CN112879613A

CN112879613A - Break valve with tension alarm device

Info

Publication number: CN112879613A
Application number: CN202110026753.XA
Authority: CN
Inventors: 鲍思佳; 顾成杰; 林垚; 仲崇英
Original assignee: Shanghai Sunwise Energy System Co ltd
Current assignee: Shanghai Sunwise Energy System Co ltd
Priority date: 2021-01-09
Filing date: 2021-01-09
Publication date: 2021-06-01
Anticipated expiration: 2041-01-09
Also published as: CN112879613B

Abstract

The invention relates to the technical field of hydrogenation equipment of a hydrogenation station, in particular to a stretch-break valve for a hydrogenation machine with a tension alarm device, which comprises a stretch-break valve body, wherein an elastic blocking mechanism is arranged in the stretch-break valve to limit the separation of an upper valve body and a lower valve body; the tension meter is connected with the tension meter through the spring, the alarm is arranged on the tension meter, and the alarm can be given out when the spring moves beyond a preset value, so that the tension meter has the advantages that: the breaking valve can actively send out safety alarm when the tensile force borne by the lower valve body exceeds a specified value, so that accidents are prevented.

Description

Break valve with tension alarm device

Technical Field

The invention belongs to the technical field of hydrogenation equipment of a hydrogenation station, and particularly relates to a snapping valve with a tension alarm device.

Background

During or after the hydrogenation process of the hydrogen energy automobile is finished, if the automobile is started accidentally without pulling out the hydrogenation gun, the hydrogenation hose can be pulled off or the hydrogenation machine can be pulled down, so that the hydrogen leakage accident is caused. The hydrogenation hose is provided with the breaking valve, so that the upper valve body and the lower valve body can be disconnected when abnormal tension is applied, two ends of the hydrogenation hose are automatically and quickly sealed, and hydrogen leakage is blocked. The breaking valve is essentially two opposite one-way valves, and when the upper valve body and the lower valve body are disconnected, the valve core is propped against the valve seat under the action of the spring, so that the two-way sealing effect is realized.

The existing breaking valve only has the breaking function, is a passive safety measure and cannot remind workers and drivers that a hydrogenation gun is still placed on a vehicle.

Disclosure of Invention

The invention aims to provide a snapping valve for a hydrogenation machine with a tension alarm device, which can actively send out a safety alarm to prevent accidents when the tension borne by a lower valve body exceeds a specified value and is smaller than the snapping force. And the upper valve body and the lower valve body are disconnected and automatically sealed after the breaking force is reached.

In order to achieve the purpose, the invention provides the following technical scheme: a stretch-break valve with a tension alarm device comprises a stretch-break valve body, an elastic blocking mechanism arranged in the stretch-break valve and used for limiting the separation of an upper valve body and a lower valve body, the stretch-break valve further comprises an alarm device arranged on the outer side wall of the stretch-break valve, the alarm device comprises a sliding groove formed by punching the outer wall of the stretch-break valve at the position of the elastic blocking mechanism, the alarm device further comprises a long rod which penetrates through the sliding groove and is fixed on the elastic blocking mechanism, a tension meter spring is fixedly arranged at the other end of the long rod, and the elastic blocking mechanism can drive the long rod to move when moving and further drive the spring to move; the tension meter is connected with the tension meter through a spring, an alarm is arranged on the tension meter, and an alarm can be given out when the spring moves to exceed a preset value.

Preferably, the tensile gauge spring is removably mounted.

Preferably, the stretch-break valve further comprises an upper end cover and an upper valve body, wherein the upper end cover and the upper valve body are internally provided with the first valve cavity, the upper end cover comprises an upper end cover side wall and an upper end cover bottom wall, and the inner wall of the upper end cover side wall is connected with the outer wall of the upper valve body; the upper end cover also comprises an air inlet joint arranged on the outer wall of the bottom wall of the upper end cover, an air inlet pipe communicated with the hydrogen conveying pipe is arranged between the air inlet joint and the bottom wall of the upper end cover, and hydrogen enters the first valve cavity through the air inlet pipe; an upper end cover inner column is arranged on the inner wall of the bottom wall of the upper end cover, and is provided with a balance hole which is communicated with the first valve cavity and the outside; an upper valve core is further arranged on the upper end cover inner column, an upper valve core spring is arranged between the upper valve core and the bottom wall of the upper end cover, and the upper valve core spring applies acting force moving towards the right to the upper valve core; the breaking valve also comprises a lower end cover and a lower valve body, wherein a second valve cavity is formed in the lower end cover; the outer wall of the lower end cover is connected with the inner wall of the lower valve body; the lower valve body comprises a lower valve body outer column, an internal channel is arranged in the lower valve body outer column, and one side of the internal channel, which is close to the lower end cover, is opened to form an opening; the lower end cover comprises an air outlet joint connected with the hydrogenation gun, an air outlet pipe is arranged in the air outlet joint, and hydrogen in the second valve cavity enters the hydrogenation gun through the air outlet pipe; the lower valve body comprises a concave part forming a lower valve body convex step, a lower valve core spring seat is arranged on the lower valve body convex step, a lower valve core is arranged on the lower valve core spring seat, and a lower valve core spring is arranged between the lower valve core spring seat and the lower valve core; the spring seat is also provided with a valve body air outlet hole, and hydrogen in the second valve cavity can enter the air outlet pipe through the valve body air outlet hole; the upper valve body is provided with a matching hole for the lower valve body outer column to enter the first valve cavity, the inner wall of the matching hole and the outer wall of the matching hole for the lower valve body outer column to enter are sealed, the end surface of the lower valve body outer column is contacted with the upper valve core, and the lower valve body outer column is provided with a valve body air inlet so that the inner channel is communicated with the first valve cavity; the elastic blocking mechanism is arranged between the lower valve body and the upper valve body; the elastic blocking mechanism comprises a sleeve clamped on the outer wall of the lower valve body; a steel ball is arranged in the sleeve, and a lower valve body groove clamped by the steel ball is arranged on the outer wall of the lower valve body; a main spring seat is arranged on the outer wall of the sleeve, the main spring seat is L-shaped and is connected with the upper valve body, and a main spring is arranged between the sleeve and the main spring seat; a second limiting groove is formed in the inner wall of the main spring seat and is arranged in the direction in which the steel ball is close to the main spring; when the lower valve body is separated from the upper valve body, the sleeve and the lower valve body move rightwards together and compress the main spring until the steel ball reaches the second limiting groove, the steel ball is pushed into the second limiting groove, the lower valve body is not clamped by the steel ball, the sliding groove is located on the outer side of the sleeve, the long rod is fixed on the sleeve and penetrates through the sliding groove, the sleeve can drive the long rod to move when moving, the tension meter spring is further driven to move, and an alarm can be given when the spring moves beyond a preset value.

Preferably, a first cover is formed on the outer side wall of the upper valve core, a first convex step is arranged on the inner wall of the upper valve body, when the upper valve body is clamped with the lower valve body, a gap is formed between the first cover and the first convex step, hydrogen enters the air inlet hole of the valve body from the gap, when the upper valve body is separated from the lower valve body, the upper valve core moves rightwards under the action of the spring of the upper valve core, and the first cover and the first convex step are jointed and sealed; the lateral wall of the lower valve core forms a second cover and a lower valve core sealing surface, the inner wall of the lower valve body is provided with a second convex step, when the pressure of the first valve cavity is greater than that of the second valve cavity, a gap is formed between the second cover and the second convex step, hydrogen enters the second valve cavity from the first valve cavity, when the pressure of the first valve cavity is not greater than that of the second valve cavity, the second cover and the second convex step are attached and sealed, and the lower valve core sealing surface is attached and sealed with an opening of the inner channel.

Preferably, the main spring seat is further provided with a first limiting groove, and the first limiting groove is arranged in the direction in which the steel ball is far away from the main spring.

Preferably, the pop-off valve further comprises a sealing structure; the sealing structure comprises a sealing structure, a sealing structure and a sealing structure, wherein the sealing structure is arranged between an upper end cover and an upper valve core, between the upper valve core and an upper valve body, between the upper valve core and a lower valve body, between the lower valve body and a matching hole, between the lower valve body and a lower valve core, and between a lower end cover and a lower valve body; the sealing structure comprises an O-shaped sealing ring, and the outer side wall of the O-shaped sealing ring forms a sealing surface.

Preferably, the sealing structure further comprises sealing retainer rings which are arranged between the upper end cover and the upper valve core and between the upper valve core and the lower valve body.

Preferably, the upper spool is provided with a retainer ring extending toward the upper end cap, the retainer ring securing the upper spool spring and limiting the maximum compression range of the upper spool spring.

Preferably, an inclined plane is formed between the outer wall of the bottom wall of the upper end cover and the air inlet joint, and the air inlet pipe is arranged along the inclined plane.

Preferably, the upper end cover is in threaded connection with the upper valve body, the lower end cover is in threaded connection with the lower valve body, and the upper valve body is in threaded connection with the elastic blocking mechanism.

Compared with the prior art, the application can obtain the following technical effects:

1. the pull-off valve is combined with the pull alarm device, an alarm is given when the preset alarm pull force is exceeded but the pull-off force is not reached, the early warning is given to the working personnel, the abnormal condition of the pull force is found in time, and the pull-off valve has better safety compared with a single pull-off valve.

2. The size of the breaking force can be adjusted by replacing springs with different specifications.

3. Two limiting grooves are arranged, so that extra force is not required to be provided to compress the main spring during resetting, and the installation is more convenient.

Of course, it is not necessary for any one product to achieve all of the above-described technical effects simultaneously.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic view of the inventive pop-off valve gas flow.

Fig. 2 is a schematic view of the internal structure of the pop-up valve of the present invention.

Fig. 3 is a schematic structural view of the sliding groove of the present invention.

In the figure, an upper end cover 1, an upper end cover side wall 11, an upper end cover bottom wall 12, an air inlet joint 13, an air inlet pipe 14, an inclined plane 15, an upper end cover inner column 16, a balance hole 17, an upper valve body 2, a matching hole 21, a first convex step 22, an upper valve core 3, an upper valve core groove 31, an upper valve core spring 32, a first front cover 33, a baffle ring 34, a lower valve body 4, a lower valve body outer column 41, a valve body air inlet 42, an inner channel 43, a second convex step 44, a lower valve body convex step 45, a lower valve body groove 46, a lower valve core 5, a second front cover 51, a lower valve core sealing surface 52, a lower valve core spring seat 53, a lower valve core spring 54, a valve body air outlet hole 55, a lower end cover 6, an air outlet joint 61, an air outlet pipe 62, a first valve cavity 7, a second valve cavity 8, an elastic blocking mechanism 9, a main spring seat 91, a first limit groove 911, a second limit groove 912, a sleeve 92, a steel cavity 93, a sliding groove 101, a long rod 102, a tension meter spring 103, a tension meter 104 and an alarm 105.

Detailed Description

Embodiments of the present application will be described in detail with reference to the drawings and examples, so that how to implement technical means to solve technical problems and achieve technical effects of the present application can be fully understood and implemented.

Referring to fig. 1 to 3, the present invention provides a technical solution: the utility model provides a break valve with pulling force alarm device, includes the break valve body, the elasticity card that sets up in the break valve keeps off mechanism 9, the separation of valve body about the restriction, its characterized in that: the stretch-break valve further comprises an alarm device 100 arranged on the outer side wall of the stretch-break valve, the alarm device 100 comprises a sliding groove 101 formed by punching through the outer wall of the stretch-break valve at the position of the elastic blocking mechanism 9, the alarm device 100 further comprises a long rod 102 penetrating through the sliding groove 100 and fixed on the elastic blocking mechanism 9, a tension meter spring 103 is fixedly arranged at the other end of the long rod 102, and the elastic blocking mechanism 9 can drive the long rod 102 to move when moving and further drive the spring to move; the tension meter spring 103 is connected with the tension meter 104, an alarm 105 is arranged on the tension meter 104, and an alarm can be given when the spring moves to exceed a preset value.

In the above technical solution, the stretch-break valve of the invention includes an upper end cover 1 and an upper valve body 2, and a first valve cavity 7 is arranged in the upper end cover 1 and the upper valve body 2, the upper end cover 1 includes an upper end cover side wall 11 and an upper end cover bottom wall 12, the inner wall of the upper end cover side wall 11 is in threaded connection with the upper valve body 2, the inner wall of the upper end cover bottom wall 12 is provided with an upper end cover inner column 16, the upper end cover inner column 16 is provided with a balance hole 17 communicated with the outside, the inlet of the balance hole 17 is arranged on the end surface of the upper end cover inner column 16, the balance hole 17 is communicated with the first valve cavity 7 and the outside, the outer wall of the upper end cover bottom wall 12 is provided with an air inlet joint 13, an air inlet pipe 14 is arranged between the air inlet joint 13 and the upper end cover bottom wall 12, hydrogen can enter the first valve cavity 7 through the air inlet pipe 14, in order not to conflict with the position of the balance hole 17, the balance hole 17 extends opposite to the air inlet pipe 14, and the outlet is arranged on the inclined surface 15; the upper end cover inner column 16 is further provided with an upper valve core 3, an upper valve core spring 32 is arranged between the upper valve core 3 and the upper end cover bottom wall 12, the upper valve core spring 32 applies a force moving towards the right to the upper valve core 3, a retaining ring 34 extending towards the upper end cover 1 is arranged on the upper valve core 3, and the retaining ring 34 surrounds the upper valve core spring 32 so as to limit the maximum compression range of the upper valve core spring 32 and effectively fix the upper valve core spring 32.

The snapping valve further comprises a lower end cover 6 and a lower valve body 4, a second valve cavity 8 is arranged in the lower end cover 6 and the lower valve body 4, the outer wall of the lower end cover 6 is in threaded connection with the inner wall of the lower valve body 4, the lower valve body 4 comprises a lower valve body outer column 41 extending outwards, an inner channel 43 is arranged in the lower valve body outer column 41, one side, close to the lower end cover 6, of the inner channel 43 is opened to form an opening, so that the inner channel 43 is communicated with the second valve cavity 8, the lower end cover 6 comprises an air outlet connector 61 connected with a hydrogenation gun, an air outlet pipe 62 is arranged in the air outlet connector 61, and hydrogen in the second valve cavity 8 enters the hydrogenation gun through the air outlet; the lower valve body 4 is provided with a concave lower valve body convex step 45, the lower valve core spring seat 53 is arranged on the lower valve body convex step 45, the end surface of the lower valve core spring seat 53 is respectively attached to the lower valve body 4 and the lower end cover 6, the lower valve core 5 is arranged on the lower valve core spring seat 53, a lower valve core spring 54 is arranged between the lower valve core spring seat 53 and the lower valve core 5, the lower valve core spring 54 applies acting force moving leftwards to the lower valve core 5 under the air pressure balance state, the lower valve core 5 covers the opening of the internal channel 43, and the internal channel 43 and the second valve cavity 8 are blocked; the spring seat 53 is also provided with a valve body air outlet hole 55, and hydrogen in the second valve cavity 8 can enter the air outlet pipe 62 through the valve body air outlet hole 55 and then enter the hydrogenation gun.

The upper valve body 2 is provided with a matching hole 21 for allowing the lower valve body outer column 41 to enter the first valve cavity 7, when the lower valve body outer column 41 enters the first valve cavity 7, the inner wall of the matching hole 21 and the outer wall of the matching hole 21 for the lower valve body outer column 41 to enter are sealed, the upper valve core 5 is provided with an upper valve core groove 31, the end surface of the lower valve body outer column 41 is in contact with the upper valve core groove 31 and applies acting force moving leftwards to the upper valve core 5, and when the lower valve body outer column 41 moves to be attached to the end surface of the upper end cover inner column 16, the inlet of the balance hole 17 is blocked, so that the first valve cavity 7 is not communicated with the outside and is in a closed state; a valve body air intake hole 42 is provided on the lower valve body outer column 41 so that the inner passage 43 communicates with the first valve chamber 7; the first valve chamber 7 and the second valve chamber 8 are in a sealed closed state because the internal passage 43 is blocked by the force of the initial lower spool spring 54 applying the leftward movement of the lower spool 5.

An elastic blocking mechanism 9 is arranged between the lower valve body 4 and the upper valve body 2; when the upper valve body 2 is clamped with the lower valve body 4, the elastic clamping mechanism 9 can provide acting force for the lower valve body 4 to continuously move leftwards, at the moment, the outer end face of the lower valve body 4 is attached to the inner column 16 of the upper end cover and pushes the upper valve core 5 to move leftwards, when hydrogen continuously enters the first valve cavity 7, the pressure of the first valve cavity 7 is larger than that of the second valve cavity 8, the lower valve core 5 is pushed to move rightwards, and the lower valve core 5 is in an opening state that the first valve cavity 7 is communicated with the second valve cavity 8; the elastic blocking mechanism 9 comprises a sleeve 92 clamped on the outer wall of the lower valve body 4; a steel ball 93 is arranged in the sleeve 92, a lower valve body groove 46 for clamping the steel ball is arranged on the outer wall of the lower valve body 4, the steel ball 93 can fall into the lower valve body groove 46, and the lower valve body 4 is driven to move in the moving process of the steel ball 93; a main spring seat 91 is arranged on the outer wall of the sleeve 92, the main spring seat 91 is L-shaped and is in threaded connection with the upper valve body 2, a main spring 94 is arranged between the sleeve 92 and the main spring seat 91, the main spring 94 applies acting force moving leftwards to the sleeve 92 and further transmits the acting force to the lower valve body 4 moving leftwards, and the acting force counteracts the acting force of the upper valve core 3, so that the lower valve body outer column 41 can be attached to the upper end cover inner column 41 when the lower valve body 4 is clamped with the upper valve body 2; at the moment, the assembly of the breaking valve is finished, when hydrogen is introduced, the pressure of the first valve cavity 7 is greater than that of the second valve cavity 8, the lower valve core 5 is pushed by the pressure to overcome the acting force of the lower valve core spring 54 and move rightwards, and the hydrogen can enter the second valve cavity 8; when the gas transmission is stopped, the pressure of the first valve chamber 7 approaches to the pressure of the second valve chamber 8, the pressure difference cannot overcome the acting force exerted by the lower valve core spring 54, the opening of the inner channel 43 is blocked by the lower valve core 5, and the first valve chamber 7 and the second valve chamber 8 are in a sealed closed state again; a second limit groove 912 is arranged on the inner wall of the main spring seat 91, and the second limit groove 912 is arranged in the direction of the steel ball 93 close to the main spring 94; when the lower valve body 4 is separated from the upper valve body 2, the sleeve 92 and the lower valve body 4 move rightwards together and compress the main spring 94 until the steel ball 93 reaches the second limiting groove 912 and is pushed into the second limiting groove 912, after the steel ball 93 enters the second limiting groove 912, the lower valve body 4 is not clamped by the steel ball 93 and continues to move rightwards until the lower valve body 4 is completely separated from the upper valve body 4, the lower valve body outer column 41 is exposed outside, and at the moment, the upper valve core 3 is separated from the acting force of the lower valve body 6 and can move rightwards to block the matching hole 21, so that the first valve cavity 7 is in a sealed closing state; because the lower valve body outer column 41 is exposed to the outside, the inner channel 43 is communicated with the outside, at this time, pressure difference cannot be generated to push the lower valve core 5 to move rightwards, the lower valve core 5 moves leftwards under the action of the lower valve core spring 54 to block the opening of the inner channel 43, and the second valve cavity 8 is in a sealed closed state; the main spring seat 91 is further provided with a first limiting groove 911, and the first limiting groove 911 is arranged in the direction in which the steel ball 93 is far away from the main spring 94 and used for reassembling the abruption valve, so that the abruption valve can be repeatedly used.

The stretch-break valve also comprises an alarm device 100 arranged on the outer side wall of the stretch-break valve, the alarm device 100 comprises a sliding groove 101 formed by penetrating the outer wall of an upper valve body 2 at the position of a sleeve 92, the alarm device 100 further comprises a long rod 102 which penetrates the sliding groove 101 and is fixed on the sleeve 92, a tension meter spring 103 is fixedly arranged at the other end of the long rod 102, the sleeve 92 can drive the long rod 102 to move when moving, the tension meter spring 103 is further driven to move, the tension meter spring 103 is connected with a tension meter 104, an alarm 105 is arranged on the tension meter 104, the tension meter spring 103 can be detached and installed, a worker can replace springs with different elastic coefficients according to needs, when the tension meter spring 103 moves to exceed a preset value, the alarm 105 can give an alarm, and the preset value can be manually set.

Specifically, a first cover 33 is formed on the outer side wall of the upper valve element 3, a first convex step 22 is arranged on the inner wall of the upper valve body 2, when the upper valve body 2 is clamped with the lower valve body 4, a gap is formed between the first cover 33 and the first convex step 22, and hydrogen enters the valve body air inlet hole 42 from the gap; when the upper valve body 2 is separated from the lower valve body 4, the upper valve core 3 moves rightwards under the action of the upper valve core spring 32, and the first cover 33 is attached and sealed with the first convex step 22; the outer side wall of the lower valve core 5 forms a second cover 51 and a lower valve core sealing surface 52, the inner wall of the lower valve body 4 is provided with a second convex step 44, when the pressure of the first valve cavity 7 is greater than that of the second valve cavity 8, a gap is formed between the second cover 51 and the second convex step 44, hydrogen enters the second valve cavity 8 from the first valve cavity 7, when the pressure of the first valve cavity 7 is not greater than that of the second valve cavity 8, the second cover 51 and the second convex step 44 are attached and sealed, and the lower valve core sealing surface 52 is attached and sealed with the opening of the inner channel 43.

Specifically, the pop-off valve further comprises a sealing structure; the sealing structure is arranged between the upper end cover 1 and the upper valve core 3, between the upper valve core 3 and the upper valve body 2, between the upper valve core 3 and the lower valve body 4, between the lower valve body 4 and the matching hole 21, between the lower valve body 4 and the lower valve core 5, and between the lower end cover 6 and the lower valve body 4; the sealing structure comprises an O-shaped sealing ring 10, and the outer side wall of the O-shaped sealing ring 10 forms a sealing surface; the sealing structure further comprises sealing retaining rings which are arranged between the upper end cover 1 and the upper valve core 3 and between the upper valve core 3 and the lower valve body 4.

The working principle is as follows:

during normal operation, because the air pressure is balanced left and right, the steel ball 93 is only pushed rightwards by the upper valve core spring 32, the value is fixed, the steel ball can be balanced only by the corresponding pretightening force provided by the main spring 94, during normal hydrogenation operation, the air inlet joint 13 is connected with the hydrogen conveying pipe, and the air outlet joint 61 is connected with the hydrogenation gun; after ventilation, gas enters the first valve cavity 7 from the gas inlet pipe 14, enters the internal channel 43 through the valve body gas inlet hole 42 on the lower valve body 4, so that the pressure of the internal channel 43 is greater than that of the second valve cavity 8, the lower valve core 5 is jacked open, hydrogen enters the second valve cavity 8, and then enters the gas outlet pipe 62 through the valve body gas outlet hole 55, and the continuous hydrogenation process is realized.

When the snapping action occurs and the lower end cover 6 is subjected to a rightward pulling force, the upper valve core 3 moves rightward under the pushing of the upper valve core spring 32, the first cover 33 and the first convex step 22 are attached and sealed, and the first valve cavity 7 is in a sealed state; due to the limit of the steel ball 93, the sleeve 92 moves rightwards together with the lower valve body 4, and compresses the main spring 94; in the process that the lower valve body 4 is separated from the upper valve body 2 and moves rightwards, the sleeve 92 moves rightwards and drives the long rod 102 to move, and the long rod 102 pulls the tension meter spring 103 rightwards; when the tension exceeds a preset value, the alarm 105 is started to give an alarm to remind a worker that the tension is abnormal; if the pulling force is continuously increased, the main spring 94 is further compressed, so that the steel ball 93 can be pushed into the second limiting groove 912 when reaching the second limiting groove 912 of the main spring seat 91, at the moment, the lower valve body 4 is not limited by the steel ball 93 and can be continuously pulled out to the right, due to the absence of the internal air pressure effect, the lower valve core 5 is pushed by the lower valve core spring force 54 to move to the left, the second cover 51 is attached and sealed with the second convex step 44, the lower valve body 4 is continuously pulled to the right until the lower valve body 4 is completely separated, the steel ball 93 loses the limiting of the lower valve body 4 and returns to the left along with the sleeve 92 under the pulling force of the main spring 94; at the moment, the two valve cores of the upper valve body and the lower valve body are in a sealing state, and the function of preventing hydrogen leakage is achieved.

During reassembly, the screw thread of the main spring seat 91 is screwed to align the first limit groove 911 with the steel ball 93, the lower valve body 4 is inserted, the steel ball 93 can be jacked into the first limit groove 911 by the lower valve body 4, the lower valve body 4 can be smoothly inserted, the main spring seat 91 is screwed down, the steel ball 93 is clamped in the lower valve body groove 46 at the moment, and the lower valve body 4 is locked.

As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, and a person skilled in the art can solve the technical problem within a certain error range to substantially achieve the technical effect.

It is 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.

The foregoing description shows and describes several preferred embodiments of the invention, but as aforementioned, it is to be understood that the invention is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a break valve with pulling force alarm device, includes the break valve body, the elasticity card that sets up in the break valve keeps off mechanism (9), the separation of valve body, its characterized in that about the restriction: the stretch-break valve further comprises an alarm device (100) arranged on the outer side wall of the stretch-break valve, the alarm device (100) comprises a sliding groove (101) formed by punching through the outer wall of the stretch-break valve at the position of the elastic blocking mechanism (9), the alarm device (100) further comprises a long rod (102) penetrating through the sliding groove (101) and fixed on the elastic blocking mechanism (9), a tension meter spring (103) is fixedly arranged at the other end of the long rod (102), and the elastic blocking mechanism (9) can drive the long rod (102) to move when moving and further drive the spring to move; the tension meter spring (103) is connected with the tension meter (104), an alarm (105) is arranged on the tension meter (104), and an alarm can be given out when the spring moves beyond a preset value.

2. A stretch break valve with a tensile force warning device according to claim 1, wherein: the elastic tension meter spring (103) is detachably mounted.

3. A break valve with a pull alarm device according to claim 1 or 2, characterized in that: the abruption valve further comprises an upper end cover (1) and an upper valve body (2), wherein a first valve cavity (7) is formed in the upper end cover (1), the upper end cover (1) comprises an upper end cover side wall (11) and an upper end cover bottom wall (12), and the inner wall of the upper end cover side wall (11) is connected with the outer wall of the upper valve body (2); the upper end cover (1) further comprises an air inlet joint (13) arranged on the outer wall of the bottom wall (12) of the upper end cover, an air inlet pipe (14) communicated with a hydrogen conveying pipe is arranged between the air inlet joint (13) and the bottom wall (12) of the upper end cover, and hydrogen enters the first valve cavity (7) through the air inlet pipe (14); an upper end cover inner column (16) is arranged on the inner wall of the bottom wall (12) of the upper end cover, a balance hole (17) is formed in the upper end cover inner column (16), and the balance hole (17) is communicated with the first valve cavity (7) and the outside; an upper valve core (3) is further arranged on the upper end cover inner column (16), an upper valve core spring (32) is arranged between the upper valve core (3) and the upper end cover bottom wall (12), and the upper valve core spring (32) applies acting force moving rightwards to the upper valve core (3); the snapping valve also comprises a lower end cover (6) and a lower valve body (4), wherein a second valve cavity (8) is arranged in the lower end cover; the outer wall of the lower end cover (6) is connected with the inner wall of the lower valve body (4); the lower valve body (4) comprises a lower valve body outer column (41), an inner channel (43) is arranged in the lower valve body outer column (41), and one side, close to the lower end cover (1), of the inner channel (43) is opened to form an opening; the lower end cover (1) comprises an air outlet joint (61) connected with the hydrogenation gun, an air outlet pipe (62) is arranged in the air outlet joint (61), and hydrogen in the second valve cavity (8) enters the hydrogenation gun through the air outlet pipe (62); the lower valve body (4) comprises a lower valve body convex step (45) formed by concave inward, a lower valve core spring seat (53) is arranged on the lower valve body convex step (45), a lower valve core (5) is arranged on the lower valve core spring seat (53), and a lower valve core spring (54) is arranged between the lower valve core spring seat (53) and the lower valve core (5); a valve body air outlet hole (55) is formed in the spring seat (53), and hydrogen in the second valve cavity (8) can enter the air outlet pipe (62) through the valve body air outlet hole (55); the upper valve body (2) is provided with a matching hole (21) for allowing the outer column of the lower valve body (4) to enter the first valve cavity (7), the inner wall of the matching hole (21) and the outer wall of the matching hole (21) for the outer column (41) of the lower valve body are sealed, the end face of the outer column (41) of the lower valve body is contacted with the upper valve core (3), and the outer column (41) of the lower valve body is provided with a valve body air inlet (42) so that the inner channel (43) is communicated with the first valve cavity (7); the elastic blocking mechanism (9) is arranged between the lower valve body (4) and the upper valve body (2); the elastic blocking mechanism (9) comprises a sleeve (92) which is blocked on the outer wall of the lower valve body (4); a steel ball (93) is arranged in the sleeve (92), and a lower valve body groove (31) clamped by the steel ball (93) is arranged on the outer wall of the lower valve body (4); a main spring seat (91) is arranged on the outer wall of the sleeve (92), the main spring seat (91) is L-shaped and is connected with the upper valve body (2), and a main spring (94) is arranged between the sleeve (92) and the main spring seat (91); a second limiting groove (912) is formed in the inner wall of the main spring seat (91), and the second limiting groove (912) is formed in the direction, close to the main spring (94), of the steel ball (93); when the lower valve body (4) is separated from the upper valve body (2), the sleeve (92) and the lower valve body (4) move rightwards together and compress the main spring (94) until the steel ball (93) reaches the second limiting groove (912) and is pushed into the second limiting groove (912), the lower valve body (4) is not clamped by the steel ball, the sliding groove (101) is located on the outer side of the sleeve (92), the long rod (102) is fixed on the sleeve (92) and penetrates through the sliding groove (101), the sleeve (92) can drive the long rod (102) to move when moving, the tension meter spring (103) is further driven to move, and an alarm can be given when the spring moves beyond a preset value.

4. A stretch break valve with a tensile force warning device according to claim 3, wherein: a first cover (33) is formed on the outer side wall of the upper valve core (3), a first convex step (22) is arranged on the inner wall of the upper valve body (2), when the upper valve body (2) is clamped with the lower valve body (4), a gap is formed between the first cover (33) and the first convex step (22), hydrogen enters the valve body air inlet hole (42) from the gap, when the upper valve body (2) is separated from the lower valve body (4), the upper valve core (3) moves rightwards under the action of an upper valve core spring (32), and the first cover (33) is jointed and sealed with the first convex step (22); the lateral wall of lower valve core (5) forms second front cover (51) and lower valve core sealing face (52), the inner wall of lower valve body (4) is equipped with second protruding rank (44), and when first valve pocket (7) pressure was greater than second valve pocket (8), second front cover (51) and second protruding rank (44) between form the clearance, and hydrogen gets into second valve pocket (8) from first valve pocket (7), and when first valve pocket (7) pressure was not more than second valve pocket (8), the laminating was sealed between second front cover (51) and second protruding rank (44), and the opening of lower valve core sealing face (51) laminating sealed inner passage (43).

5. A stretch break valve with a tensile force warning device according to claim 3, wherein: the main spring seat (91) is further provided with a first limiting groove (911), and the first limiting groove (911) is arranged in the direction, away from the main spring (94), of the steel ball (93).

6. A stretch break valve with a tensile force warning device according to claim 3, wherein: the breaking valve further comprises a sealing structure; the sealing structure comprises a sealing structure, a sealing structure and a sealing structure, wherein the sealing structure is arranged between an upper end cover (1) and an upper valve core (3), between the upper valve core (3) and an upper valve body (2), between the upper valve core (3) and a lower valve body (4), between the lower valve body (4) and a matching hole (21), between the lower valve body (4) and a lower valve core (5), and between a lower end cover (6) and the lower valve body (4); the sealing structure comprises an O-shaped sealing ring (10), and the outer side wall of the O-shaped sealing ring (10) forms a sealing surface.

7. The snapping valve having a pulling force warning device of claim 6, wherein: the sealing structure further comprises sealing check rings which are arranged between the upper end cover (1) and the upper valve core (3) and between the upper valve core (3) and the lower valve body (4).

8. A stretch break valve with a tensile force warning device according to claim 3, wherein: the upper valve core (3) is provided with a retaining ring (34) extending towards the upper end cover (1), and the retaining ring (34) fixes the upper valve core spring (32) and limits the maximum compression range of the upper valve core spring (32).

9. A stretch break valve with a tensile force warning device according to claim 3, wherein: an inclined plane (15) is formed between the outer wall of the bottom wall (12) of the upper end cover and the air inlet joint (13), and the air inlet pipe (14) is arranged along the inclined plane (15).

10. A stretch break valve with a tensile force warning device according to claim 3, wherein: the upper end cover (1) is in threaded connection with the upper valve body (2), the lower end cover (6) is in threaded connection with the lower valve body (4), and the upper valve body (2) is in threaded connection with the elastic blocking mechanism (9).