CN210266062U

CN210266062U - Abruption valve

Info

Publication number: CN210266062U
Application number: CN201920736515.6U
Authority: CN
Inventors: 周学俊; 李华平
Original assignee: Suzhou Sanmige Environmental Protection Technology Co ltd
Current assignee: Suzhou Sanmige Environmental Protection Technology Co ltd
Priority date: 2019-05-22
Filing date: 2019-05-22
Publication date: 2020-04-07
Anticipated expiration: 2029-05-22

Abstract

The application relates to the field of pipeline transmission protection devices, and provides a snapping valve, which comprises: the male end valve body is internally provided with a passage, a spring and a valve core are arranged in the passage, the valve core tends to move towards the direction of blocking the passage under the action of the elastic force of the spring, and an embedded part is formed on the outer surface of the male end valve body; the female valve body is sleeved on the male valve body and props against the valve core to ensure that the passage is smooth, and an accommodating part is formed on the female valve body; the bolt has one part fixed in the relative position via the holding part and the other part embedded into the embedding part to fix the axial relative positions of the female valve body and the male valve body. The stretch-break valve of the embodiments of the present application has substantially no attenuation in tensile strength with normal use, and has better durability.

Description

Abruption valve

Technical Field

The application relates to the field of pipeline transmission protection devices, in particular to a snapping valve.

Background

The breaking valve (emergency release device) can prevent leakage accidents caused by accidental breakage of pipelines, and is applicable to the fields of ship-to-shore unloading, tank loading and unloading of roads and railways and other fixed and movable fluid storage devices, such as a crane pipe, a fluid conveying arm and a connection between a transport carrier.

Emergency release couplings ensure safety in fluid transport to the greatest possible extent in marine and land-based loading risers. By means of a simple and unique design, this system can be safely disconnected in the loading arm in a fully automatic manner without any leakage when the loading arm exceeds the rated amount of the operating system. Its advantages are high safety, and low pressure loss. The breaking mechanism ensures that the equipment can automatically and quickly break away when the emergency break-away occurs; and a 'buffer period' is ensured before separation, so that the phenomenon that separation occurs in conventional operation to influence normal operation is avoided.

The snapping valve, as a break point, should have an accurate snapping setting force, rather than a range of values. A snap-off valve, the more common attribute being the point of attachment. Therefore, an unqualified snap-off valve may have a leakage phenomenon or become a bottleneck of the efficiency of the transmission pipeline.

Take a snap-off valve used by a fuel dispenser in the highway field as an example. A snap-off valve of this type may be installed between the fuel nozzle and the hose. When the oiling gun is forgotten to be taken out after oiling is finished, the snapping valve is automatically disconnected under the action of strong pulling force of the automobile so as to prevent the oiling machine from being pulled down by the automobile and possibly causing safety risks.

The break valves used in prior art fuel dispensers are typically spring-type break valves. However, the spring type snap-off valve is likely to fall off naturally during use, and it is difficult to control the snap-off force within a proper range. In actual use, due to repeated impact of the water hammer phenomenon, the elastic element of the spring type breaking valve creeps, and non-failure falling is easily caused. The breaking force of the spring type breaking valve is greatly related to the friction force, the magnitude of the breaking force relates to the surface smoothness and hardness of parts, and the breaking force is difficult to control in an accurate range in actual production.

SUMMERY OF THE UTILITY MODEL

In order to solve the above-mentioned problems, or at least partially solve the above-mentioned technical problems, in one embodiment of the present application, there is provided a pop-off valve including:

the male end valve body is internally provided with a passage, a spring and a valve core are arranged in the passage, the valve core tends to move towards the direction of blocking the passage under the action of the elastic force of the spring, and an embedded part is formed on the outer surface of the male end valve body;

the female valve body is sleeved on the male valve body and props against the valve core to ensure that the passage is smooth, and an accommodating part is formed on the female valve body;

and one part of the bolt is embedded into the embedding part to determine the relative position of the female valve body and the male valve body in the axial direction.

Compared with the prior art, the tensile capacity of the snapping valve of the embodiment of the application is not attenuated along with the normal use process basically, the non-fault natural falling caused by repeated impact of the water hammer phenomenon on the product is well overcome, and the snapping valve has better durability.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be clear that the drawings in the following description are only intended to illustrate some embodiments of the present application, and that for a person skilled in the art, it is possible to derive from these drawings, without inventive effort, technical features, connections or even method steps not mentioned in the other drawings.

Fig. 1 is an external view schematic diagram of a non-oil gas recovery type snap-off valve according to an embodiment of the present application;

FIG. 2 is a schematic isometric cross-sectional view of a non-vapor recovery type snap-off valve according to an embodiment of the present application in a disassembled state;

FIG. 3 is a schematic isometric cross-sectional view of a non-oil vapor recovery type snap-off valve according to an embodiment of the present application in an assembled state;

FIG. 4 is a schematic cross-sectional view of a non-vapor recovery type snap-off valve of an embodiment of the present application in a disassembled state;

FIG. 5 is an enlarged partial schematic view of FIG. 4 in area A;

FIG. 6 is a further enlarged schematic view of the area of FIG. 5 when the non-vapor recovery type snap-off valve of the present application embodiment is in an assembled state;

fig. 7 is a schematic perspective view of a male-end valve body of a non-oil vapor recovery type snap-off valve according to an embodiment of the present application;

FIG. 8 is a schematic perspective view of a female-end valve body of a non-vapor recovery type snap-off valve according to an embodiment of the present application;

fig. 9 is a schematic isometric sectional view of an oil and gas recovery type snap-off valve according to an embodiment of the present application in a disassembled state.

Description of the reference numerals

1-male end valve body; 11-a via; 12-a spring; 13-a valve core; 14-a chimeric moiety; 15-a first fool-proof slot;

16-a second fool-proof slot; 17-a plastic ring;

2-a female end valve body; 21-a locus of containment; 22-an extrusion; 23-fool-proof edge; 24-a body; 241-an annular groove;

25-a connector; 251-a convex ring; 26-gap;

3, inserting a pin;

and 4-gas path.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application shall fall within the scope of protection of the present application.

Implementation mode one

The present application provides a snap-off valve.

The inventors of the present application have found that in the prior art spring-type stretch-break valves are used, which typically achieve a mating connection between the valve bodies of the stretch-break valves by means of an interference fit between two plastic parts with each other. However, in many application scenarios of the prior art, such as the operation of filling a vehicle at a filling station, when the filling is stopped, the change of the oil pressure causes a water hammer phenomenon in the liquid, which tends to generate a large impact force on the valve body of the stretch-break valve. Under the long-term impact accumulation, the impact force of the water hammer phenomenon repeatedly acts on the elastic element for a long time, so that the spring is easy to gradually displace to separate from the spring clamping groove, and the non-accident automatic falling is caused. And once the breakage occurs, the plastic part clamped in the interference fit mode cannot be reused and needs to be replaced, so that the use and maintenance cost of the refueling equipment is improved virtually. In other application scenarios, similar problems may also result for similar reasons.

To solve the above problem, embodiments of the present application provide a snap-off valve.

Referring to fig. 1 to 4, the pop-off valve includes:

a male valve body 1, a passage 11 is formed in the male valve body 1, a spring 12 and a valve core 13 are arranged in the passage 11, the valve core 13 tends to move towards the direction blocking the passage 11 under the action of the elastic force of the spring 12, and a tabling part 14 is formed on the outer surface of the male valve body 1;

the female valve body 2 is sleeved on the male valve body 1 and abuts against the valve core 13 to ensure that the passage 11 is smooth, and the female valve body 2 is provided with an accommodating part 21;

the plug 3, a part of the plug 3 is fixed relative position by the containing part 21, another part is embedded into the embedding part 14, to fix the relative position of the female valve body 2 and the male valve body 1 in the axial direction.

That is, the male-end valve body 1 and the female-end valve body 2 of the stretch break valve according to the embodiment of the present application define the relative positions of the male-end valve body 1 and the female-end valve body 2 in the axial direction by receiving a portion of the plug pin 3, respectively, so that the relative positions in the axial direction are maintained at least under the action of less than a predetermined tensile force between the male-end valve body 1 and the female-end valve body 2. Under the action of more than or equal to the preset tension between the male valve body 1 and the female valve body 2, the plug pin 3 is broken, and the male valve body 1 and the female valve body 2 are separated.

Referring to fig. 2, before the male-end valve body 1 and the female-end valve body 2 are assembled, the valve core 13 is pressed against the inner wall of the passage 11 formed by the male-end valve body 1 by the elastic force of the spring 12.

As shown in fig. 3, when the male-end valve body 1 and the female-end valve body 2 are assembled and pressed by the female-end valve body 2, the valve body 13 presses and compresses the spring 12, so that the passage 11 is opened. On this basis, fix female end valve body 2 and the relative position of public end valve body 1 in the axial through bolt 3, can prevent to take place the relative motion in the axial between public end valve body 1 and the female end valve body 2, and then make the route 11 remain unblocked state all the time.

To achieve the compression of the male valve body 1, a compression element 22 may be provided on the female valve body 2. The shape of the extrusion 22 may be configured to match the shape of the poppet 13.

After the male valve body 1 and the female valve body 2 are assembled, the male valve body 1 and the female valve body 2 are connected to a pipeline respectively, and then the assembly of the stretch-break valve can be completed. When one end of the breaking valve is pulled by a preset force in the using process of the breaking valve, the bolt 3 is broken by the preset shearing force, and then the female valve body 2 and the male valve body 1 are separated. At this time, the spring 12 will release the elastic potential energy to push the valve core 13, and the valve core 13 is made to block the passage 11, so as to prevent the liquid from flowing out from the disconnected male end valve body 1.

In the embodiment of the present application, the accommodating portion 21 may be any portion capable of accommodating the plug 3. The receiving portion 21 may be a blind hole, a through hole or any other form that can be matched with the plug pin 3. The shape of the plug pin 3 is not strictly limited as long as the plug pin can block the relative movement between the male valve body 1 and the female valve body 2. It is also possible that the plug 3 is designed for example in the form of a snap ring.

Yet further alternatively, the housing 21 may be a threaded hole and the bolt 3 is formed as a threaded pin. The broken pin 3 can be conveniently rotated and taken out through the threaded hole.

Meanwhile, further, in the embodiment of the present application, the fitting portion 14 may be a blind hole, and the plug pin 3 may be fixed after being inserted into the blind hole. When the blind hole is adopted as the embedding part 14, once the bolt 3 is broken, the broken part of the bolt 3 can be knocked out, and the breaking valve can be continuously used by replacing the bolt 3, so that the replacement cost of the breaking valve is obviously reduced, and the maintenance cost of the whole machine is reduced. Specifically, a portion of the plug in contact with the accommodating portion may be threaded, and a portion in contact with the fitting portion may not be threaded. The non-threaded portion is more easily knocked out of the blind hole after breaking.

In the embodiment of the present application, the number of the pins 3 is 1 to 4. Further, the number of the pins 3 is 2 to 4. The stress of the plug pins 3 can be homogenized by adopting a centrosymmetric arrangement mode, so that the snapping valve can still be accurately broken when the snapping valve is subjected to forces in different directions, and the reliability is improved. The present application is not limited to the number of pins described herein. The number of latches can be any reasonable number.

In addition, it is particularly noted that in the embodiment of the present application, the fitting portion 14 may not be in the form of a hole. For example, the fitting portion 14 is formed as a fitting groove that surrounds the male end valve body 1 in the outer circumferential direction. The plug pin 3 is inserted into the embedding groove, so that the male valve body 1 and the female valve body 2 can be axially fixed.

Most stretch-break valves are manufactured using a lathe because they have a circular cross-section. At the moment, the mode of adopting the tabling groove can save the process step of punching, once-through molding in the lathe, the manufacturing cost is reduced remarkably.

Because the bolt 3 is the rigid body, its yield rupture's power is comparatively controllable, also can not take place ageing under the repeated impact of liquid, possesses very stable tensile ability. Therefore, compared with the prior art, the tensile capacity of the snapping valve of the embodiment of the application is not basically attenuated along with the normal use process, and the snapping valve has better durability. In addition, when the breaking valve adopting the bolt 3 is broken, the breaking valve can be continuously used only by replacing the bolt 3, so that the maintenance and replacement cost is reduced.

Second embodiment

The inventors of the present application have found that the use of a latch as a rupture triggering mechanism for a pop-off valve has stable tensile strength, longer life, and better cost advantages, but also has some problems.

In some special application scenarios, requirements are made not only on the breaking force of the breaking valve in the axial direction, but also on the situation when the breaking valve is subjected to a tensile force in a non-axial direction (non-axial direction includes any direction other than the axial direction, such as radial direction and oblique direction).

The same is true of the snap-off valve for a petrol station. In the application of fuel dispensers at filling stations, people often install a breakaway valve at the inlet of the fuel gun. When the fuel nozzle is forgotten at the fuel filler of the vehicle, the vehicle which is started will give the snap-off valve a diagonal, even transverse, tension through the fuel nozzle, instead of an axial tension.

Under the condition, the valve body structure adopting the traditional abruption valve is easy to incline in a small angle in the female valve body 2 due to the male valve body 1 and is blocked in the female valve body 2. Under the high horsepower of the automobile, the fuel dispenser can still be pulled down, and safety accidents occur.

Therefore, in this kind of application scenario, the spring 12 type breaking valve is widely adopted in the market at present.

In view of this, the second embodiment of the present application provides a pull-off valve, which is a further improvement of the pull-off valve of the first embodiment, and the main improvement is that, in the second embodiment of the present application, referring to fig. 4, 5, and 6, a first fool-proof groove 15 is formed on the outer surface of the male-end valve body 1, and the diameter of the groove bottom of the first fool-proof groove 15 is smaller than the diameter of a portion of the outer surface of the male-end valve body 1, which is closer to the fitting portion 14 than the first fool-proof groove 15.

In the embodiment of the present application, optionally, the first fool-proof groove 15 is located closer to the side of the female valve body 2 for connecting a pipe than to the fitting portion 14.

For simplicity, in the embodiment of the present application, taking fig. 4 and 5 as an example, the direction in which the male end valve body 1 is located with respect to the female end valve body 2 is defined as "lower", the direction in which the female end valve body 2 is located with respect to the male end valve body 1 is defined as "upper", and the first fool-proof groove 15 is located "upper" of the fitting portion 14.

Compared with the situation that the first fool-proof groove 15 is not arranged, the arranged first fool-proof groove 15 enables the male valve body 1 to incline at a small angle when the snapping valve is subjected to transverse or oblique shearing pulling force, and a yield effect is formed. The space of stepping down that first fool-proof groove 15 provided can prevent that public end valve body 1 from blocking, shows to improve the success probability that public end valve body 1 and female end valve body 2 of breaking valve break away from each other.

Further, in the embodiment of the present application, the diameter of the first fool-proof groove 15 may be at least partially increased from the direction near the side of the female valve body 2 for connecting a pipe to the direction near the side of the male valve body 1 for connecting a pipe. That is, the diameter of the first fool-proof groove 15 may gradually increase from the "upper" direction to the "lower" direction, and further, the diameter of the first fool-proof groove 15 may increase non-linearly, thereby forming a slope with a curved cross section. The first fool-proof groove 15 and the wall of the embedding part 14 can be smoothly transited, so that the slope is softer. The soft slope surface can improve the fool-proof effect.

Specifically, the included angle formed by the portion where the diameter of the first fool-proof groove 15 changes with respect to the groove bottom of the first fool-proof groove 15 may be in the range of 30 ° to 75 °. Further, the included angle formed by the portion where the diameter of the first fool-proof groove 15 changes with respect to the groove bottom of the first fool-proof groove 15 may be in the range of 45 ° to 60 °.

The structure of the first fool-proof groove 15 designed in this way can better provide a space for abdicating, and further improve the success probability of detachment.

Furthermore, optionally, in the embodiment of the present application, a first elastic ring (not shown) may be further sleeved on the first fool-proof groove 15. The first elastic ring that fills can prevent the male end valve body 1 that too big first fool-proof groove 15 probably leads to not hard up, makes the break valve possess better job stabilization nature.

Further, in the embodiment of the present application, the diameters of portions of the outer surface of the male end valve body 1 on the side closer to the female end valve body 2 for connecting pipes with respect to the first fool-proof groove 15 may be smaller than the groove bottom diameter of the first fool-proof groove 15.

That is, the diameters of the portions above the first fool-proof groove 15 are smaller than the diameter of the groove bottom of the first fool-proof groove 15, so that a more sufficient yielding space can be provided for the tilting motion of the male valve body 1.

In addition, in the embodiment of the present application, referring to fig. 5, a second fool-proof groove 16 may be formed on the outer surface of the male valve body 1, and the bottom diameter of the second fool-proof groove 16 is smaller than the diameter of the portion of the outer surface of the male valve body 1 closer to the fitting portion 14 than the second fool-proof groove 16;

the second fool-proof groove 16 is located closer to the male end valve body 1 on the side for connecting pipes than the fitting portion 14. That is, the second fool-proof groove 16 is located "below" the first fool-proof groove 15 and the fitting portion 14.

Because when connecting, female end valve body 2 need wrap up public end valve body 1 as good as possible, consequently all be provided with at the "upper and lower" both sides of gomphosis portion 14 and prevent slow-witted groove, can provide bigger space of stepping down, and then promote anti-sticking effect.

Still further alternatively, in the embodiment of the present application, the diameter of the second fool-proof groove 16 gradually decreases from the direction close to the side of the female valve body 2 for connecting pipes to the direction close to the side of the male valve body 1 for connecting pipes, and then gradually increases. Therefore, the cross-sectional shape of the second fool-proof groove 16 can be approximately formed into a concave shape, and a more sufficient space for abdicating can be provided.

And further, the diameter of the groove wall of the second fool-proof groove 16 can increase or decrease along the above rule in a non-linear way, and two slopes with curved cross sections can be formed.

The smooth and discontinuous slope transition formed can improve the fool-proof effect.

Also specifically, in the embodiment of the present application, the angle formed by the portion where the diameter of the second fool-proof groove 16 changes with respect to the groove bottom of the second fool-proof groove 16 may be in the range of 30 ° to 75 °.

Similarly, in the embodiment of the present application, a second elastic ring (not shown) may be sleeved on the second fool-proof groove 16. The second elastic ring that fills can prevent likewise that the second prevents that the slow-witted groove 16 probably brings the not hard up of public end valve body 1, makes the break valve possess better job stabilization nature.

Further, in the embodiment of the present application, referring to fig. 5, a fool-proof edge 23 that is matched with the second fool-proof groove 16 is formed at a corresponding portion of the inner surface of the female valve body 2. The shape of the fool-proof edge 23 is matched with the second fool-proof groove 16, and not that the two are required to be completely matched when the male valve body 1 and the female valve body 2 are connected, but the shape of the fool-proof edge 23 is designed according to the shape of the second fool-proof groove 16, so that the fool-proof edge 23 can avoid the groove wall part of the second fool-proof groove 16 when the male valve body 1 moves obliquely.

Specifically, as shown in fig. 5 and 6, the linear distance between the surface of the fool-proof edge 23 and the surface of the second fool-proof groove 16 may be gradually increased from the direction close to the pipe connecting side of the female valve body 2 to the direction close to the pipe connecting side of the male valve body 1. Further, the fool-proof edge 23 may form an edge with a cross-section that is an arc, and the curvature of this arc is greater than the curvature of the cross-section of the groove wall of the second fool-proof groove 16 on the side (i.e., "below") adjacent to the male valve body 1.

As the male end valve body 1 is tilted, the outer surface of the male end valve body 1 will come into contact with the inner surface of the female end valve body 2. The fool-proof edge 23 with larger curvature can provide larger yielding space, so that the male valve body 1 is kept relatively loose, external pulling force can better act on the plug pin 3 instead of the groove wall, and the shearing force of the plug pin 3 in the breaking valve is more controllable.

Third embodiment

The inventors of the present application have found that in prior art pipe transfer devices, it is common to provide an operable device, such as a handle, a filling gun, etc., at the outlet of the pipe. For ease of operation, it is often desirable to have these operable devices freely rotatable relative to the pipe itself.

Therefore, in this kind of application scenario, a rotatable device like a bearing is often provided on the market today to support the rotation function.

In view of this, in a third embodiment of the present application, a break valve is provided, which is a further improvement of the break valve of the first or second embodiment, and the main improvement is that, in the third embodiment of the present application, the part of the female valve body 2 that connects the external piping is able to rotate coaxially with respect to at least part of the male valve body 1.

The component which can coaxially rotate relative to the male valve body 1 is directly arranged on the female valve body 2, and the rotatable device can be combined into the abruption valve, so that the problems of stability and cost caused by additionally arranging the device are solved.

Specifically, in the embodiment of the present application, referring to fig. 2, the female valve body 2 includes a main body 24 and a connecting member 25 nested on the main body 24, the connecting member 25 having an external thread formed thereon for screwing an external pipe; wherein the connecting member 25 is coaxially rotatable with respect to the main body 24.

More specifically, an annular groove 241 may be formed on the body 24, and a convex ring 251 may be formed on an inner surface of the connecting member 25, the convex ring 251 being fitted into the annular groove 241 to form relative fixation.

The convex ring 251 and the annular groove 241 are matched, so that the device has the advantages of simple structure and good stability. The snap-off valve of the present embodiment not only reduces costs, but also is more convenient to install, since no separate rotatable device is required.

Embodiment IV

In a fourth embodiment of the present application, a break valve is provided, which is a further improvement of any one of the first to third embodiments, and the main improvement is that, in the fourth embodiment of the present application, referring to fig. 7, a plastic ring 17 is sleeved on the outer surface of the male end valve body 1, and the plastic ring 17 is located at a position closer to the male end valve body 1 for connecting an external pipe than to the fitting part 14;

further, as shown in fig. 8, a pressing member 22 is provided at a corresponding portion of the inner surface of the female valve body 2, and the pressing member 22 presses the plastic ring 17 to form an interference fit of the female valve body 2 with the plastic ring 17.

The interference fit between the male valve body 1 and the female valve body 2 can be utilized to stabilize the connection relationship. Meanwhile, when the male valve body 1 is subjected to transverse or oblique pulling force due to the plasticity of the plastic ring 17, the plastic ring 17 can intrude into the position of the plastic ring 17, so that the clamping is prevented and the foolproof capability is improved.

Accordingly, both the plastic ring 17 and the extrusion 22 may be made of a plastic material, such as plastic, high durometer rubber, or the like.

Further, in the embodiment of the present application, as shown in fig. 7, the width of the plastic ring 17 in the circumferential direction is periodically increased and decreased, forming a tooth-shaped structure.

The yielding space provided by the tooth-shaped structure is larger than that of a fully-surrounded structure, and the tooth-shaped structure has better strength and reliability and low cost than that of a hollowed-out structure.

Where extrusion 22 may be formed in a radial configuration of at least two layers with a gap 26 reserved between the layers. The reserved gap 26 can also be used as a yield space. The width of the gap 26 may be between 0.5 and 2 mm.

Fifth embodiment

For an application scenario in a gas station, the snap-off valve provided in each embodiment of the present application may be a non-oil gas recovery type snap-off valve, or an oil gas recovery type snap-off valve. In fig. 1 to 8, the shape structure of the non-oil gas recovery type snap-off valve is illustrated.

With the further technology, the oil gas recovery technology gradually replaces the non-oil gas recovery technology, and the effects of saving energy and reducing pollution are achieved.

Specifically, the gasoline recovery at a gasoline station refers to collecting volatilized gasoline and oil gas in the processes of loading and unloading gasoline and refueling vehicles, and reducing the pollution of the oil gas or converting the oil gas from a gaseous state into a liquid state and then converting the oil gas into the gasoline again by one or two methods of absorption, adsorption or condensation and the like so as to achieve the purpose of recycling.

Specifically, in the field of the snap-off valve, referring to fig. 9, the structure of the oil gas recovery type snap-off valve is similar to that of the non-oil gas recovery type snap-off valve, but the difference is that an air passage 4 for returning the recovered air is further arranged in the passage 11, and the air passage 4 and the passage 11 are sealed with each other.

Thus, the snapping valve also comprises:

the plug 3 has a part fixed in relative position by the receiving portion 21 and another part inserted into the fitting portion 14 to fix the relative position of the female valve body 2 and the male valve body 1 in the axial direction.

In the oil gas recovery type snap valve, the part forming the gas path 4 can be used as a part abutting against the valve core 13, so that the internal structure of the snap valve is simplified, and the space is saved.

It is to be understood that the terminology used in the description of the embodiments herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the specification of the present application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and "a" and "an" generally include at least two, but do not exclude at least one, unless the context clearly dictates otherwise.

It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

It should be understood that although the terms first, second, third, etc. may be used in the embodiments of the present application to describe certain components, these components should not be limited by these terms. These terms are only used to distinguish one component from another. For example, a first certain component may also be referred to as a second certain component, and similarly, a second certain component may also be referred to as a first certain component, without departing from the scope of the embodiments of the present application.

The words "if", as used herein, may be interpreted as "at … …" or "at … …" or "in response to a determination" or "in response to a monitoring", depending on the context. Similarly, the phrase "if it is determined" or "if it is monitored (a stated condition or event)" may be interpreted as "when determining" or "in response to determining" or "when monitoring (a stated condition or event)" or "in response to monitoring (a stated condition or event)", depending on the context.

In the embodiments of the present application, "substantially equal to", "substantially perpendicular", "substantially symmetrical", and the like mean that the macroscopic size or relative positional relationship between the two features referred to is very close to the stated relationship. However, it is clear to those skilled in the art that the positional relationship of the object is difficult to be exactly constrained at small scale or even at microscopic angles due to the existence of objective factors such as errors, tolerances, etc. Therefore, even if a slight point error exists in the size and position relationship between the two, the technical effect of the present application is not greatly affected.

It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.

In the various embodiments described above, while, for purposes of simplicity of explanation, the methodologies are shown and described as a series of acts, it is to be understood and appreciated by those of ordinary skill in the art that the methodologies are not limited by the order of acts, as some acts may, in accordance with one or more embodiments, occur in different orders and/or concurrently with other acts from that shown and described herein or not shown and described herein, as may be understood by those of ordinary skill in the art.

Those of skill in the art would understand that information, signals, and data may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits (bits), symbols, and chips that may be referenced throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

Those of skill would further appreciate that the various illustrative logical blocks, modules, units, circuits, and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, units, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

Finally, it should be noted that those skilled in the art will appreciate that embodiments of the present application present many technical details for the purpose of enabling the reader to better understand the present application. However, the technical solutions claimed in the claims of the present application can be basically implemented without these technical details and various changes and modifications based on the above-described embodiments. Accordingly, in actual practice, various changes in form and detail may be made to the above-described embodiments without departing from the spirit and scope of the present application.

In summary, the present application provides a K1, a snap valve, comprising:

the valve comprises a male-end valve body, a passage is formed in the male-end valve body, a spring and a valve core are arranged in the passage, the valve core tends to move towards the direction of blocking the passage under the action of the elastic force of the spring, and an embedded part is formed on the outer surface of the male-end valve body;

the female end valve body is sleeved on the male end valve body and abuts against the valve core so as to enable the passage to be smooth, and an accommodating part is formed on the female end valve body;

and a plug, a part of which is inserted into the embedding part to determine the relative position of the female valve body and the male valve body in the axial direction.

K2, according to the snapping valve of K1, be formed with first fool-proof groove on the surface of public end valve body, the tank bottom diameter of first fool-proof groove is less than the diameter of the position that is closer to the gomphosis portion on the surface of public end valve body relative to first fool-proof groove.

K3, according to K2 the snapping valve, the cover is equipped with first elastic ring on the first slow-witted groove of preventing.

K4. the snap-off valve according to K2, wherein the first fool-proof groove is located on a side closer to the female valve body for connecting the pipe than the fitting portion.

K5, according to the snapping valve of K4, the diameter of first fool-proof groove at least part is from being close to the direction that is used for the connecting tube of female end valve body, towards being close to the direction that is used for the connecting tube of male end valve body one side is crescent.

K6, according to the snapping valve of K5, the included angle formed by the part of the first fool-proof groove, the diameter of which changes, relative to the groove bottom of the first fool-proof groove is in the range of 30-75 degrees.

K7, according to the snapping valve of K6, the included angle that the position that the diameter of the first fool-proof groove changes forms relative to the groove bottom of the first fool-proof groove is within the range of 45-60 degrees.

K8, according to the snapping valve of any one of K4 to K7, the diameter of each portion on the outer surface of the male valve body, which is closer to the female valve body on the side for connecting a pipe, is smaller than the diameter of the bottom of the first fool-proof groove, relative to the first fool-proof groove.

K9, according to the snapping valve of K4, wherein a second fool-proof groove is formed on the outer surface of the male end valve body, and the diameter of the groove bottom of the second fool-proof groove is smaller than the diameter of the portion, closer to the embedding portion than the second fool-proof groove, on the outer surface of the male end valve body;

the second fool-proof groove is positioned on one side, relative to the embedding part, of the male valve body, which is closer to the male valve body and used for connecting a pipeline.

K10, according to K9 the snapping valve, the diameter of second fool-proof groove is from being close to the direction that is used for the one side of connecting tube of female end valve body, towards being close to the direction that is used for the one side of connecting tube of public end valve body is earlier diminishing gradually, the back is crescent.

K11, according to the snapping valve of K10, the included angle formed by the part of the diameter of the second fool-proof groove, which is changed, relative to the groove bottom of the second fool-proof groove is in the range of 30-75 degrees.

K12, according to K9 the snapping valve, the second is prevented slow-witted groove and is gone up the cover and be equipped with the second elastic ring.

K13, according to any one of K9-K12 the snapping valve, female end valve body's internal surface correspond the position be formed with the second prevent slow-witted groove matched with prevent slow-witted edge, prevent that the surface of slow-witted edge with the straight-line distance on the surface of second prevent slow-witted groove is close to the direction of the one side that is used for the connecting tube of female end valve body, towards being close to the direction of the one side that is used for the connecting tube of public end valve body increases gradually.

K14, the stretch-break valve according to K1, wherein the receptacle is a threaded hole and the plug is formed as a threaded pin.

K15, according to the abruption valve of K14, gomphosis portion is the blind hole, the bolt inserts the blind hole forms fixedly.

K16, according to the abruption valve of K14, the quantity of bolt is 1 to 4.

K17, according to the abruption valve of K16, the quantity of bolt is 2 to 4.

K18, the stretch break valve according to any one of K14 to K17, wherein the portion of the plug in contact with the receptacle is threaded and the portion in contact with the fitting is unthreaded.

K19, the abruption valve according to K1, wherein the fitting portion is formed as a fitting groove that surrounds the male end valve body in an outer circumferential direction.

K20. according to the breakaway valve of K1, the part of the female valve body that connects to the external line can rotate coaxially with respect to at least part of the male valve body.

K21, the abruption valve according to K20, wherein the female valve body comprises a main body and a connecting piece nested on the main body, and an external thread is formed on the connecting piece and used for screwing the external pipeline;

the connector is capable of coaxial rotation relative to the body.

K22, according to the abruption valve of K21, be formed with annular groove on the main part, the internal surface of connecting piece is formed with the bulge loop, the bulge loop imbeds in the annular groove so as to form relative fixedly, the connecting piece passes through the bulge loop is rotatory relative to the main part.

K23, according to the snapping valve of K1, the outer surface of the male end valve body is sleeved with a plastic ring, and the plastic ring is positioned on a position, relative to the embedded part, closer to the male end valve body and used for connecting an external pipeline;

the corresponding position of the internal surface of female end valve body is provided with the extruded piece, the extruded piece extrusion plasticity ring, so that female end valve body with the plasticity ring forms interference fit.

K24, the snap-off valve according to K23, the width of the plastic ring in the circumferential direction periodically increasing and decreasing, forming a toothed structure.

K25, the stretch-break valve according to K23, the extrusion forming a structure of at least two layers in a radial direction with a gap left between the two layers.

K26, the snap-off valve according to K25, the gap having a width of between 0.5 and 2 mm.

K27, according to the break valve of K1, the break valve is oil gas recovery formula break valve or non-oil gas recovery formula break valve.

Claims

1. A breakaway valve, comprising:

2. The snapping valve of claim 1, wherein a first fool-proof groove is formed in an outer surface of the male valve body, a groove bottom diameter of the first fool-proof groove being smaller than a diameter of a portion of the outer surface of the male valve body closer to the engaging portion than the first fool-proof groove.

3. The snapping valve of claim 2, wherein said first fool-proof groove is sleeved with a first resilient ring.

4. The pop valve of claim 2, wherein the first fool-proof groove is located closer to a side of the female-end valve body for connecting a pipe than the fitting portion.

5. The snapping valve of claim 4, wherein at least a portion of said first fool-proof groove has a diameter that gradually increases from a direction adjacent to a side of said female valve body for connecting to a conduit to a direction adjacent to a side of said male valve body for connecting to a conduit.

6. The snapping valve of claim 5, wherein the portion of said first fool-proof groove that changes diameter forms an angle in the range of 30 ° to 75 ° with respect to the groove bottom of said first fool-proof groove.

7. The snapping valve of claim 6, wherein the portion of the first fool-proof groove that changes diameter forms an angle in the range of 45 ° to 60 ° with respect to the groove bottom of the first fool-proof groove.

8. The snapping valve according to any one of claims 4 to 7, wherein the diameter of each portion of the outer surface of the male valve body closer to the side of the female valve body intended to be connected to a pipe with respect to the first fool-proof groove is smaller than the diameter of the bottom of the first fool-proof groove.

9. The snapping valve of claim 4, wherein a second fool-proof groove is formed on the outer surface of the male valve body, the groove bottom diameter of the second fool-proof groove being smaller than the diameter of a portion of the outer surface of the male valve body closer to the engaging portion than the second fool-proof groove;

10. The snapping valve of claim 9, wherein the diameter of said second fool-proof groove gradually decreases from the direction of the side of said female valve body for connecting to the conduit to the direction of the side of said male valve body for connecting to the conduit, and then gradually increases.

11. The pop valve of claim 10, wherein the portion of the second fool-proof groove that changes diameter forms an angle in the range of 30 ° to 75 ° with respect to the groove bottom of the second fool-proof groove.

12. The snapping valve of claim 9, wherein said second fool-proof groove is sleeved with a second resilient ring.

13. The snapping valve according to any one of claims 9 to 12, wherein a fool-proof edge that is matched with the second fool-proof groove is formed at a corresponding portion of the inner surface of the female valve body, and a linear distance between a surface of the fool-proof edge and a surface of the second fool-proof groove gradually increases from a direction close to one side of the female valve body for connecting a pipe to a direction close to one side of the male valve body for connecting a pipe.

14. The stretch-break valve according to claim 1, wherein the receiving portion is a threaded hole and the plug is formed as a threaded pin.

15. The pop-off valve as recited in claim 14, wherein the engaging portion is a blind hole, and the plug is inserted into the blind hole to form a fixing.

16. The pop-off valve of claim 14, wherein the number of latches is 1 to 4.

17. The pop-off valve of claim 16, wherein the number of latches is 2 to 4.

18. The stretch-break valve according to any of claims 14 to 17, wherein a portion of the plug in contact with the receiving portion is threaded and a portion in contact with the fitting portion is unthreaded.

19. The abruption valve according to claim 1, wherein the fitting portion is formed as a fitting groove surrounding the male end valve body in an outer circumferential direction.

20. The pop valve of claim 1, wherein the component of the female-end valve body to which the external conduit is connected is coaxially rotatable with respect to at least a portion of the component of the male-end valve body.

21. The pop valve of claim 20, wherein the female valve body comprises a body and a connector received on the body, the connector having an external thread formed thereon for threading the external conduit;

the connector is capable of coaxial rotation relative to the body.

22. The pop valve of claim 21, wherein the body defines an annular groove, and wherein the connector member defines a bead on an inner surface thereof, the bead engaging the annular groove to define a relative fit, the connector member being rotatable relative to the body by the bead.

23. The snapping valve according to claim 1, wherein said male valve body is provided on its outer surface with a plastic ring, said plastic ring being located closer to said male valve body than to said engagement for connecting to an external pipe;

24. The pop-off valve of claim 23, wherein the plastic ring periodically increases and decreases in width in the circumferential direction, forming a toothed configuration.

25. The pop valve of claim 23, wherein the extrusion is radially formed into a configuration of at least two layers with a gap reserved therebetween.

26. The pop-off valve of claim 25, wherein the gap is between 0.5 and 2mm wide.

27. The breakaway valve of claim 1 wherein the breakaway valve is an oil and gas recovery type breakaway valve or a non-oil and gas recovery type breakaway valve.