shown in Figure 3) is installed on the hose end of one vessel, and the right end of the male valve group B (as shown in Figure 3) is installed on the rigid pipe end of another vessel. When a conveying system needs to be established between the two vessels, the female valve group A, along with the connected hose, is guided to the male valve group B side. Guided by guide rod C-6, the flange face of the male valve group B is brought close to the flange face of the female valve group A. At this time, the cylinder rod of the drive cylinder C-5 extends, thereby pushing the rocker arm C-4 to rotate counterclockwise around point 01 on the bracket C-1, and through the clamping spring assembly C-3, pushing the clamping rod C-2 to rotate clockwise around point 0 on the bracket C-1. At this time, the clamping rod C-2 quickly clamps the flange face of the female valve group A, thereby realizing the rapid connection between the female valve group A and the male valve group B. At this time, the swing cylinder D-1 on the operating switch device D rotates 180 degrees counterclockwise. This rotation, via the rotating shaft D-2, drives the valve core crank D-3 to move the male valve core B-3 to the right, separating it from the inner base of the male valve body B-1. Simultaneously, it drives the push rod crank D-4 to extend the push rod B-5 to the left, acting on the female valve core A-3 of the female valve group A. This causes the female valve core A-3 to move to the left, separating it from the inner base of the female valve body A-1. This allows the internal channels of both valve groups to open simultaneously, thus establishing a conveying system between the two vessels. The diagram showing the connection and disconnection of the quick-connect and disconnection device is as follows. Figure 1 As shown.

[0048] When the conveying process ends or an emergency requires separation of the conveying system, the following operations can be performed: First, drive the swing cylinder D-1 on the switch device D to rotate 180 degrees clockwise. This rotation, via the rotating shaft D-2, drives the valve core crank D-3 to move the male valve core B-3 to the left, pressing it against the inner base of the male valve body B-1 for a seal. Simultaneously, it drives the push rod crank D-4 to retract the push rod B-5 to the right. Under the spring force of the female valve core A-3, the female valve core A-3 moves to the right, pressing against the inner base of the female valve body A-1. The side base is pressed and sealed, thereby simultaneously closing and sealing the internal channels of both valve groups, at which point the conditions for separation are met; then the cylinder rod of the drive cylinder C-5 retracts, pushing the rocker arm C-4 to rotate clockwise around point 01 on the bracket C-1, and through the compression spring assembly C-3, pulling the compression rod C-2 to rotate counterclockwise around point 0 on the bracket C-1. At this time, the compression rod C-2 quickly disengages from the flange face of the female valve group A, thereby achieving rapid separation of the female valve group A and the male valve group B, and fulfilling the self-sealing function requirement before separation.

[0049] It should be noted that for components without special structural limitations, any component that can achieve the corresponding function in the existing technology is acceptable.

[0050] It should also be noted that the above-mentioned settings, installations, connections, and fixations can be made using, but are not limited to, bolts, threads, etc. Any existing fixed or movable connection scheme can be adapted, as long as the corresponding function can be achieved.

[0051] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention without departing from its spirit and scope should be included within the protection scope of the present invention.

Claims

1. A quick connect and disconnect shut-off device, characterized by, The device comprises a female end valve group (A) and a male end valve group (B), the male end valve group (B) is arranged at the right end of the female end valve group (A), the left end of the female end valve group (A) is mounted at one end of a ship hose, and the right end of the male end valve group (B) is mounted at the other end of a ship hard pipe, so as to build a conveying system between the two ships; the male end valve group (B) clamps or loosens the female end valve group (A) through a connecting device (C), so as to realize the connection or separation of the two valve groups; meanwhile, in the clamped state, the male end valve group (B) opens the valve core of the female end valve group (A) through a switch device (D), so as to realize the opening and communication of the internal passages of the two valve groups, at this time, the conveying of the conveying system is started; in the emergency state, the female end valve group (A) and the male end valve group (B) are closed and separated through the connecting device (C) and the switch device (D) of the male end valve group (B), so as to ensure that the conveying system is isolated from the outside before the pipeline is separated, and reliable sealing is realized.

2. The quick connect and disconnect shut-off device of claim 1, wherein, The female end valve group (A) comprises a female end valve body (A-1), a female end guide sleeve (A-2), a female end valve core (A-3) and a female end spring (A-4); the female end valve body (A-1) is a through annular structure, the female end guide sleeve (A-2) is mounted at one end of a through hole of the female end valve body (A-1) and is fixedly connected with an inner side base of the female end valve body (A-1), and the female end guide sleeve (A-2) is coaxially arranged with the female end valve body (A-1); the female end spring (A-4) is arranged in the female end guide sleeve (A-2), one end of the female end spring (A-4) is fixedly connected with the bottom of the female end guide sleeve (A-2), the other end is connected with the female end valve core (A-3), and the female end valve core (A-3) is always in contact with the inner side base of the female end valve body (A-1) under the spring force of the female end spring (A-4), so as to realize the closing of the female end valve group (A).

3. The quick connect and disconnect shut-off device of claim 2, wherein, The male end valve group (B) comprises a male end valve body (B-1), a male end guide sleeve (B-2), a male end valve core (B-3), a male end spring (B-4) and a top rod (B-5); the male end valve body (B-1) is a through annular structure, the male end guide sleeve (B-2) is mounted at one end of a through hole of the male end valve body (B-1) and is fixedly connected with an inner side base of the male end valve body (B-1), and the male end guide sleeve (B-2) is coaxially arranged with the male end valve body (B-1); the male end spring (B-4) is arranged in the male end guide sleeve (B-2), one end of the male end spring (B-4) is fixedly connected with the bottom of the male end guide sleeve (B-2), the other end is connected with the male end valve core (B-3), and the male end valve core (B-3) is always in contact with the inner side base of the male end valve body (B-1) under the spring force of the male end spring (B-4), so as to realize the closing of the female end valve group (B).

4. The quick connect and disconnect shut-off device of claim 3, wherein, The male end valve group (B) further comprises a first driving assembly, which acts on the female end valve group (A) to open it, so as to realize the opening of the internal passages of the two valve groups at the same time and to have the conveying condition.

5. The quick connect and disconnect shut-off device of claim 4, wherein, The first driving assembly acts on the female end valve core (A-3) of the female end valve group (A) and drives the female end valve core (A-3) to move left and separate from the inner side base of the female end valve body (A-1), so as to realize the opening of the internal passages of the two valve groups at the same time and to have the conveying condition.

6. The quick connect and disconnect shut-off device of claim 5, wherein, The first driving assembly includes a top rod (B-5) penetrating through the male valve core (B-3) and capable of moving axially along the male valve core (B-3), which is extended to the left under the action of the switch device (D) and acts on the female valve core (A-3) of the female valve group (A) to realize the left movement of the female valve core (A-3) and the separation of the female valve core (A-3) from the inner bottom of the female valve body (A-1), so as to realize the simultaneous opening of the internal passages of the two valve groups and the delivery condition.

7. The quick connect and disconnect shut-off device of claim 6, wherein, The switch device (D) includes a swing oil cylinder (D-1), a rotating shaft (D-2), a valve core crank (D-3) and a top rod crank (D-4), wherein the swing oil cylinder (D-1) is installed on the outer shell of the male valve body (B-1); the rotating shaft (D-2) is connected to the extension shaft of the swing oil cylinder (D-1); one end of the valve core crank (D-3) is movably connected to the rotating shaft (D-2), and the other end is movably connected to the male valve core (B-3); one end of the top rod crank (D-4) is movably connected to the rotating shaft (D-2), and the other end is movably connected to the top rod (B-5); When the female valve group (A) and the male valve group (B) are connected or separated, the swing oil cylinder (D-1) rotates counterclockwise or clockwise, drives the valve core crank (D-3) to drive the male valve core (B-3) to move right or left through the rotating shaft (D-2) to separate or press the seal of the male valve core (B-3) from the inner bottom of the male valve body (B-1); at the same time, the top rod crank (D-4) drives the top rod (B-5) to extend to the left and act on the female valve core (A-3) of the female valve group (A) through the rotating shaft (D-2), drives the female valve core (A-3) to move left and separate from the inner bottom of the female valve body (A-1), or drives the top rod (B-5) to retract to the right through the top rod crank (D-4), and the female valve core (A-3) moves right under the spring force of the female spring (A-4) to press the seal of the female valve core (A-3) from the inner bottom of the female valve body (A-1), so as to realize the simultaneous closing and sealing of the internal passages of the two valve groups and the separation condition.

8. The quick connect and disconnect shut-off device of claim 3, wherein, The connecting device (C) includes a bracket (C-1), a pressing rod (C-2), a pressing spring assembly (C-3), a rocker (C-4), an oil cylinder (C-5) and a guide rod (C-6); The two ends of the bracket (C-1) are fixedly connected to the shell outside the male valve body (B-1), and one end of the bracket (C-1) is connected to the guide rod (C-6); the two ends of the oil cylinder (C-5) are respectively fixedly connected to the bracket (C-1); one end of the rocker (C-4) is movably connected to the other end of the bracket (C-1), and the connection point is marked as point 01; the other end of the rocker (C-4) is connected to the cylinder rod of the oil cylinder (C-5); the other end of the pressing rod (C-2) is movably connected to one end of the bracket (C-1), and the connection point is marked as point 0; When the female valve group (A) and the male valve group (B) are connected, under the guidance of the guide rod (C-6), when the flange surfaces of the male valve group (B) and the female valve group (A) are close to the contact state, the external control signal drives the cylinder rod of the oil cylinder (C-5) to extend, pushes the rocker (C-4) to rotate around the O1 point on the support (C-1), and pushes the pressing rod (C-2) around the O point on the support (C-1) through the pressing spring assembly (C-3), so that the pressing rod (C-2) quickly presses the flange surface of the female valve group (A), thereby realizing the quick connection of the female valve group (A) and the male valve group (B); When the female valve group (A) and the male valve group (B) are separated, the cylinder rod of the oil cylinder (C-5) is driven to retract, the rocker (C-4) is pushed to rotate in the opposite direction around the O1 point on the support (C-1), and the pressing rod (C-2) is pulled in the opposite direction around the O point on the support (C-1) through the pressing spring assembly (C-3), so that the pressing rod (C-2) quickly separates from the flange surface of the female valve group (A), thereby realizing the quick separation of the female valve group (A) and the male valve group (B).

9. The quick connect and disconnect shut-off device of claim 8, wherein, The connecting device (C) is provided in plurality and is uniformly distributed and installed on the male valve body (B-1).

10. The quick connect and disconnect shut-off device of claim 8, wherein, The movable connection adopts pin shaft connection.

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