Crane pipe emergency snap valve convenient to maintain

Abstract

The utility model relates to the technical field of loading arm snap valves, and discloses a loading arm emergency snap valve convenient to maintain. Comprising a first valve body, a second valve body, a female valve clack, a male valve clack, a first sealing structure, a second sealing structure and a breaking control mechanism, a flange structure is arranged at one end of the first valve body, the first sealing structure is detachably arranged at the other end of the first valve body, and the male valve clack is arranged in the first valve body and moves along the first valve body; a flange structure is arranged at one end of the second valve body, a second sealing structure is detachably arranged at the other end of the second valve body, the female valve clack is arranged in the second valve body and moves along the second valve body, the first sealing structure is matched with the second sealing structure, and the first sealing structure and the second sealing structure are both in a step shape. A sealing layer and a leakage detection mechanism are arranged between the first sealing structure and the second sealing structure, and the snapping control mechanism is arranged at the joint of the first sealing structure and the second sealing structure in a sleeving mode. The breaking valve has the advantage of being convenient to maintain.

Description

Technical Field

[0001] This utility model relates to the field of loading arm breakaway valve technology, and in particular to an easy-to-maintain emergency breakaway valve for loading arms. Background Technology

[0002] A breakaway valve (emergency disconnect device) prevents leaks caused by accidental pipeline rupture. It is applicable in areas such as ship-to-shore unloading, tank loading and unloading on highways and railways, and other stationary and mobile fluid storage devices, such as loading arms, fluid transfer arms, and their connections to transport vehicles. This device acts as a weak connection point in the entire transmission chain; it disconnects the pipeline when set conditions are met, while the intermediate medium remains self-sealed within the pipeline.

[0003] Existing breakaway valves can be reused after the breakaway pin is replaced. However, after one breakage, the connection of the breakaway valve will be deformed due to impact, which will lead to a decrease in sealing performance. At the same time, there is a lack of a structure that can monitor the sealing performance of the breakaway valve, and daily maintenance and disassembly are relatively cumbersome.

[0004] Therefore, an easy-to-maintain emergency disconnect valve for loading arms is provided to solve the above problems. Utility Model Content

[0005] The main purpose of this utility model is to solve the problem that existing breakaway valves can be reused after the breakaway pin is replaced, but after one breakage, the connection of the breakaway valve will be deformed due to impact, resulting in a decrease in sealing performance. At the same time, there is a lack of a structure that can monitor the sealing performance of the breakaway valve, and daily maintenance and disassembly are relatively cumbersome.

[0006] This utility model provides an easy-to-maintain emergency disconnect valve for loading arms, the easy-to-maintain emergency disconnect valve comprising:

[0007] The system comprises a first valve body, a second valve body, a female valve disc, a male valve disc, a first sealing structure, a second sealing structure, and a pull-off control mechanism. One end of the first valve body has a flange structure, and the other end of the first valve body has a detachable first sealing structure. The male valve disc is disposed within the first valve body and moves along it. One end of the second valve body has a flange structure, and the other end of the second valve body has a detachable second sealing structure. The female valve disc is disposed within the second valve body and moves along it. The first sealing structure and the second sealing structure cooperate with each other. Both the first and second sealing structures are stepped. A sealing layer and a leakage detection mechanism are disposed between the first and second sealing structures. The pull-off control mechanism is sleeved at the connection between the first and second sealing structures.

[0008] Furthermore, the first sealing structure has a first mounting hole at the end away from the second sealing structure, and a first thread is provided on the side wall of the first mounting hole. The first valve body is provided with a first fixing thread in cooperation with the first thread. The first fixing thread and the first thread are used for detachable connection between the first sealing structure and the first valve body.

[0009] Furthermore, the second sealing structure has a second mounting hole at the end away from the first sealing structure, and a second thread is provided on the side wall of the second mounting hole. The second valve body is provided with a second fixing thread in cooperation with the second thread. The second fixing thread and the second thread are used for detachable connection between the second sealing structure and the second valve body.

[0010] Furthermore, the sealing layer includes a first sealing ring and a second sealing ring, which are disposed between two stepped surfaces facing each other in the first sealing structure and the second sealing structure.

[0011] Furthermore, the leakage detection mechanism is a patch pressure sensor, which is disposed between the sealing ring and the second sealing structure.

[0012] Furthermore, a first bracket is provided inside the first valve body, which is used to support the male valve disc, and a first spring is sleeved on the male valve disc.

[0013] Furthermore, a second bracket is provided inside the second valve body, which is used to support the female valve flap, and a second spring is sleeved on the female valve flap.

[0014] Furthermore, the pull-off control mechanism includes a first clamping plate, a second clamping plate, and a connecting member. The first clamping plate and the second clamping plate are rotatably connected by the connecting member. Both the upper ends of the first clamping plate and the second clamping plate are provided with connecting end blocks. The mechanism also includes an adjusting bolt, which is used to connect the connecting end blocks at the upper ends of the first clamping plate and the connecting end blocks at the upper ends of the second clamping plate. An adjusting nut is provided on the adjusting bolt. A pin hole is laterally opened on the connecting end block away from the adjusting nut. A pull-off pin is provided in the pin hole. A safety bolt is provided on one end of the pull-off pin. The other end of the pull-off pin is fixedly connected to the pull-off rope.

[0015] This utility model proposes a modular design of a first sealing structure and a second sealing structure. This ensures that the original function is maintained while allowing for quick replacement in case of leakage in the breakaway valve, thus improving sealing performance. In addition, a patch-type pressure sensor is used to measure the sealing performance between the first and second sealing structures. When the pressure decreases, it indicates that the sealing performance between the two structures has decreased, facilitating daily monitoring and maintenance of the breakaway valve. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of the present invention;

[0017] Figure 2 This is a cross-sectional view of the first valve body of this utility model after it has been broken.

[0018] Figure 3 This is a cross-sectional view of the second valve body of this utility model after it has been broken.

[0019] Figure 4 This is a schematic diagram of the first sealing structure and the second sealing structure of this utility model;

[0020] Figure 5 This is a top view of the present invention. Detailed Implementation

[0021] This utility model embodiment provides an easy-to-maintain emergency break-off valve for loading arms, including a first valve body, a second valve body, a female valve disc, a male valve disc, a first sealing structure, a second sealing structure, and a break-off control mechanism. One end of the first valve body is provided with a flange structure, and the other end of the first valve body is detachably provided with the first sealing structure. The male valve disc is disposed within the first valve body and moves along the first valve body. One end of the second valve body is provided with a flange structure, and the other end of the second valve body is detachably provided with the second sealing structure. The female valve disc is disposed within the second valve body and moves along the second valve body. The first sealing structure and... The second sealing structure cooperates with the first sealing structure and the second sealing structure, both of which are stepped. A sealing layer and a leakage detection mechanism are provided between the first sealing structure and the second sealing structure. The pull-off control mechanism is sleeved at the connection between the first sealing structure and the second sealing structure. The main purpose of this utility model is to solve the problem that existing pull-off valves can be reused after the pull-off pin is replaced, but after one pull-off, the connection of the pull-off valve will be deformed due to impact, resulting in a decrease in sealing performance. At the same time, there is a lack of a structure that can monitor the sealing performance of the pull-off valve, and the daily maintenance and disassembly are relatively cumbersome.

[0022] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in a sequence other than that illustrated or described herein. Furthermore, the terms "comprising" or "having" and any variations thereof are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0023] Example

[0024] refer to Figure 1-5 This embodiment provides an easy-to-maintain emergency disconnect valve for loading arms, which includes:

[0025] The system comprises a first valve body 1, a second valve body 7, a female valve disc 5, a male valve disc 2, a first sealing structure 14, a second sealing structure 15, and a pull-off control mechanism. One end of the first valve body 1 is provided with a flange structure, and the other end of the first valve body 1 is detachably provided with a first sealing structure. The male valve disc 2 is located inside the first valve body 1 and moves along it. One end of the second valve body 7 is provided with a flange structure, and the other end of the second valve body 7 is detachably provided with a second sealing structure. The female valve disc 5 is located inside the second valve body 7 and moves along it. The first sealing structure 14 and the second sealing structure 15 cooperate with each other, and both the first sealing structure 14 and the second sealing structure 15 are stepped. A sealing layer and a leakage detection mechanism are provided between the first sealing structure and the second sealing structure. The pull-off control mechanism is sleeved at the connection between the first sealing structure 14 and the second sealing structure 15.

[0026] The first sealing structure 14 has a first mounting hole at the end away from the second sealing structure 15. A first thread is provided on the side wall of the first mounting hole. The first valve body 1 is provided with a first fixing thread in cooperation with the first thread. The first fixing thread and the first thread are used for detachable connection between the first sealing structure 14 and the first valve body 1.

[0027] The second sealing structure 15 has a second mounting hole at the end away from the first sealing structure 14. A second thread is provided on the side wall of the second mounting hole. The second valve body 7 is provided with a second fixing thread in cooperation with the second thread. The second fixing thread and the second thread are used for detachable connection between the second sealing structure 15 and the second valve body 7.

[0028] The sealing layer includes a first sealing ring and a second sealing ring 16, which are disposed between two stepped surfaces facing each other in the first sealing structure and the second sealing structure 15.

[0029] The leakage detection mechanism is a patch pressure sensor 13, which is disposed between the sealing ring and the second sealing structure 15.

[0030] The first valve body 1 is provided with a first bracket 3, which is used to support the male valve disc 2. The male valve disc 2 is fitted with a first spring 4.

[0031] The second valve body 7 is provided with a second bracket, which is used to support the female valve disc 5. The female valve disc 5 is fitted with a second spring 6.

[0032] The pull-off control mechanism includes a first clamping plate, a second clamping plate 9, and a connector 8. The first clamping plate and the second clamping plate 9 are rotatably connected by the connector 8. Both the first clamping plate and the second clamping plate 9 are provided with connecting end blocks at their upper ends. The mechanism also includes an adjusting bolt 17, which is used to connect the connecting end blocks at the upper end of the first clamping plate and the connecting end blocks at the upper end of the second clamping plate 9. The adjusting bolt 17 is provided with an adjusting nut 10. A pin hole is opened laterally on the connecting end block away from the adjusting nut 10. A pull-off pin 11 is provided in the pin hole. A safety bolt 12 is provided on one end of the pull-off pin 11. The other end of the pull-off pin 11 is fixedly connected to the pull-off rope.

[0033] During use, the patch pressure sensor can be connected to an external microcontroller and displayed on an LCD screen. This LCD screen can be mounted on the second valve body, and the wiring can be arranged without affecting the pull-off control structure. Since the first and second sealing structures are set in a stepped shape, the sealing performance can be improved. Furthermore, both the first and second sealing structures are connected to the valve body via threads. Even if the stepped structure of the first and second sealing mechanisms deforms after being pulled off, they can be quickly replaced. The structure is simple and easy to maintain.

[0034] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An easy-to-maintain emergency disconnect valve for loading arms, characterized in that, include: The system comprises a first valve body, a second valve body, a female valve disc, a male valve disc, a first sealing structure, a second sealing structure, and a pull-off control mechanism. One end of the first valve body has a flange structure, and the other end of the first valve body has a detachable first sealing structure. The male valve disc is disposed within the first valve body and moves along it. One end of the second valve body has a flange structure, and the other end of the second valve body has a detachable second sealing structure. The female valve disc is disposed within the second valve body and moves along it. The first sealing structure and the second sealing structure cooperate with each other. Both the first and second sealing structures are stepped. A sealing layer and a leakage detection mechanism are disposed between the first and second sealing structures. The pull-off control mechanism is sleeved at the connection between the first and second sealing structures.

2. The easy-to-maintain emergency disconnect valve for loading arms according to claim 1, characterized in that, The first sealing structure has a first mounting hole at the end away from the second sealing structure. A first thread is provided on the side wall of the first mounting hole. The first valve body is provided with a first fixing thread in cooperation with the first thread. The first fixing thread and the first thread are used for detachable connection between the first sealing structure and the first valve body.

3. The easy-to-maintain emergency disconnect valve for loading arms according to claim 2, characterized in that, The second sealing structure has a second mounting hole at the end away from the first sealing structure. A second thread is provided on the side wall of the second mounting hole. The second valve body is provided with a second fixing thread in cooperation with the second thread. The second fixing thread and the second thread are used for detachable connection between the second sealing structure and the second valve body.

4. The easy-to-maintain emergency disconnect valve for loading arms according to claim 3, characterized in that, The sealing layer includes a first sealing ring and a second sealing ring, which are disposed between two stepped surfaces facing each other in the first sealing structure and the second sealing structure.

5. The easy-to-maintain emergency disconnect valve for loading arms according to claim 4, characterized in that, The leakage detection mechanism is a patch pressure sensor, which is disposed between the sealing ring and the second sealing structure.

6. The easy-to-maintain emergency disconnect valve for loading arms according to claim 5, characterized in that, The first valve body is provided with a first bracket, which is used to support the male valve disc, and a first spring is sleeved on the male valve disc.

7. The easy-to-maintain emergency disconnect valve for loading arms according to claim 6, characterized in that, The second valve body is provided with a second bracket, which is used to support the female valve disc, and a second spring is sleeved on the female valve disc.

8. The easy-to-maintain emergency disconnect valve for loading arms according to claim 7, characterized in that, The pull-off control mechanism includes a first clamping plate, a second clamping plate, and a connecting member. The first clamping plate and the second clamping plate are rotatably connected by the connecting member. Both the upper ends of the first clamping plate and the second clamping plate are provided with connecting end blocks. The mechanism also includes an adjusting bolt, which is used to connect the connecting end blocks at the upper ends of the first clamping plate and the second clamping plate. An adjusting nut is provided on the adjusting bolt. A pin hole is opened laterally on the connecting end block away from the adjusting nut. A pull-off pin is provided in the pin hole. A safety bolt is provided on one end of the pull-off pin. The other end of the pull-off pin is fixedly connected to the pull-off rope.

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