Breaking valve
By introducing a self-sealing component into the breakaway valve, the problem of gas leakage in the outlet section is solved, achieving self-sealing in emergency situations to ensure safety, while maintaining gas flow during normal use.
Patent Information
- Application Number
- CN202423055036.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-11
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-12-11
AI Technical Summary
When the existing breakaway valve is disconnected into two sections in an emergency, the gas in the outlet section will still leak, posing a safety hazard.
Design a breakaway valve comprising a self-sealing component, including an outlet valve core and an outlet spring. The inner wall of the outlet is provided with a retaining ring and a first valve seat. When the inlet connecting pipe is separated from the outlet connecting pipe, the self-sealing component blocks the outlet, achieving self-sealing. When the inlet connecting pipe and the outlet connecting pipe are in a sealed fit, the self-sealing component opens the outlet.
In case of emergency detachment, the outlet connection pipe achieves self-sealing through a self-sealing component to prevent gas leakage and ensure better safety performance, while allowing gas to flow smoothly during normal operation.
Smart Images
Figure CN223578991U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to valve technical field especially is related to a pull apart valve. BACKGROUND
[0002] The pull apart valve (emergency disconnect device) can prevent leakage accidents caused by accidental rupture of the pipeline, and is suitable for fields such as ship-to-shore unloading, tank loading and unloading on highways and railways, and other fixed and mobile fluid storage devices, such as the connection between the crane pipe and the fluid conveying arm and the transport carrier. The device is a weak connection point in the entire transmission link, and when the set condition is reached, the pipeline connection is disconnected, and the intermediate medium is self-sealed in the pipeline.
[0003] The pull apart valve also needs to be installed on the LPG dispenser to prevent leakage. Because the automobile often forgets to insert the gas gun into the automobile when refueling, and directly drives away, causing the gas gun to be pulled off, so a pull apart valve is generally installed between the gas dispenser and the gas gun. The pull apart valve will be disconnected into two sections under the action of a certain force, reducing gas leakage.
[0004] The pull apart valve of the prior art only seals the inlet section when it is disconnected into two sections, and the gas in the outlet section still leaks, which has certain safety hazards. UTILITY MODEL CONTENTS
[0005] The utility model discloses a pull apart valve which overcomes the shortcomings and deficiencies of the prior art. When the pull apart valve of the utility model is disconnected into two sections, the outlet section is self-sealed by a self-sealing assembly, and both sections can timely prevent gas leakage, having the advantage of better safety performance.
[0006] The technical scheme adopted by the utility model is as follows: a pull apart valve comprises a valve body, an inlet pipe and an outlet pipe, an inlet hole is formed in the inlet pipe, an outlet hole is formed in the outlet pipe, the inlet pipe and the outlet pipe are respectively inserted into the valve body from both ends to seal and cooperate, and the inlet hole and the outlet hole are connected, the outlet pipe is provided with a self-sealing assembly for blocking or conducting the outlet hole, the self-sealing assembly conducts the outlet hole when the inlet pipe and the outlet pipe are sealed and cooperated, and the self-sealing assembly blocks the outlet hole when the inlet pipe and the outlet pipe are separated.
[0007] The self-sealing assembly comprises an outlet valve core and an outlet spring, a retaining ring and a first valve seat in sealing cooperation with the outlet valve core are arranged on the inner wall of the outlet hole, one end of the outlet spring abuts against the outlet valve core and the other end abuts against the retaining ring, the outlet valve core is away from the first valve seat when the inlet pipe and the outlet pipe are sealed and cooperated, and the outlet valve core is close to the first valve seat when the inlet pipe and the outlet pipe are separated.
[0008] The self-sealing assembly further comprises a first sealing ring arranged on the end face of the outlet valve core close to the first valve seat, and the first sealing ring abuts against the first valve seat when the outlet valve core is in sealing cooperation with the first valve seat.
[0009] The inlet connecting pipe is fixedly connected with the valve body through an explosion-proof thread, the valve body is internally provided with a sealing valve core and an inlet spring, the inlet connecting pipe is in plug-in cooperation with the sealing valve core, one end of the inlet spring abuts against the inlet connecting pipe and the other end abuts against the sealing valve core, the sealing valve core is externally provided with a second sealing ring, and the inner wall of the valve body is provided with a second valve seat, the sealing valve core is in sealing cooperation with the second valve seat through the second sealing ring when the inlet connecting pipe and the outlet connecting pipe are separated, and the inlet hole is blocked.
[0010] The outlet connecting pipe is also in plug-in cooperation with the sealing valve core, and the outlet connecting pipe drives the sealing valve core to move away from the second valve seat when the inlet connecting pipe and the outlet connecting pipe are in sealing cooperation, and the inlet hole is communicated with the outlet hole.
[0011] Star-shaped sealing rings are arranged between the inlet connecting pipe and the outlet connecting pipe and the sealing valve core, and a star-shaped sealing ring is also arranged between the outlet connecting pipe and the valve body.
[0012] A finger spring is arranged between the outlet connecting pipe and the valve body, the inner wall of the valve body is provided with a groove for mounting the finger spring, and the outer wall of the outlet connecting pipe is provided with an annular groove for abutting against the finger spring.
[0013] The inlet connecting pipe is further provided with an exhaust hole, one end of the exhaust hole is communicated with the outside of the valve body and the other end is communicated with the inside of the sealing valve core.
[0014] The valve body, the inlet connecting pipe and the outlet connecting pipe are made of copper alloy.
[0015] The beneficial effects of the utility model are as follows: when the pull-off valve is separated into two sections, the outlet connecting pipe is blocked from the outlet hole through the self-sealing assembly to realize self-sealing, the inlet connecting pipe and the outlet connecting pipe can prevent gas leakage in time, and the pull-off valve has the advantages of better safety performance, and when the inlet connecting pipe and the outlet connecting pipe are in sealing cooperation, the self-sealing assembly is conducted through the outlet hole under the action of gas pressure, and normal circulation of gas is realized. BRIEF DESCRIPTION OF DRAWINGS
[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description, obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without creative labor.
[0017] Figure 1 It is a structure schematic diagram of the present application pull-off valve;
[0018] Figure 2 It is a structure schematic diagram of the present application pull-off valve;
[0019] Figure 3 It is a structure schematic diagram of the present application pull-off valve;
[0020] Figure 4 It is a structure schematic diagram of the present application pull-off valve;
[0021] Figure 5 It is a structure schematic diagram of the present application pull-off valve;
[0022] In the figure, 1-valve body, 2-gas inlet connecting pipe, 3-gas outlet connecting pipe, 4-gas inlet hole, 5-gas outlet hole, 6-gas outlet valve core, 7-gas outlet spring, 8-retainer ring, 9-first valve seat, 10-first sealing ring, 11-explosion-proof thread, 12-sealing valve core, 13-gas inlet spring, 14-second sealing ring, 15-second valve seat, 16-star-shaped sealing ring, 17-touch finger spring, 18-groove, 19-ring groove, 20-exhaust hole. DETAILED DESCRIPTION
[0023] In order to make the purpose, technical scheme and advantages of the present application more clear, the following will make further detailed description to the present application combined with the drawings.
[0024] It should be noted that all the expressions of "first" and "second" in the embodiments of the present application are used to distinguish two same name but different entities or different parameters, and it can be seen that "first" and "second" are only used for convenient expression, and should not be understood as the limitation of the embodiments of the present application, and the subsequent embodiments will not be described one by one.
[0025] The directions and positions mentioned in the present application, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side" and the like, are only the directions or positions of the drawings. Therefore, the directions and positions used are used to illustrate and understand the present application, and are not limited to the protection scope of the present application.
[0026] As Figures 1 to 5 shown, for an embodiment of the utility model, the pull-off valve, including valve body 1, air inlet connecting pipe 2 and air outlet connecting pipe 3, the air inlet connecting pipe 2 inside is set with air inlet hole 4, the air outlet connecting pipe 3 inside is set with air outlet hole 5, the air inlet connecting pipe 2 and air outlet connecting pipe 3 are sealed and fit respectively from both ends and go into the valve body 1 inside and realize the intercommunication of air inlet hole 4 and air outlet hole 5, the air outlet connecting pipe 3 is equipped with the self-sealing assembly for blocking or conducting air outlet hole 5, when the air inlet connecting pipe 2 and air outlet connecting pipe 3 sealed fit, the self-sealing assembly conducts air outlet hole 5, when the air inlet connecting pipe 2 and air outlet connecting pipe 3 separate, the self-sealing assembly blocks air outlet hole 5.
[0027] The beneficial effects of such arrangement are as follows, when the pull-off valve separates into two sections, namely the air inlet connecting pipe and air outlet connecting pipe separate, the air outlet connecting pipe blocks air outlet hole to realize self-sealing through the self-sealing assembly, the air inlet connecting pipe and air outlet connecting pipe can timely prevent gas leakage, having the advantage of better safety performance, and when the air inlet connecting pipe and air outlet connecting pipe are sealed and fit, the self-sealing assembly conducts air outlet hole under the action of air pressure, realizing normal circulation of gas. The air inlet connecting pipe and air outlet connecting pipe are used for connecting with LPG dispenser and gas filling gun respectively.
[0028] Further arrangement, the self-sealing assembly includes air outlet valve core 6 and air outlet spring 7, the inner wall of air outlet hole 5 is provided with check ring 8 and first valve seat 9 sealed and fit with air outlet valve core 6, one end of air outlet spring 7 abuts against air outlet valve core 6 and the other end abuts against check ring 8, when the air inlet connecting pipe 2 and air outlet connecting pipe 3 are sealed and fit, the air outlet valve core 6 is away from first valve seat 9, when the air inlet connecting pipe 2 and air outlet connecting pipe 3 separate, the air outlet valve core 6 is close to first valve seat 9.
[0029] The beneficial effects of such arrangement are as follows, when the air inlet connecting pipe and air outlet connecting pipe separate, the air outlet valve core abuts against first valve seat under the elastic action of air outlet spring, realizing the blocking of air outlet hole, the check ring is fixed in the inner wall of air outlet hole for limiting air outlet spring, when the air inlet connecting pipe and air outlet connecting pipe are sealed and fit, the airflow in air inlet hole flows to air outlet hole, the air pressure gradually rises to be greater than the elastic force of air outlet spring, the air outlet valve core will separate from first valve seat, realizing the conducting of air outlet hole, this structure has the advantages of simple structure, good sealing property and sensitive activity.
[0030] Further, the self-sealing assembly further comprises a first sealing ring 10 arranged on the end face of the outlet valve core 6 close to the first valve seat 9, and the first sealing ring 10 abuts against the first valve seat 9 when the outlet valve core 6 is in sealing cooperation with the first valve seat 9.
[0031] The beneficial effects of such an arrangement are as follows: when the outlet valve core is in sealing cooperation with the first valve seat, the elastic sealing between the two is realized through the first sealing ring, which not only has a better sealing effect, but also reduces the wear caused by repeated contact between the outlet valve core and the first valve seat.
[0032] Further, the inlet connecting pipe 2 is fixedly connected with the valve body 1 through an explosion-proof thread 11, the valve body 1 is internally provided with a sealing valve core 12 and an inlet spring 13, the inlet connecting pipe 2 is in plug-in cooperation with the sealing valve core 12, one end of the inlet spring 13 abuts against the inlet connecting pipe 2 and the other end abuts against the sealing valve core 12, the sealing valve core 12 is externally provided with a second sealing ring 14, and the inner wall of the valve body 1 is provided with a second valve seat 15, and the sealing valve core 12 forms sealing cooperation with the second valve seat 15 through the second sealing ring 14 when the inlet connecting pipe 2 and the outlet connecting pipe 3 are separated, thereby blocking the inlet hole 4.
[0033] The beneficial effects of such an arrangement are as follows: the sealing valve core is relatively movable with the inlet connecting pipe under the elastic force of the inlet spring, that is, it is pressed towards the second valve seat, and when the inlet connecting pipe and the outlet connecting pipe are separated, the sealing valve core forms sealing cooperation with the second valve seat through the second sealing ring, thereby blocking the inlet hole, that is, realizing self-sealing of the inlet hole.
[0034] Further, the outlet connecting pipe 3 is also in plug-in cooperation with the sealing valve core 12, and when the inlet connecting pipe 2 and the outlet connecting pipe 3 are in sealing cooperation, the outlet connecting pipe 3 drives the sealing valve core 12 away from the second valve seat 15, and the inlet hole 4 is in communication with the outlet hole 5.
[0035] The beneficial effects of such an arrangement are as follows: when the outlet connecting pipe is inserted into the valve body, the outlet connecting pipe pushes the sealing valve core to move away from the second valve seat, thereby realizing communication of the inlet hole, and when the outlet connecting pipe is pulled out, the sealing valve core can be reset to realize self-sealing of the inlet hole, which has the advantage of flexible opening and closing.
[0036] Further, star-shaped sealing rings 16 are arranged between the inlet connecting pipe 2 and the outlet connecting pipe 3 and the sealing valve core 12, and star-shaped sealing rings 16 are also arranged between the outlet connecting pipe 3 and the valve body 1.
[0037] The beneficial effects of the arrangement are as follows: the star-shaped sealing ring has recesses around the periphery, that is, the cross section is X-shaped, the sealing ring of this structure can prevent the flanging caused by the influence of two relative sliding objects, the star-shaped sealing ring is installed at three structures that need to slide relative to each other, good sealing performance is ensured, and the flanging failure of the sealing ring is avoided.
[0038] Further arrangement, the air outlet connecting pipe 3 and the valve body 1 are provided with a finger spring 17, the inner wall of the valve body 1 is provided with a groove 18 for installing the finger spring 17, and the outer wall of the air outlet connecting pipe 3 is provided with a ring groove 19 for abutting the finger spring 17.
[0039] The beneficial effects of the arrangement are as follows: the finger spring is also called spring finger or inclined surface spring, which can provide circumferential holding force, the valve body installs the outlet connecting pipe in a specific position through the finger spring, so that the outlet connecting pipe is connected more stably, the stability of the overall structure is improved, and stable work of the pull-off valve is ensured.
[0040] Further arrangement, the air inlet connecting pipe 2 is also provided with an exhaust hole 20, one end of the exhaust hole 20 is communicated with the outside of the valve body 1 and the other end is communicated with the inside of the sealing valve core 12.
[0041] The beneficial effects of the arrangement are as follows: when the air outlet connecting pipe extends into the valve body and pushes the sealing valve core to move, the exhaust hole is used for exhaust, so that the resistance caused by gas compression is prevented, and the installation is not in place.
[0042] Further arrangement, the valve body 1, the air inlet connecting pipe 2 and the air outlet connecting pipe 3 are made of copper alloy.
[0043] The beneficial effects of the arrangement are as follows: the copper alloy has good electrical conductivity.
[0044] The above disclosure is only the preferred embodiment of the utility model, and of course cannot limit the scope of the utility model, therefore, the equivalent changes made according to the utility model claims still belong to the scope covered by the utility model.
Claims
1. A breakaway valve, comprising a valve body (1), an inlet connecting pipe (2), and an outlet connecting pipe (3), characterized in that: The inlet connecting pipe (2) has an inlet hole (4) inside, and the outlet connecting pipe (3) has an outlet hole (5) inside. The inlet connecting pipe (2) and the outlet connecting pipe (3) extend into the valve body (1) from both ends to form a sealing fit, and realize the connection between the inlet hole (4) and the outlet hole (5). The outlet connecting pipe (3) is provided with a self-sealing component for blocking or opening the outlet hole (5). When the inlet connecting pipe (2) and the outlet connecting pipe (3) are sealed together, the self-sealing component opens the outlet hole (5). When the inlet connecting pipe (2) and the outlet connecting pipe (3) are separated, the self-sealing component blocks the outlet hole (5). The air inlet connecting pipe (2) is fixedly connected to the valve body (1) through an explosion-proof thread (11). The valve body (1) is provided with a sealing valve core (12) and an air inlet spring (13). The air inlet connecting pipe (2) and the sealing valve core (12) are inserted into each other. One end of the air inlet spring (13) abuts against the air inlet connecting pipe (2) and the other end abuts against the sealing valve core (12). The sealing valve core (12) is covered with a second sealing ring (14). The valve body (1) is provided with a second valve seat (15) on its inner wall. When the air inlet connecting pipe (2) and the air outlet connecting pipe (3) are separated, the sealing valve core (12) forms a sealing fit with the second valve seat (15) through the second sealing ring (14) and blocks the air inlet hole (4). The outlet connecting pipe (3) is also inserted into the sealing valve core (12). When the inlet connecting pipe (2) and the outlet connecting pipe (3) are sealed together, the outlet connecting pipe (3) drives the sealing valve core (12) away from the second valve seat (15), and the inlet hole (4) and the outlet hole (5) are connected. A star-shaped sealing ring (16) is provided between the air inlet connecting pipe (2) and the air outlet connecting pipe (3) and the sealing valve core (12), and a star-shaped sealing ring (16) is also provided between the air outlet connecting pipe (3) and the valve body (1).
2. The breakaway valve according to claim 1, characterized in that: The self-sealing assembly includes an outlet valve core (6) and an outlet spring (7). The inner wall of the outlet hole (5) is provided with a retaining ring (8) and a first valve seat (9) that seals with the outlet valve core (6). One end of the outlet spring (7) abuts against the outlet valve core (6) and the other end abuts against the retaining ring (8). When the inlet connecting pipe (2) and the outlet connecting pipe (3) are sealed together, the outlet valve core (6) moves away from the first valve seat (9). When the inlet connecting pipe (2) and the outlet connecting pipe (3) are separated, the outlet valve core (6) moves closer to the first valve seat (9).
3. The breakaway valve according to claim 2, characterized in that: The self-sealing assembly also includes a first sealing ring (10) disposed on the end face of the outlet valve core (6) near the first valve seat (9). When the outlet valve core (6) and the first valve seat (9) are sealed together, the first sealing ring (10) abuts against the first valve seat (9).
4. The breakaway valve according to claim 1, characterized in that: A finger spring (17) is provided between the air outlet connecting pipe (3) and the valve body (1). The inner wall of the valve body (1) is provided with a groove (18) for the finger spring (17) to be installed. The outer wall of the air outlet connecting pipe (3) is provided with an annular groove (19) for the finger spring (17) to abut.
5. The breakaway valve according to claim 1, characterized in that: The air inlet connecting pipe (2) is also provided with an exhaust hole (20), one end of which is connected to the outside of the valve body (1) and the other end is connected to the inside of the sealing valve core (12).
6. The breakaway valve according to claim 1, characterized in that: The valve body (1), the inlet connecting pipe (2), and the outlet connecting pipe (3) are all made of copper alloy.