CN117489895A - Connecting device - Google Patents

Abstract

The application discloses connecting device includes: the first breaking valve comprises a first valve body, the first valve body comprises a first end and a second end which are oppositely arranged, and a first connecting part is arranged on the peripheral surface of the second end in a ring manner; the second breaking valve is coaxially connected with the first breaking valve along the axial direction, the second breaking valve comprises a second valve body, the second valve body comprises a third end and a fourth end which are oppositely arranged, a second connecting part is annularly arranged on the peripheral surface of the third end, and the second end is in butt joint communication with the third end; the first connecting part is detachably connected with the second connecting part by the breakable connecting piece; the pressurizing assembly is arranged between the first connecting part and the second connecting part and is used for applying load to the first connecting part and the second connecting part; the load direction is parallel to the stress direction of the breakable connection, and when the tension threshold of the breakable connection is smaller than the load, the breakable connection releases the connection of the first connection part and the second connection part. The connection of the first valve body and the second valve body can be actively released, and the connecting device is high in controllability.

Description

Connecting device

Technical Field

The present application relates to the field of connecting devices, and in particular, to a connecting device.

Background

The two pipes for transporting the liquid are generally butted by a connecting device. During the liquid transfer, there is a risk that the pipe is accidentally over-pressurized or pulled by an external force, and is thus subjected to a large load. If the connection device cannot be timely released from the connection state when an accident occurs, the pipeline is easily damaged.

In the prior art, the connecting device is provided with the breakable connecting piece to connect two pipelines, the breakable connecting piece can be broken by external force with a certain size, and the breakable connecting piece can be broken in time when the connecting device is accidentally subjected to a large load, so that the connection of the two pipelines is released. However, when an accident happens, the existing connecting device can only wait for the automatic breaking of the breakable connecting piece by uncontrollable external force and then carry out the next treatment, so that the controllability of the connection release of the pipeline is low, and the problem of timely coping with the accident is solved.

Disclosure of Invention

The application provides a connecting device to solve the connecting device who is provided with the breakable connecting piece when receiving great load by accident, the low technical problem of controllability of pipe connection dismantlement.

In order to solve the above technical problem, the present application provides a connection device, including: the first breaking valve comprises a first valve body, the first valve body comprises a first end and a second end which are oppositely arranged, and a first connecting part is arranged on the peripheral surface of the second end in a ring manner; the second breaking valve is coaxially connected with the first breaking valve along the axial direction and comprises a second valve body, the second valve body comprises a third end and a fourth end which are oppositely arranged, a second connecting part is arranged on the peripheral surface of the third end in a surrounding manner, and the second end is in butt joint communication with the third end; the breakable connecting piece detachably connects the first connecting part with the second connecting part; the pressurizing assembly is arranged between the first connecting part and the second connecting part and is used for applying load to the first connecting part and the second connecting part; the stress directions of the first connecting part and the second connecting part are parallel to the stress direction of the breakable connecting part, and when the tensile force threshold of the breakable connecting part is smaller than the load, the breakable connecting part releases the connection of the first connecting part and the second connecting part so as to release the connection of the first valve body and the second valve body.

The pressurizing assembly comprises a pressurizing cavity, wherein the pressurizing cavity is formed by surrounding the first connecting part and the second connecting part, and the pressurizing cavity is used for being connected with the gas assembly.

The first connecting part forms a first groove towards one side of the second connecting part, the second connecting part forms a second groove towards one side of the first connecting part, and the first groove and the second groove are spliced to form a pressurizing cavity; or, a first groove is formed on one side of the first connecting part facing the second connecting part, and a pressurizing cavity is formed by surrounding the first groove and the second connecting part; or, a second groove is formed on one side of the second connecting part facing the first connecting part, and the second groove and the first connecting part are enclosed to form a pressurizing cavity.

Wherein, be provided with first sealing member between the one end that first connecting portion kept away from first valve body and the one end that second connecting portion kept away from the second valve body.

Wherein the end face of the second end and the end face of the third end are provided with second seals.

The first connecting portion comprises a flange and a breaking portion, the flange is arranged on the outer peripheral surface of the second end in a surrounding mode, the breaking portion is detachably connected to the second connecting portion through a breakable connecting piece, the flange is embedded in the breaking portion, and the stress direction between the flange and the breaking portion is parallel to the stress direction of the breakable connecting piece.

The pressurizing assembly is arranged between the breaking part and the second connecting part.

The outer peripheral surface of the flange is provided with a plurality of avoidance grooves, and the breaking part penetrates through the avoidance grooves and rotates around the axial direction relative to the flange so as to enable the breaking part to be in contact with the flange.

The thickness of the flange, which is close to the avoidance groove, in the direction from the first valve body to the second valve body is gradually increased along the rotating direction, and the rotating direction is the direction in which the breaking part rotates around the axial direction of the first valve body.

Wherein the pressurizing assembly is axially disposed around the first valve body.

Wherein, the second end is provided with the mounting groove, and the third end is provided with the installation boss, is provided with the third sealing member between mounting groove and the installation boss, and the installation boss inlays and locates the mounting groove and compresses tightly the third sealing member.

Wherein, first valve body is formed with first cavity, and first valve body still includes first reset assembly and the first closing cap of setting in first cavity, and first reset assembly includes first reset piece and the cover locates the second reset piece outside the first reset piece, and first reset piece and second reset piece all are connected with first closing cap for drive first closing cap lid locates the tip that first cavity is close to the second end.

The first reset component further comprises a sliding shaft, and the first reset piece and the second reset piece are sleeved on the sliding shaft; the first valve body further comprises a first support, the first support is arranged in the first cavity, one end of the sliding shaft penetrates through the first support, the other end of the sliding shaft is connected to the first sealing cover, one ends of the first resetting piece and the second resetting piece are connected to the first sealing cover, and the other ends of the first resetting piece and the second resetting piece are connected to the first support.

Wherein, the peripheral surface of the first sealing cover is embedded with a fourth sealing piece; the first valve body comprises a first pressing plate, and the first pressing plate can be detached from one side surface of the first sealing cover, which faces away from the first reset assembly, and is used for pressing the fourth sealing element.

The beneficial effects of this application are: in distinction from the prior art, the present application provides a connection device that includes a first snap valve, a second snap valve, a breakable connection, and a supercharging assembly. The first snap-off valve includes a first valve body oppositely disposed with a first end and a second end. The second end is provided with a first connecting part in a ring shape on the outer peripheral surface; the second breaking valve is coaxially connected with the first breaking valve along the axial direction. The second snap-off valve comprises a second valve body provided with a third end and a fourth end oppositely. The second connecting part is arranged on the peripheral surface of the third end in a surrounding way. The second end is in butt joint communication with the third end. The breakable connection detachably connects the first connection portion to the second connection portion. The pressurizing assembly is arranged between the first connecting part and the second connecting part. The supercharging assembly is used for applying load to the first connecting portion and the second connecting portion. The stress direction of the first connecting part and the second connecting part is parallel to the stress direction of the breakable connecting part. When the tension threshold of the breakable connection is less than the load, the breakable connection releases the first connection from the second connection. Through the arrangement, when an accident occurs, the pressurizing assembly can actively apply load to the first connecting part and the second connecting part. And the load from the pressurizing assembly on the first connecting part and the second connecting part is continuously transmitted to the breakable connecting part until the load is larger than the tension threshold value, so that the breakable connecting part releases the connection between the first connecting part and the second connecting part. The separation of the first valve body and the second valve body can be actively realized by the pressurizing assembly, uncontrollable external force is not needed, and the controllability is strong.

Drawings

For a clearer description of the technical solutions in the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:

FIG. 1 is a schematic view of a connecting device according to an embodiment of the present application;

FIG. 2 is an enlarged schematic view of A in FIG. 1;

FIG. 3 is a first schematic illustration of a first snap valve according to an embodiment of the present application;

FIG. 4 is a first schematic illustration of a second snap valve in an embodiment of the present application;

FIG. 5 is a second schematic illustration of the first snap valve in an embodiment of the present application;

FIG. 6 is an enlarged schematic view of B in FIG. 3;

FIG. 7 is an enlarged schematic view of C in FIG. 4;

FIG. 8 is a third schematic illustration of a first snap valve according to an embodiment of the present application;

fig. 9 is a second schematic structural view of a second snap valve according to an embodiment of the present application.

Reference numerals: 10. a connecting device;

1. a first snap-off valve; 11. a first valve body; 111. a first end; 112. a second end; 113. a first connection portion; 1131. a first groove; 1132. a flange; 1132a, a avoidance groove; 1133. a breaking part; 1133a, a first break; 1133b, a second snap-off portion; 114. a first cavity; 115. a first reset assembly; 1151. a first reset member; 1152. a second reset member; 1153. a first sliding shaft; 1154. a first bracket; 1154a, a first support arm; 1154b, a second support arm; 1154c, a first via; 1155. a first sleeve; 1155a, a first limiting groove; 116. a first cover; 117. a first platen; 118. a fourth seal; 119. a mounting groove;

2. A second snap-off valve; 21. a second valve body; 211. a third end; 212. a fourth end; 213. a second connecting portion; 2131. a second groove; 214. a second cavity; 215. a second reset assembly; 2151. a third reset member; 2152. a fourth reset member; 2153. a second sliding shaft; 2154. a second bracket; 2154a, third support arm; 2154b, fourth bracket arms; 2154c, second through holes; 2155. a second sleeve; 2155a, second limit groove; 216. a second cover; 2161. a pushing member; 217. a second pressing plate; 218. a fifth seal; 219. a mounting boss;

3. a pressurizing assembly; 31. a pressurizing chamber; 32. a pressurizing hole; 4. a breakable connection; 5. a first seal; 6. a second seal; 7. a third seal; 8. a gas assembly; 20. a first pipe; 30. and a second pipe.

Detailed Description

The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

The connection device provided by the present invention is described in detail below with reference to examples.

Referring to fig. 1 to 3, fig. 1 is a schematic structural diagram of a connection device according to an embodiment of the present application; FIG. 2 is an enlarged schematic view of A in FIG. 1; fig. 3 is a first schematic structural view of a first snap-off valve according to an embodiment of the present application. The present application provides a connecting device 10, the connecting device 10 comprising a first snap valve 1, a second snap valve 2, a breakable connection 4 and a pressurizing assembly 3. The first snap valve 1 comprises a first valve body 11. The first valve body 11 includes oppositely disposed first and second ends 111, 112. The first end 111 is adapted to be connected to the first conduit 20. The second end 112 is provided with a first connecting portion 113 around its outer circumferential surface. The first connecting portion 113 is fixed or integrally formed to the outer circumferential surface of the second end 112. The second snap valve 2 is connected coaxially with the first snap valve 1 in the axial direction X. The axial direction X refers to the axial direction of the first valve body 11. The coaxial connection means that when the first snap valve 1 and the second snap valve 2 are connected, the axis of the first valve body 11 coincides with the axis of the second valve body 21. The second snap valve 2 comprises a second valve body 21. The second valve body 21 includes a third end 211 and a fourth end 212 disposed opposite each other. The fourth end 212 is adapted to connect to the second conduit 30. The third end 211 is provided with a second connection portion 213 around its outer circumferential surface. The second connection portion 213 is fixed or integrally formed on the outer peripheral surface of the third end 211. The second end 112 is in abutting communication with the third end 211. The breakable connection 4 detachably connects the first connection portion 113 to the second connection portion 213. The pressurizing assembly 3 is disposed between the first connecting portion 113 and the second connecting portion 213. The pressurizing assembly 3 is used to apply a load to the first and second connection portions 113 and 213.

Wherein, the stress direction of the first connecting part 113 and the second connecting part 213 is parallel to the stress direction of the breakable connecting part 4. When the tension threshold of the breakable connection 4 is greater than the load, the breakable connection 4 maintains the connection of the first connection 113 and the second connection 213. When the tension threshold of the breakable connection 4 is smaller than the load, the breakable connection 4 releases the first connection 113 from the second connection 213 to disconnect the first valve body 11 and the second valve body 21. The magnitude of the tension threshold may be determined according to actual requirements, and is not limited herein.

In particular, the load applied by the pressurizing assembly 3 may be greater than the tension threshold of the breakable connection 4. The forces experienced by the first connection 113 and the second connection 213 may all come from the load applied by the pressurizing assembly 3. The connection device 10 is entirely actively separated from the first valve body 11 and the second valve body 21 by the pressurizing assembly 3.

The forces received by the first and second connection portions 113 and 213 may all come from the load applied to the first and second valve bodies 11 and 21 by the external force. The connection device 10 is completely passively separated from the first valve body 11 and the second valve body 21 by an external force.

The forces experienced by the first and second connection portions 113, 213 may also be partly derived from the load exerted by the pressurizing assembly 3 and partly derived from the load exerted by the external force on the first and second valve bodies 11, 21. The connecting device 10 is jointly separated from the first valve body 11 and the second valve body 21 by the pressurizing assembly 3 and an external force.

With the above arrangement, the breakable connection 4 can be released not only by the load applied by the external force from the first valve body 11 and the second valve body 21, but also by the pressurization assembly 3 actively applying the load from the first valve body 11 and the second valve body 21. The user can control the connection state of the first valve body 11 and the second valve body 21 by operating the pressurizing assembly 3 at any time, and the connecting device 10 is controllable.

The manner in which the pressurizing assembly 3 applies the load to the first and second connection portions 113 and 213 may be set according to actual circumstances. In one embodiment, the pressurizing assembly 3 includes two pushrods (not shown). A push rod abuts against the first connecting portion 113 and applies a pushing force to the first connecting portion 113. The other push rod abuts against the second connection portion 213 and applies a pushing force to the second connection portion 213. As another embodiment, the pressurizing assembly 3 comprises two electromagnets (not shown) with identical poles. When the two electromagnets are energized, a magnetic repulsive force is generated, and the magnetic repulsive force acts on the first connection portion 113 and the second connection portion 213 to form a load.

The connection manner of the first connection portion 113 and the second connection portion 213 may be set according to actual situations. In one embodiment, the breakable connection 4 is threaded through both the first connection 113 and the second connection 213. In another embodiment, one end of the breakable connection 4 is clamped to the first connecting portion 113, and the other end of the breakable connection 4 is clamped to the second connecting portion 213.

The breakable connection 4 may be a breaking bolt, a magnet, or the like, and may be configured to release the breaking portion from connection with the second connection portion 213 when the load is greater than the tension threshold. In one embodiment, the breakable connection 4 is a stretch broken bolt. When the load applied to the breaking bolt is greater than the tension threshold, the breaking bolt breaks and the breaking portion is separated from the second connecting portion 213. In another embodiment, the breakable connection 4 is a magnet with two poles opposite to each other. When the load applied between the two magnets is greater than the pull threshold, the two magnets are separated and the breaking portion is separated from the second connecting portion 213.

Referring to fig. 4 to 5, fig. 4 is a first schematic structural diagram of a second snap-off valve according to an embodiment of the present application; fig. 5 is a second schematic structural view of the first snap-off valve according to an embodiment of the present application. Referring to fig. 1-3, in some embodiments, the plenum assembly 3 includes a plenum chamber 31. The first connecting portion 113 and the second connecting portion 213 enclose a pressurizing chamber 31. The plenum chamber 31 is used to connect the gas module 8.

Specifically, the plenum 31 may contain a gas therein. The gas assembly 8 may charge the plenum 31 with gas. The gas pressure of the gas acts on the first connection portion 113 and the second connection portion 213 to form a load. As the gas filled into the pressurizing chamber 31 by the gas module 8 increases, the gas pressure in the pressurizing chamber 31 gradually increases, and the load applied to the first connecting portion 113 and the second connecting portion 213 also gradually increases. When the load is greater than the tension threshold of the breakable connection 4, the first connection 113 is disconnected from the second connection 213. The pressurizing chamber 31 is connected to the outside environment after the first connecting portion 113 and the second connecting portion 213 are disconnected, and the air pressure in the pressurizing chamber 31 is restored to the atmospheric pressure.

Through the arrangement, only the gas assembly 8 is controlled to charge the gas into the pressurizing cavity 31, so that the gas pressure in the pressurizing cavity 31 can be controlled, the load born by the first connecting part 113 and the second connecting part 213 is further controlled, the load control of the pressurizing assembly 3 is convenient, and the controllability of the connecting assembly is strong.

Further, the pressurizing assembly 3 may include a pressurizing hole 32. The pressurizing hole 32 penetrates the first connecting portion 113 and/or the second connecting portion 213. The pressurizing hole 32 communicates with the pressurizing chamber 31. The gas module 8 communicates with the pressurizing aperture 32. The gas module 8 charges the pressurizing chamber 31 with gas through the pressurizing hole 32. By providing the pressurizing hole 32, the gas assembly 8 and the pressurizing cavity 31 are convenient to install.

In some embodiments, the length of the plenum 31 is greater than half the length of the second connection 213 along a direction perpendicular to the outer peripheral surface of the second end 112. Thereby, a larger pressure can be provided in the pressurizing chamber 31, and the breakable connection 4 can be separated from the connection of the first connection portion 113 and the second connection portion 213 more stably.

With continued reference to fig. 1 to 5, in some embodiments, a side of the first connecting portion 113 facing the second connecting portion 213 is formed with a first groove 1131. The second connecting portion 213 is formed with a second groove 2131 toward one side of the first connecting portion 113. The first groove 1131 and the second groove 2131 are spliced to form the plenum chamber 31. The first grooves 1131 and the second grooves 2131 may be the same shape and size. The first grooves 1131 and the second grooves 2131 may also be different in shape and size. Alternatively, a side surface of the first connection portion 113 facing the second connection portion 213 is formed with a first groove 1131. A side of the second connection portion 213 facing the first groove 1131 may be a plane. The first groove 1131 and the second connecting portion 213 enclose the pressurizing chamber 31. Alternatively, the second connecting portion 213 is formed with a second groove 2131 toward one side of the first connecting portion 113. A side of the first connection portion 113 facing the second groove 2131 may be a plane. The second recess 2131 and the first connection portion 113 enclose a plenum chamber 31.

Through the above arrangement, when the first connecting portion 113 is connected with the second connecting portion 213, the pressurizing cavity 31 can be simply surrounded by the first groove 1131 and/or the second groove 2131, so that the pressurizing cavity 31 has a simple structure.

Further, when the first groove 1131 is provided, a distance from the first groove 1131 to the first connecting part 113 away from one end of the first valve body 11 is the same as a distance from the first groove 1131 to the outer circumferential surface of the first valve body 11 in the direction X perpendicular to the axial direction of the first valve body 11. I.e., the first groove 1131 is provided at a central position of the first connecting portion 113 in a direction perpendicular to the axial direction X of the first valve body 11. When the second groove 2131 is provided, a distance from the second groove 2131 to an end of the second connecting portion 213 away from the second valve body 21 in a direction X perpendicular to the axial direction of the second valve body 21 is the same as a distance from the second groove 2131 to the outer circumferential surface of the second valve body 21. Namely, the second groove 2131 is provided at a central position of the second connecting portion 213 in a direction perpendicular to the axial direction X of the second valve body 21.

Through the above arrangement, the load applied by the pressurizing cavity 31 to the first connecting portion 113 and the second connecting portion 213 can be located at the center of the first connecting portion 113 and the second connecting portion 213, and the stress of the first connecting portion 113 and the second connecting portion 213 is more uniform.

With continued reference to fig. 1-5, in some embodiments, a first seal 5 is disposed between an end of the first connection portion 113 remote from the first valve body 11 and an end of the second connection portion 213 remote from the second valve body 21. The first seal 5 is located on the side of the plenum chamber 31 remote from the first valve body 11.

The first seal 5 may be a rubber seal, an elastomeric gasket, or the like.

With the above arrangement, when the first connecting portion 113 and the second connecting portion 213 enclose to form the pressurizing chamber 31, the first seal 5 can seal the gap between the end of the first connecting portion 113 away from the first valve body 11 and the end of the second connecting portion 213 away from the second valve body 21. The gas in the pressurizing cavity 31 is not easy to leak, the air pressure in the pressurizing cavity 31 can be stably increased, and the connecting device 10 is good in stability.

In some embodiments, the end face of the second end 112 and the end face of the third end 211 are provided with the second seal 6. The second seal 6 is located on the side of the plenum chamber 31 adjacent the first valve body 11. The second seal 6 may be a rubber gasket, an elastomeric gasket, or the like.

With the above arrangement, when the first valve body 11 is connected to the second valve body 21, the second seal 6 can seal the gap between the end face of the second end 112 and the end face of the third end 211. The gas in the pressurizing chamber 31 is less likely to leak from the gap between the end face of the second end 112 and the end face of the third end 211. The air pressure in the pressurizing chamber 31 can be stably increased. At the same time, the fluid in the first cavity 114 and/or the second cavity 214 is not easy to leak from the gap between the end surface of the second end 112 and the end surface of the third end 211, so that the stability of the connection device 10 is better.

With continued reference to fig. 1-5, in some embodiments, the first connection portion 113 includes a flange 1132 and a snap-apart portion 1133. A flange 1132 is disposed around the outer peripheral surface of the second end 112. The flange 1132 is fixed or integrally formed to the outer peripheral surface of the second end 112. The breaking portion 1133 is detachably connected to the second connecting portion 213 through the breakable connecting piece 4. The flange 1132 is embedded in the breaking portion 1133.

Wherein the stress direction between the flange 1132 and the breaking part 1133 is parallel to the stress direction of the breakable connection 4. At a load to which the breakable connection 4 is subjected less than the tensile threshold, the breakable connection 4 maintains the connection of the snap-apart portion 1133 with the second connection 213. When the load received by the breakable connection 4 is greater than the pull threshold, the breakable connection 4 releases the snap-apart portion 1133 from the second connection portion 213 to disconnect the first connection portion 113 and the second connection portion 213.

Through the above arrangement, since the flange 1132 is embedded in the breaking portion 1133, the first breaking valve 1 and the second breaking valve 2 do not need to operate the breakable connection 4 when being normally assembled and disassembled, and only the flange 1132 is embedded or released from being embedded in the breaking portion 1133, so that the assembly and disassembly can be completed, and the assembly and disassembly efficiency is high. Meanwhile, when the connection device 10 receives a larger external force due to an unexpected situation, the pressurizing assembly 3 can actively apply a load to release the connection between the breaking portion 1133 and the second connection portion 213, which is more stable in acting direction and magnitude, than when the external force is not controlled in waiting for the magnitude and direction. The probability of the structure of the connection device 10 being damaged by uncontrolled external forces is reduced.

The connection manner of the stretch breaking portion 1133 and the second connecting portion 213 may be set according to actual situations. In one embodiment, the breakable connection 4 is co-threaded and is threadably coupled to the stretch breaking portion 1133 and the second connection 213. In another embodiment, one end of the breakable connection 4 is clamped to the breaking portion 1133, and the other end of the breakable connection 4 is clamped to the second connecting portion 213.

In some embodiments, the plenum assembly 3 is disposed between the snap-apart portion 1133 and the second connection portion 213. By the above arrangement, the distance from the load applied by the pressurizing assembly 3 to the breakable connection 4 is shorter, and the load can more sufficiently act on the extending direction of the breakable connection 4. Thus, the pressurizing assembly 3 does not need to apply a load far greater than the tensile threshold value because of being far away from the breakable connection 4, and is convenient to use.

In addition, compared to the pressurizing assembly 3 being disposed between the end face of the second end 112 and the end face of the third end 211, the load applied by the pressurizing assembly 3 does not create a large rotational moment on the first and second connection portions 113, 213 due to being spaced too far from the breakable connection 4. The stress direction of the first connecting portion 113 and the second connecting portion 213 is substantially parallel to the axial direction of the first valve body 11 and the second valve body 21. The first connecting portion 113 and the second connecting portion 213 are not easy to bend and deform, so that the sealing performance between the second end 112 and the third end 211 is reduced.

With continued reference to fig. 1-5, in some embodiments, the flange 1132 is formed with a plurality of relief grooves 1132a on an outer peripheral surface thereof. A plurality of relief grooves 1132a may be spaced around the outer peripheral surface of the flange 1132. The breaking portion 1133 penetrates the escape groove 1132a and rotates around the axial direction X relative to the flange 1132, so that the breaking portion 1133 abuts against the flange 1132.

Specifically, after the breaking portion 1133 is inserted into the relief groove 1132a, the breaking portion 1133 may rotate relative to the flange 1132 about the axial direction X. After the breaking portion 1133 rotates around the axial direction X by a certain angle relative to the flange 1132, at least part of the breaking portion 1133 abuts against a side of the flange 1132 facing away from the second connecting portion 213. The axial direction X refers to the axial direction of the first valve body 11. The angle by which the stretch-breaking portion 1133 rotates about the axial direction X may be 1 degree, 5 degrees, 15 degrees, 30 degrees, 45 degrees, or the like.

Through the arrangement, the connection between the first breaking valve 1 and the second breaking valve 2 can be completed only by penetrating the breaking portion 1133 through the avoiding groove 1132a and rotating a certain angle around the axial direction, and the connecting device 10 is convenient to assemble and disassemble.

The size of the escape groove 1132a may be larger than that of the breaking portion 1133, so that the breaking portion 1133 may pass through more conveniently. The shape and size of the relief groove 1132a may also be matched to the shape and size of the break 1133 to reduce the volume of the slot in the flange 1132, resulting in a higher strength of the flange 1132.

In some embodiments, the outer surface of the flange 1132 is provided with at least two relief grooves 1132a circumferentially spaced apart, and the snap-off portion 1133 includes at least two. The number of the escape grooves 1132a may be two, three, four, or more than four, etc. The stretch breaking portion 1133 includes at least two. The number of the breaking portions 1133 may be two, three, four, or more than four, etc. The number of escape grooves 1132a may be the same as the number of breaking parts 1133. The number of escape grooves 1132a may be greater than the number of breaking parts 1133.

Through the above arrangement, the first snap valve 1 and the second snap valve 2 can be fixed by the plurality of snap parts 1133, and the connection of the connection device 10 is more stable.

The specific number and positions of the breaking portions 1133 and the avoiding grooves 1132a may be set according to practical situations, for example, in a specific embodiment, the number of the avoiding grooves 1132a is four. The number of the breaking portions 1133 is four. Four relief grooves 1132a are provided at 90 degree intervals around the outer peripheral surface of the flange 1132. Four snap-off portions 1133 are circumferentially spaced 90 degrees apart around the second connecting portion 213. The four breaking portions 1133 are in one-to-one correspondence with the positions of the four avoiding grooves 1132 a. In another embodiment, the number of relief slots 1132a is four. The number of the breaking portions 1133 is two. Four relief grooves 1132a are provided at 90 degree intervals around the outer peripheral surface of the flange 1132. Two snap-apart portions 1133 are circumferentially spaced 180 degrees apart around the second connecting portion 213. The positions of the two breaking portions 1133 are in one-to-one correspondence with the positions of the at least two avoiding grooves 1132 a.

With continued reference to fig. 1-5, in some embodiments, the flange 1132 increases in thickness in the direction of rotation of the first valve body 11 toward the second valve body 21 proximate the relief groove 1132 a. The rotation direction is a direction in which the breaking portion 1133 rotates around the axial direction of the first valve body 11.

Specifically, the rotation direction Y is a direction in which the stretch breaking portion 1133 rotates about the axial direction X. For example, the rotation direction Y may be a direction in which the stretch-breaking portion 1133 rotates clockwise about the axial direction X as viewed in the direction of the first valve body 11 toward the second valve body 21. Alternatively, the rotation direction Y may be a direction in which the stretch-breaking portion 1133 rotates counterclockwise about the axial direction X as viewed in the direction of the first valve body 11 toward the second valve body 21.

With the above arrangement, when the breaking portion 1133 rotates around the rotation direction Y, since the thickness of the flange 1132 in the direction of the first valve body 11 toward the second valve body 21 along the rotation direction Y gradually increases, the distance between the breaking portion 1133 and the flange 1132 gradually decreases, that is, the breaking portion 1133 may be gradually locked to the flange 1132 during the rotation around the rotation direction Y. The first breaking valve 1 and the second breaking valve 2 do not need to be provided with additional locking structures, and can be locked only by rotating the breaking part 1133, so that the connecting device 10 is convenient to assemble and disassemble.

With continued reference to fig. 1-5, in some embodiments, the stretch-break portion 1133 includes a first stretch-break portion 1133a and a second stretch-break portion 1133b that is perpendicular to the first stretch-break portion 1133a connection. The first breaking portion 1133a is detachable from the second connecting portion 213 through the breakable connection 4. The second breaking portion 1133b abuts against a side surface of the flange 1132 facing away from the second connecting portion 213.

With the above arrangement, since the second breaking portion 1133b abuts against a side surface of the flange 1132 facing away from the second connecting portion 213, the load on the flange 1132 can be sufficiently transferred to the second breaking portion 1133b and then to the breakable connection 4 connected to the first breaking portion 1133 a. The load between the first valve body 11 and the second valve body 21 can sufficiently act on the breakable connection 4 so that the breakable connection 4 can timely release the connection of the breaking portion 1133 and the second connection portion 213, and the connection device 10 is not easily damaged.

The connection manner of the first breaking portion 1133a and the second connecting portion 213 may be set according to actual situations. In one embodiment, the breakable connection 4 is threaded through the first breaking portion 1133a and the second connecting portion 213. In another embodiment, one end of the breakable connection 4 is clamped to the first breaking portion 1133a, and the other end of the breakable connection 4 is clamped to the second connecting portion 213.

The first breaking portion 1133a may be vertically connected to the second breaking portion 1133b by welding, bonding, or the like. The first breaking portion 1133a and the second breaking portion 1133b may be integrally formed.

In some embodiments, the breakable connection 4 extends in the same direction as the first valve body 11 or the second valve body 21 extends axially. The abutment surface between the second snap-off portion 1133b and the flange 1132 is in a direction perpendicular to the axial extension direction of the first valve body 11 or the second valve body 21.

With the above arrangement, when a load parallel to the axial direction X is applied between the first valve body 11 and the second valve body 21, since the abutment surface between the second snap portion 1133b and the flange 1132 is perpendicular to the axial extending direction of the first valve body 11 or the second valve body 21, the load direction is perpendicular to the abutment surface, and the load can be more sufficiently transmitted between the second snap portion 1133b and the flange 1132. Meanwhile, since the load direction is parallel to the extending direction of the breakable connection 4, the load can fully act on the breakable connection 4, and the breakable connection 4 can timely release the connection between the breaking portion 1133 and the second connection portion 213, so that the connection device 10 is not easily damaged.

With continued reference to fig. 1-5, in some embodiments, the plenum assembly 3 is disposed axially about the first valve body 11. In the above manner, when the pressurizing assembly 3 applies a load to the first connecting portion 113 and the second connecting portion 213, the load can be distributed on the first connecting portion 113 and the second connecting portion 213 around the first valve body 11 in the axial direction. The first connecting portion 113 and the second connecting portion 213 are more uniformly stressed, so that the load can be more fully transferred to the breakable connection 4, and the first valve body 11 is more stably separated from the second valve body 21.

The distribution of the pressurizing assembly 3 can be determined according to practical situations. In one embodiment, the pressurizing assembly 3 is disposed axially continuously around the first valve body 11. For example, the pressurizing assembly 3 is arranged axially continuously around the first valve body 11. As another embodiment, the pressurizing assemblies 3 are axially spaced around the first valve body 11. For example, the number of the pressurizing assemblies 3 is a plurality, and the plurality of pressurizing assemblies 3 are axially spaced around the first valve body 11.

In some embodiments, the second end 112 is provided with a mounting slot 119. The third end 211 is provided with a mounting boss 219. A third seal 7 is provided between the mounting groove 119 and the mounting boss 219. The mounting boss 219 may be shaped and sized to match the shape and size of the mounting slot 119. The mounting boss 219 is fitted into the mounting groove 119 and presses the third seal 7.

With the above arrangement, when the first valve body 11 and the second valve body 21 are subjected to load in the radial direction, the first valve body 11 and the second valve body 21 cannot move in the radial direction, and the breakable connection 4 cannot be subjected to load in the radial direction, because the mounting boss 219 is embedded in the mounting groove 119 to form a limit. The first valve body 11 and the second valve body 21 are not accidentally disconnected when they are subjected to a load in the radial direction. At the same time, the third seal 7 may seal the gap between the mounting groove 119 and the mounting boss 219, and the fluid within the first cavity 114 and/or the second cavity 214 may not leak easily, and the connection device 10 may seal well.

Referring to fig. 6 to 7, fig. 6 is an enlarged schematic view of B in fig. 3; fig. 7 is an enlarged schematic view of C in fig. 4. Referring to fig. 1-5, in some embodiments, the first valve body 11 is formed with a first cavity 114. The first chamber 114 may be used to contain a fluid. When the first end 111 of the first valve body 11 is connected to the first conduit 20, the first chamber 114 communicates with the first conduit 20. The first valve body 11 further includes a first reset assembly 115 disposed within the first cavity 114 and a first cover 116. The first reset assembly 115 includes a first reset element 1151 and a second reset element 1152 that is disposed about the first reset element 1151. The first return member 1151 and the second return member 1152 each have elasticity. The first reset element 1151 and the second reset element 1152 may be coaxially disposed. The first reset element 1151 and the second reset element 1152 are connected to the first cover 116, and are used for driving the first cover 116 to cover an end of the first cavity 114 near the second end 112.

Through the above arrangement, when the first valve body 11 is separated from the second valve body 21, the first reset member 1151 and the second reset member 1152 of the double-layer arrangement can rapidly drive the first cover 116 to cover the end portion of the first cavity 114 near the second end 112, so as to timely close the first cavity 114. The fluid in the first chamber 114 is not easily leaked and the connecting device 10 has good sealing performance.

In one embodiment, the second valve body 21 is formed with a second cavity 214. The second cavity 214 may be used to contain a fluid. When the fourth end 212 of the second valve body 21 is connected to the second conduit 30, the second cavity 214 communicates with the second conduit 30. The second valve body 21 further includes a second reset assembly 215 disposed within the second cavity 214 and a second cover 216. The second reset assembly 215 includes a third reset element 2151 and a fourth reset element 2152 that is disposed about the third reset element 2151. The third return member 2151 and the fourth return member 2152 may be coaxially disposed. The third return member 2151 and the fourth return member 2152 each have elasticity. The third reset element 2151 and the fourth reset element 2152 are connected to the second cover 216, and are used for driving the second cover 216 to cover an end portion of the second cavity 214 near the third end 211.

Through the above arrangement, when the second valve body 21 is separated from the first valve body 11, the third reset member 2151 and the fourth reset member 2152 that are arranged in two layers can rapidly drive the second cover 216 to cover the end portion of the second cavity 214 near the third end 211, so as to timely close the second cavity 214. The fluid in the second chamber 214 is not easily leaked and the connection device 10 has good sealing performance.

Further, the side of the second cover 216 facing the first valve body 11 is provided with a pushing member 2161. When the first valve body 11 is connected to the second valve body 21, the pushing member 2161 drives the end of the first cover 116, which is far from the first cavity 114 and near the second end 112, to release the cover, and drives the end of the second cover 216, which is far from the second cavity 214 and near the third end 211, to release the cover. Fluid may flow between the first valve body 11 and the second valve body 21. When the first valve body 11 is disconnected from the second valve body 21, the first reset assembly 115 drives the first cover 116 to cover the end of the first cavity 114 near the second end 112. The second reset assembly 215 drives the second cover 216 to cover the end portion of the second cavity 214 near the third end 211.

Referring to fig. 8 to 9, fig. 8 is a schematic diagram illustrating a third structure of the first snap-off valve according to an embodiment of the present application; fig. 9 is a second schematic structural view of a second snap valve according to an embodiment of the present application. Referring to fig. 1-7, in some embodiments, the first reset assembly 115 further comprises a sliding shaft. The first sliding shaft 1153 extends along the first valve body 11 toward the second valve body 21. The first reset element 1151 and the second reset element 1152 are both sleeved on the sliding shaft. The first valve body 11 further includes a first bracket 1154. The first bracket 1154 is disposed in the first chamber 114. One end of the sliding shaft is disposed through the first bracket 1154. The other end of the sliding shaft is connected to the first cover 116, and one ends of the first reset member 1151 and the second reset member 1152 are connected to the first cover 116. The other ends of the first reset element 1151 and the second reset element 1152 are connected to a first bracket 1154.

With the above arrangement, the first sliding shaft 1153 can guide the movement of the first cover 116, and the first cover 116 is more stable when being arranged at the end of the first cavity 114 near the second end 112, thereby increasing the sealing stability of the connecting device 10. Meanwhile, the first reset assembly 115 is disposed in the first cavity 114 through the first bracket 1154, and is stably installed.

In one embodiment, the first bracket 1154 includes a first bracket arm 1154a and a second bracket arm 1154b that intersect, i.e., the first bracket 1154 approximates a cross shape. Both ends of the first holder arm 1154a are fixed in the first chamber 114. The second bracket arm 1154b is secured at both ends within the first chamber 114. A first throughbore 1154c is formed at the intersection of the first bracket arm 1154a and the second bracket arm 1154 b. A first bushing 1155 is disposed in the first throughbore 1154c. The first sliding shaft 1153 is disposed through the first shaft sleeve 1155. A side surface of the first shaft sleeve 1155 facing the second valve body 21 is provided with a first stopper groove 1155a. The first reset element 1151 and/or the second reset element 1152 are disposed in the first limiting groove 1155a.

The first sliding shaft 1153 may be connected to the first cover 116 by welding, pinning, clamping, or the like. In one embodiment, the first sliding shaft 1153 is coupled to the first cover 116 by a spring pin. In another embodiment, the first sliding shaft 1153 is welded to the first cover 116.

In one embodiment, the second reset assembly 215 further includes a second sliding shaft 2153. The second sliding shaft 2153 extends along the first valve body 11 toward the second valve body 21. The third reset element 2151 and the fourth reset element 2152 are all sleeved on the second sliding shaft 2153. The first valve body 11 further includes a second bracket 2154. The second support 2154 is disposed in the second cavity 214. One end of the second sliding shaft 2153 is disposed through the second bracket 2154. The other end of the second sliding shaft 2153 is connected to the second cover 216. One ends of the third and fourth return members 2151, 2152 are connected to the second cover 216. The other ends of the third return member 2151 and the fourth return member 2152 are coupled to the second bracket 2154.

By the above arrangement, the second sliding shaft 2153 can guide the movement of the second cover 216, and the second cover 216 is more stable when the second cover 216 is disposed on the end portion of the second cavity 214 near the third end 211, thereby increasing the sealing stability of the connecting device 10. Meanwhile, the second reset assembly 215 is disposed in the second cavity 214 through the second bracket 2154, and is stably installed.

The shape of the second holder 2154 may be set according to actual conditions. In one embodiment, the second support 2154 includes a third support arm 2154a and a fourth support arm 2154b that intersect, i.e., the second support 2154 approximates a cross. Both ends of the third holder arm 2154a are secured within the second cavity 214. The fourth holder arm 2154b is secured within the second cavity 214 at both ends. A second through hole 2154c is formed at the intersection of the third support arm 2154a and the fourth support arm 2154 b. A second sleeve 2155 is disposed in the second through hole 2154c. The second sliding shaft 2153 is disposed through the second sleeve 2155. A side of the second sleeve 2155 facing the second valve body 21 is provided with a second limit groove 2155a. The third reset element 2151 and/or the fourth reset element 2152 are disposed within the second limiter recess 2155a.

The second sliding shaft 2153 may be connected to the second cover 216 by welding, pin connection, snap connection, or the like. In one embodiment, the second sliding shaft 2153 is coupled to the second cover 216 via a spring pin. In another embodiment, the second sliding shaft 2153 is welded to the second cover 216.

With continued reference to fig. 1-9, in some embodiments, the fourth seal 118 is embedded in the peripheral surface of the first cover 116. The fourth seal 118 may be a rubber gasket, elastomeric gasket, or the like. The first valve body 11 includes a first pressing plate 117, and the first pressing plate 117 is detachable from a side surface of the first cover 116 facing away from the first reset assembly 115, for pressing the fourth sealing member 118.

With the above arrangement, when the first cover 116 covers the end of the first cavity 114 near the second end 112, the fourth seal 118 can form a good seal with the gap between the first cover 116 and the end of the first cavity 114 near the second end 112. The fluid within the first chamber 114 is less prone to leakage and better sealing performance of the connection device 10. Meanwhile, the fourth sealing element 118 can be pressed on the outer circumferential surface of the first sealing cover 116 only by installing the first pressing plate 117, and the fourth sealing element 118 is convenient to assemble and disassemble.

The connection between the first pressing plate 117 and the first cover 116 may be a clamping connection, a threaded connection, or the like. In one embodiment, the first pressing plate 117 is connected to a side of the first cover 116 facing away from the first restoring assembly 115 through bolts. In another embodiment, the first pressing plate 117 is connected to a side of the first cover 116 facing away from the first reset assembly 115 through a clamping connection.

Further, when the first pressing plate 117 is mounted on a side surface of the first cover 116 facing away from the first reset assembly 115, a side surface of the first pressing plate 117 facing away from the first reset assembly 115 is flush with a side surface of the first cover 116 facing away from the first reset assembly 115.

In some embodiments, the second cover 216 is embedded with a fifth seal 218 on an outer peripheral surface. The fifth seal 218 may be a rubber gasket, elastomeric gasket, or the like. The second valve body 21 includes a second pressure plate 217. The second pressing plate 217 is detachable from a side of the second cover 216 facing away from the second reset assembly 215, for pressing the fifth sealing member 218.

With the above arrangement, when the second cover 216 covers the end of the second cavity 214 near the third end 211, the fifth sealing member 218 can form a good seal with the gap between the second cover 216 and the end of the second cavity 214 near the third end 211. The fluid within the second chamber 214 is less prone to leakage and better seals the connection device 10. Meanwhile, only the second pressing plate 217 is required to be installed, the fifth sealing element 218 can be pressed on the outer peripheral surface of the second sealing cover 216, and the fifth sealing element 218 is convenient to assemble and disassemble.

The second pressure plate 217 and the second cover 216 may be connected by a clamping connection, a threaded connection, or the like. In one embodiment, the second pressing plate 217 is connected to a side of the second cover 216 facing away from the second restoring assembly 215 through bolts. In another embodiment, the second pressing plate 217 is connected to a side of the second cover 216 facing away from the second reset assembly 215 through a clamping connection.

Further, when the second pressing plate 217 is mounted on a side of the second cover 216 facing away from the second reset assembly 215, a side of the second pressing plate 217 facing away from the second reset assembly 215 is flush with a side of the second cover 216 facing away from the second reset assembly 215.

In some embodiments, the diameter of the first valve body 11 and/or the second valve body 21 is greater than or equal to 60mm.

For ease of understanding, the following exemplifies an optimal assembly and disassembly process of the first valve body 11 and the second valve body 21.

The optimal connection process of the first valve body 11 and the second valve body 21 is as follows:

as shown in fig. 1 to 9, (1) the first pipe 20 is connected to the first end 111 of the first valve body 11 by bolts or the like. The second pipe 30 is connected to the fourth end 212 of the second valve body 21 by bolts or the like. The breaking portion 1133 is detachably connected to the second connecting portion 213 by the breakable connection 4.

(2) The first valve body 11 is aligned with the second valve body 21 in the axial direction X, and the flange 1132 is aligned and brought close to the second connecting portion 213. The snap-off portion 1133 is aligned with the relief groove 1132a on the flange 1132 and the snap-off portion 1133 is pushed through the relief groove 1132a.

(3) The stretch breaking portion 1133 is rotated in the rotation direction Y. The flange 1132 is gradually embedded in the breaking portion 1133 along with the rotation movement of the breaking portion 1133. Since the thickness of the flange 1132 in the direction of the first valve body 11 toward the second valve body 21 along the rotation direction Y is gradually increased at the position where the flange 1132 approaches the escape groove 1132a, the abutment force between the breaking part 1133 and the flange 1132 is also gradually increased along with the rotation movement of the breaking part 1133, and the breaking part 1133 and the flange 1132 are gradually locked.

(4) During the process that the breaking portion 1133 passes through the avoiding groove 1132a, the pushing member 2161 contacts and pushes the first cover 116 to move away from the second cover 216. The first cover 116 no longer covers the end of the first cavity 114 near the second end 112. Fluid may be circulated from the gap between the first cover 116 and the end of the first cavity 114 proximate the second end 112. The first elastic piece and the second elastic piece are compressed to elastically deform, and elastic potential energy is gradually accumulated.

At the same time, the first cover 116 applies a reaction force to the pushing member 2161, and the reaction force is transmitted to the second cover 216, so that the second cover 216 moves away from the first cover 116 at the same time. The second cover 216 no longer covers the end of the second cavity 214 near the third end 211. Fluid may be circulated from the gap between the second cover 216 and the end of the second cavity 214 near the third end 211. Fluid may now flow between the first chamber 114 and the second chamber 214. The third restoring member 2151 and the fourth restoring member 2152 are compressed and elastically deformed, and gradually accumulate elastic potential energy.

The optimal procedure for normal disconnection of the first valve body 11 from the second valve body 21 is as follows:

(1) The snap-apart portion 1133 is rotated in the opposite direction of the rotation direction Y until the snap-apart portion 1133 is realigned with the escape groove 1132 a. The abutment force between the breaking portion 1133 and the flange 1132 gradually decreases with the rotational movement of the breaking portion 1133, and the flange 1132 gradually unlocks from the breaking portion 1133 with the rotational movement of the breaking portion 1133.

(2) After the snap-apart portion 1133 is aligned with the escape groove 1132a, the snap-apart portion 1133 is moved away from the first valve body 11 in the axial direction X, and the snap-apart portion 1133 is passed through the escape groove 1132a.

(3) The second valve body 21 gradually moves away from the first valve body 11 while the breaking portion 1133 passes through the escape groove 1132a. The pusher 2161 no longer pushes the first closure 116. The first reset element 1151 and the second reset element 1152 are no longer compressed. The elastic potential energy of the first reset element 1151 and the second reset element 1152 is gradually converted into elastic force, so as to push the first cover 116 to move away from the first reset element 1151 until the first cover 116 is covered on the end of the first cavity 114 near the second end 112 again. The second seal 6 seals the gap between the first cover 116 and the end of the first cavity 114 near the second end 112. At this time, the end of the first cavity 114 near the second end 112 is closed, and fluid cannot flow in or out.

At the same time, the second cover 216 is no longer subject to reaction forces from the first cover 116. The third return 2151 and the fourth return 2152 are no longer compressed. The elastic potential energy of the third reset element 2151 and the fourth reset element 2152 is gradually converted into elastic force, so as to push the second cover 216 to move towards the direction away from the third reset element 2151, until the second cover 216 is covered on the end of the second cavity 214 near the third end 211 again. The third seal 7 seals the gap between the second cover 216 and the end of the second cavity 214 near the third end 211. At this time, the end of the second body near the third end 211 is closed, and fluid cannot flow in or out. The first valve body 11 is completely separated from the second valve body 21.

The optimal procedure for active emergency disconnection of the first valve body 11 from the second valve body 21 is as follows:

(1) In case of emergency, the gas assembly 8 charges the pressurizing chamber 31 of the pressurizing assembly 3 with gas to pressurize the pressurizing chamber 31. The pressurizing chamber 31 applies a thrust load to the breaking portion 1133 and the second connecting portion 213 by the air pressure, and the load is further transmitted to the breakable connection 4.

(2) When the load is greater than the tension threshold of the breakable connection 4, the breakable connection 4 releases the connection of the snap portion 1133 with the second connection 213. The breaking portion 1133 is separated from the second connecting portion 213, and thus the first connecting portion 113 is separated from the second connecting portion 213, and the second valve body 21 is no longer connected to the first valve body 11. The first valve body 11 moves in a direction away from the second valve body 21 under the action of an external force. The second valve body 21 is also moved in a direction away from the first valve body 11 by an external force.

(3) The second valve body 21 gradually moves away from the first valve body 11. The pusher 2161 no longer pushes the first closure 116. The first reset element 1151 and the second reset element 1152 are no longer compressed. The elastic potential energy of the first reset element 1151 and the second reset element 1152 is gradually converted into elastic force, so as to push the first cover 116 to move away from the first reset element 1151 until the first cover 116 is covered on the end of the first cavity 114 near the second end 112 again. The second seal 6 seals the gap between the first cover 116 and the end of the first cavity 114 near the second end 112. At this time, the end of the first cavity 114 near the second end 112 is closed, and fluid cannot flow in or out.

At the same time, the second cover 216 is no longer subject to reaction forces from the first cover 116. The third return 2151 and the fourth return 2152 are no longer compressed. The elastic potential energy of the third reset element 2151 and the fourth reset element 2152 is gradually converted into elastic force, so as to push the second cover 216 to move towards the direction away from the third reset element 2151, until the second cover 216 is covered on the end of the second cavity 214 near the third end 211 again. The third seal 7 seals the gap between the second cover 216 and the end of the second cavity 214 near the third end 211. At this time, the end of the second body near the third end 211 is closed, and fluid cannot flow in or out. The first valve body 11 is completely separated from the second valve body 21.

Because first valve body 11 and second valve body 21 easy dismounting, can be when receiving great load and release the connection by oneself, and first cavity 114 and second cavity 214 can in time seal when releasing the connection be difficult for revealing the fluid, this application connecting device 10 is particularly useful for connecting the pipeline of boats and ships transportation liquid or gaseous hazardous materials.

Compared with the prior art, the connecting device of the embodiment comprises a first breaking valve, a second breaking valve, a breakable connecting piece and a pressurizing assembly. The first snap-off valve includes a first valve body oppositely disposed with a first end and a second end. The second end is provided with a first connecting part in a ring shape on the outer peripheral surface; the second breaking valve is coaxially connected with the first breaking valve along the axial direction. The second snap-off valve comprises a second valve body provided with a third end and a fourth end oppositely. The second connecting part is arranged on the peripheral surface of the third end in a surrounding way. The second end is in butt joint communication with the third end. The breakable connection detachably connects the first connection portion to the second connection portion. The pressurizing assembly is arranged between the first connecting part and the second connecting part. The supercharging assembly is used for applying load to the first connecting portion and the second connecting portion. The stress direction of the first connecting part and the second connecting part is parallel to the stress direction of the breakable connecting part. When the tension threshold of the breakable connection is less than the load, the breakable connection releases the first connection from the second connection. Through the arrangement, when an accident occurs, the pressurizing assembly can actively apply load to the first connecting part and the second connecting part. And the load from the pressurizing assembly on the first connecting part and the second connecting part is continuously transmitted to the breakable connecting part until the load is larger than the tension threshold value, so that the breakable connecting part releases the connection between the first connecting part and the second connecting part. The separation of the first valve body and the second valve body can be actively realized by the pressurizing assembly, uncontrollable external force is not needed, and the controllability is strong.

The terms "first," "second," "third," and the like in this application are used for descriptive purposes only and are not to be construed as indicating the number of features indicated. Thus, a feature defining "a first", "a second", and "a third" may explicitly or implicitly include at least one such feature. All directional indications (such as up, down, left, right, front, back … …) in the embodiments of the present application are merely used to explain the relative positional relationship, movement, etc. between the components in a particular gesture (as shown in the drawings), and if the particular gesture changes, the directional indication changes accordingly. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. A process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed but may alternatively include other steps or elements not listed or inherent to such process, method, article, or apparatus.

The foregoing description is only exemplary embodiments of the present application and is not intended to limit the scope of the present application, and all equivalent structures or equivalent processes using the descriptions and the drawings of the present application, or direct or indirect application in other related technical fields are included in the scope of the present application.

Claims (14)

1. A connection device, comprising:

the first snap-off valve comprises a first valve body, wherein the first valve body comprises a first end and a second end which are oppositely arranged, and a first connecting part is annularly arranged on the outer peripheral surface of the second end;

the second breaking valve is coaxially connected with the first breaking valve along the axial direction and comprises a second valve body, the second valve body comprises a third end and a fourth end which are oppositely arranged, a second connecting part is annularly arranged on the peripheral surface of the third end, and the second end is in butt joint communication with the third end;

a breakable connection detachably connecting the first connection portion to the second connection portion;

the pressurizing assembly is arranged between the first connecting part and the second connecting part and is used for applying load to the first connecting part and the second connecting part;

the stress directions of the first connecting part and the second connecting part are parallel to the stress direction of the breakable connecting part, and when the tensile force threshold of the breakable connecting part is smaller than the load, the breakable connecting part releases the connection of the first connecting part and the second connecting part so as to release the connection of the first valve body and the second valve body.

2. The connection device of claim 1, wherein the plenum assembly comprises a plenum chamber defined by the first and second connection portions, the plenum chamber being configured to connect to a gas assembly.

3. The connection device according to claim 2, wherein a side of the first connection portion facing the second connection portion is formed with a first groove, a side of the second connection portion facing the first connection portion is formed with a second groove, and the first groove and the second groove are spliced to form the pressurizing chamber;

or a first groove is formed on one side of the first connecting part facing the second connecting part, and the first groove and the second connecting part are enclosed to form the pressurizing cavity;

or a second groove is formed on one side of the second connecting part facing the first connecting part, and the second groove and the first connecting part are enclosed to form the pressurizing cavity.

4. The connection device of claim 2, wherein a first seal is provided between an end of the first connection portion remote from the first valve body and an end of the second connection portion remote from the second valve body.

5. The connection device according to claim 2, wherein the end face of the second end and the end face of the third end are provided with a second seal.

6. The connecting device according to claim 1, wherein the first connecting portion includes a flange and a breaking portion, the flange is disposed around the outer peripheral surface of the second end, the breaking portion is detachably connected to the second connecting portion through the breakable connecting member, the flange is embedded in the breaking portion, and a force direction between the flange and the breaking portion is parallel to a force direction of the breakable connecting member.

7. The connection device of claim 6, wherein the supercharging assembly is disposed between the break-away portion and the second connection portion.

8. The connection device according to claim 6, wherein the flange outer peripheral surface is formed with a plurality of escape grooves, and the breaking portion is provided through the escape grooves and rotates around the axial direction with respect to the flange so as to abut the breaking portion with the flange.

9. The connection device according to claim 8, wherein a thickness of the flange in a direction of the first valve body toward the second valve body in a rotation direction in which the snap-apart portion rotates around the first valve body axial direction is gradually increased near the escape groove.

10. The connection device of claim 1, wherein the pressurization assembly is disposed axially around the first valve body.

11. The connection device of claim 1, wherein the second end is provided with a mounting groove, the third end is provided with a mounting boss, a third seal is provided between the mounting groove and the mounting boss, and the mounting boss is embedded in the mounting groove and compresses the third seal.

12. The connecting device according to any one of claims 1 to 11, wherein the first valve body is formed with a first cavity, the first valve body further comprises a first reset assembly and a first cover, the first reset assembly comprises a first reset piece and a second reset piece sleeved outside the first reset piece, the first reset piece and the second reset piece are both connected with the first cover, and the first cover is used for driving the end, close to the second end, of the first cavity.

13. The connection device of claim 12, wherein the first reset assembly further comprises a sliding shaft, and the first reset member and the second reset member are both sleeved on the sliding shaft;

The first valve body further comprises a first support, the first support is arranged in the first cavity, one end of the sliding shaft penetrates through the first support, the other end of the sliding shaft is connected to the first sealing cover, one end of the first resetting piece and one end of the second resetting piece are connected to the first sealing cover, and the other end of the second resetting piece is connected to the first support.

14. The connection device of claim 12, wherein the first cover peripheral surface is embedded with a fourth seal; the first valve body comprises a first pressing plate, and the first pressing plate can be detached from one side surface of the first sealing cover, which faces away from the first reset assembly, and is used for pressing the fourth sealing element.