LNG (Liquefied Natural Gas) snap valve

Abstract

The utility model discloses an LNG break-away valve which comprises a first valve body, a second valve body, a connecting plate, a connecting shell and a blocking mechanism, the blocking mechanism comprises a supporting inner plate, a first sealing plug, a supporting spring, an abutting rod, a sealing sleeve plate and a sealing assembly, the supporting inner plate is connected to one end of the inner wall of the first valve body and one end of the inner wall of the second valve body in a sliding mode, and the supporting spring is connected to the abutting rod. The first sealing plug is fixedly connected to one side of the supporting inner plate, the sealing sleeve plate is fixedly connected to the middle ends of the inner walls of the first valve body and the second valve body, a plurality of supporting springs are arranged between one side of the sealing sleeve plate and the other side of the supporting inner plate, the sealing sleeve plate and the supporting inner plate are connected through the supporting springs, and one end of the abutting rod is fixedly connected to the end of the first sealing plug. Therefore, the problems that the working burden is increased, secondary accidents caused by improper cleaning are possibly caused, and the overall safety and the working efficiency are influenced due to the fact that the flowing-out liquid is accumulated on a leakage site and inconvenience is brought to subsequent cleaning and treatment are solved.

Description

Technical Field

[0001] This utility model relates to the field of breakaway valve technology, specifically an LNG breakaway valve. Background Technology

[0002] Liquefied natural gas (LNG) breakaway valves are important safety devices widely used in LNG transportation and storage to prevent safety hazards caused by liquid leakage in the event of pipeline rupture or accidental breakage at connections. However, existing LNG breakaway valves still have some significant problems in use.

[0003] First, after the valve is pulled off, the valve needs time to close and cannot be closed quickly, resulting in a certain amount of liquid flowing out. This increases safety risks and cleaning difficulties. The outflowing liquid will accumulate at the leak site, causing inconvenience to subsequent cleaning and treatment. This not only increases the workload but may also lead to secondary accidents caused by improper cleaning, thereby affecting overall safety and operational efficiency.

[0004] Therefore, this utility model provides an LNG breakaway valve. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, this utility model provides an LNG break-off valve to solve the above problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an LNG breakaway valve, comprising a first valve body, a second valve body, a connecting plate, a connecting housing, and a blocking mechanism. The first valve body and the second valve body are each fixedly connected to a connecting plate at their ends, and the connecting plates are each fixedly connected to a connecting housing at their ends. The two connecting housings are connected to each other by bolts. Two sets of blocking mechanisms are provided, respectively installed inside the first valve body and the second valve body. Each blocking mechanism includes a supporting inner plate, a first sealing plug, a supporting spring, an abutment rod, a sealing sleeve, and a sealing assembly. The supporting inner plate is slidably connected to one end of the inner wall of the first valve body and the second valve body. The first sealing plug is fixedly connected to one side of the supporting inner plate. The sealing sleeve is fixedly connected to the middle of the inner wall of the first valve body and the second valve body. Multiple supporting springs are provided between one side of the sealing sleeve and the other side of the supporting inner plate and connected through the supporting springs. One end of the abutment rod is fixedly connected to the end of the first sealing plug, and the sealing assembly is installed on the abutment rod.

[0007] Preferably, the sealing assembly includes a second sealing plug, a sealing head, and a sealing hole, wherein the second sealing plug is fixedly connected to the outer wall of the abutment rod, the sealing head is fixedly connected to the other end of the inner wall of the first valve body and the second valve body, and the sealing head has a sealing hole that matches the second sealing plug.

[0008] Preferably, the sidewall of the inner support plate is provided with a plurality of conveying holes in a circumferential array, and the sidewall of the sealing sleeve is provided with a guide hole that matches the first sealing plug.

[0009] Preferably, the other end of the abutment rod is fixedly connected to an abutment head.

[0010] Preferably, the connecting housing has a storage compartment inside, and a protective plug is installed on the outer wall of the connecting housing. Beneficial effects

[0011] Compared with the prior art, the present invention has the following advantages:

[0012] (1) In this utility model, after the first valve body and the second valve body are connected to each other by mutual contact, the two connecting shells are connected to each other by bolts, so that the ends of the two contact rods can be made to contact each other, thereby allowing the first sealing plug to move backward, and the guide hole on the sealing sleeve plate to be in the open state. At the same time, the sealing assembly opens synchronously, and then the main valve can be opened to realize the injection operation. When the two valve bodies are disconnected, under the action of the support spring, the first sealing plug can easily form a closure of the guide hole, and then the sealing assembly performs sealing operation synchronously to realize rapid closure.

[0013] (2) In this utility model, by connecting the storage chamber in the shell, the liquid at the overflow point can be collected through the storage chamber in the shell, which avoids the liquid from spilling on the ground. This prevents the liquid from accumulating at the leak site, which would cause inconvenience to subsequent cleaning and treatment. This not only increases the workload, but may also lead to secondary accidents caused by improper cleaning, thereby affecting the overall safety and work efficiency. Attached Figure Description

[0014] Figure 1 This is a perspective view of the present invention;

[0015] Figure 2 This is a schematic diagram of the internal structure of the first valve body of this utility model;

[0016] Figure 3 This is the utility model Figure 2 A magnified view of the structure at point A in the middle;

[0017] Figure 4 This is a schematic diagram of the storage compartment structure of this utility model.

[0018] In the figure: 1. First valve body; 2. Second valve body; 3. Connecting plate; 4. Connecting housing; 41. Storage compartment; 42. Protective plug; 5. Blocking mechanism; 51. Support inner plate; 511. Conveying hole; 52. First sealing plug; 53. Support spring; 54. Abutting rod; 541. Abutting head; 55. Sealing sleeve; 551. Guide hole; 56. Sealing assembly; 561. Second sealing plug; 562. Sealing head; 563. Sealing hole. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-4 An LNG breakaway valve includes a first valve body 1, a second valve body 2, a connecting plate 3, a connecting housing 4, and a blocking mechanism 5.

[0021] In this configuration, the ends of the first valve body 1 and the second valve body 2 are both fixedly connected to a connecting plate 3, and the ends of the connecting plate 3 are both fixedly connected to a connecting housing 4. The two connecting housings 4 are connected to each other by bolts.

[0022] It should be noted that the side walls of the connecting plate 3 and the connecting housing 4 described in this embodiment are provided with through holes that match the inner diameters of the first valve body 1 and the second valve body 2. At the same time, a fastening bolt is installed on the outer wall of one of the connecting housings 4, while a screw hole matching the fastening bolt is provided on the outer wall of the other connecting housing 4.

[0023] The blocking mechanism 5 is provided in two sets, which are respectively installed inside the first valve body 1 and the second valve body 2. The blocking mechanism 5 includes a supporting inner plate 51, a first sealing plug 52, a supporting spring 53, an abutment rod 54, a sealing sleeve 55, and a sealing assembly 56.

[0024] The inner support plate 51 is slidably connected to one end of the inner wall of the first valve body 1 and the second valve body 2. The first sealing plug 52 is fixedly connected to one side of the inner support plate 51. The sealing sleeve 55 is fixedly connected to the middle of the inner wall of the first valve body 1 and the second valve body 2. A plurality of supporting springs 53 are provided between one side of the sealing sleeve 55 and the other side of the inner support plate 51, and are connected to each other through the supporting springs 53.

[0025] Furthermore, such as Figure 1As shown, the sidewall of the inner support plate 51 is provided with multiple conveying holes 511 in a circumferential array, and the sidewall of the sealing sleeve plate 55 is provided with a guide hole 551 that matches the first sealing plug 52.

[0026] It should be noted that the multiple support springs 53 described in this embodiment are arranged in a circumferential array between one side of the sealing sleeve 55 and the other side of the support inner plate 51, and the two ends of the support springs 53 are respectively fixedly connected to one side of the sealing sleeve 55 and the other side of the support inner plate 51.

[0027] One end of the abutment rod 54 is fixedly connected to the end of the first sealing plug 52, and the sealing assembly 56 is mounted on the abutment rod 54.

[0028] Furthermore, such as Figure 2 As shown, the other end of the abutment rod 54 is fixedly connected to an abutment head 541.

[0029] It should be understood that a storage compartment 41 is provided inside the connecting housing 4, and a protective plug 42 is installed on the outer wall of the connecting housing 4.

[0030] Specifically, to ensure timely closure of the breakaway valve and prevent liquid spillage, connecting plates 3 are fixedly connected to the ends of both the first valve body 1 and the second valve body 2. Connecting housings 4 are fixedly connected to the ends of the connecting plates 3. The two connecting housings 4 are connected to each other by bolts. A supporting inner plate 51 is slidably connected to one end of the inner wall of the first valve body 1 and the second valve body 2. A first sealing plug 52 is fixedly connected to one side of the supporting inner plate 51. A sealing sleeve 55 is fixedly connected to the middle of the inner wall of the first valve body 1 and the second valve body 2. Multiple supporting springs 53 are provided between one side of the sealing sleeve 55 and the other side of the supporting inner plate 51, and are connected through the supporting springs 53. One end of an abutment rod 54 is fixedly connected to the end of the first sealing plug 52. A sealing assembly 56 is installed on the abutment rod 54. Therefore, when the first valve body 1 and the second valve body 2 abut against each other, the two valve bodies 1 and 2 are connected by bolts. The connecting housings 4 are interconnected, allowing the ends of the two contact rods 54 to abut against each other. This causes the first sealing plug 52 to move backward, opening the guide hole 551 on the sealing sleeve 55. Simultaneously, the sealing assembly 56 opens, allowing the main valve to be opened for injection. When the two valve bodies are disconnected, the first sealing plug 52 can easily close the guide hole 551 under the action of the support spring 53. Then, the sealing assembly 56 performs a sealing operation. The overflowing liquid can be collected through the storage chamber 41 in the connecting housing 4, preventing liquid from spilling onto the ground. This avoids the accumulation of leaked liquid at the leak site, which would cause inconvenience for subsequent cleanup and treatment. This not only increases the workload but may also lead to secondary accidents caused by improper cleanup, thus affecting overall safety and work efficiency.

[0031] In one embodiment of this utility model, such as Figures 1-4 As shown, the sealing assembly 56 includes a second sealing plug 561, a sealing head 562, and a sealing hole 563. The second sealing plug 561 is fixedly connected to the outer wall of the abutment rod 54, and the sealing head 562 is fixedly connected to the other end of the inner wall of the first valve body 1 and the second valve body 2. The sealing head 562 has a sealing hole 563 that matches the second sealing plug 561.

[0032] It should be noted that the second sealing plug 561 described in this embodiment has a conical structure, and the inner diameter of the sealing hole 563 is the same as the end diameter of the second sealing plug 561.

[0033] Specifically, in order to further ensure the sealing effect of the first valve body 1 and the second valve body 2, the second sealing plug 561 is fixedly connected to the outer wall of the abutment rod 54, and the sealing head 562 is fixedly connected to the other end of the inner wall of the first valve body 1 and the second valve body 2. The sealing head 562 is provided with a sealing hole 563 that matches the second sealing plug 561. Then, under the action of the support spring 53, when the abutment rod 54 is not under force, the end of the abutment rod 54 moves, and then the second sealing plug 561 blocks the sealing hole 563, thereby realizing the closure of the valve body.

[0034] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0035] Working principle: When the first valve body 1 and the second valve body 2 are connected to each other, the two connecting housings 4 are connected to each other by bolts, which allows the ends of the two contact rods 54 to contact each other. This causes the first sealing plug 52 to move backward, and the guide hole 551 on the sealing sleeve 55 to be in the open state. At the same time, the sealing assembly 56 opens synchronously, and then the main valve can be opened to realize the injection operation. When the two valve bodies are disconnected, under the action of the support spring 53, the first sealing plug 52 can easily close the guide hole 551. Then the sealing assembly 56 performs the sealing operation synchronously. The liquid at the overflow point can be collected through the storage chamber 41 in the connecting housing 4, which prevents the liquid from spilling on the ground. This prevents the liquid from accumulating at the leak site, which would cause inconvenience to subsequent cleaning and treatment. This not only increases the workload, but may also lead to secondary accidents caused by improper cleaning, thus affecting the overall safety and work efficiency.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An LNG trip valve, characterized in that, It includes a first valve body (1), a second valve body (2), a connecting plate (3), a connecting housing (4), and a blocking mechanism (5), wherein, The ends of the first valve body (1) and the second valve body (2) are fixedly connected to a connecting plate (3), and the ends of the connecting plate (3) are fixedly connected to a connecting housing (4). The two connecting housings (4) are connected to each other by bolts. The blocking mechanism (5) is provided in two sets, which are respectively installed inside the first valve body (1) and the second valve body (2); The blocking mechanism (5) includes a supporting inner plate (51), a first sealing plug (52), a supporting spring (53), an abutment rod (54), a sealing sleeve (55), and a sealing assembly (56), wherein, The inner support plate (51) is slidably connected to one end of the inner wall of the first valve body (1) and the second valve body (2). The first sealing plug (52) is fixedly connected to one side of the inner support plate (51). The sealing sleeve (55) is fixedly connected to the middle of the inner wall of the first valve body (1) and the second valve body (2). A plurality of support springs (53) are provided between one side of the sealing sleeve (55) and the other side of the inner support plate (51) and are connected through the support springs (53). One end of the abutment rod (54) is fixedly connected to the end of the first sealing plug (52), and the sealing assembly (56) is mounted on the abutment rod (54).

2. The LNG break-off valve according to claim 1, characterized in that, The sealing assembly (56) includes a second sealing plug (561), a sealing head (562), and a sealing hole (563), wherein, The second sealing plug (561) is fixedly connected to the outer wall of the abutment rod (54), and the sealing head (562) is fixedly connected to the other end of the inner wall of the first valve body (1) and the second valve body (2). The sealing head (562) is provided with a sealing hole (563) that matches the second sealing plug (561).

3. The LNG break-off valve according to claim 1, characterized in that, The sidewall of the inner support plate (51) is provided with a plurality of conveying holes (511) in a circumferential array, and the sidewall of the sealing sleeve plate (55) is provided with a guide hole (551) that matches the first sealing plug (52).

4. The LNG break-off valve according to claim 1, characterized in that, The other end of the abutment rod (54) is fixedly connected to an abutment head (541).

5. The LNG break-off valve according to claim 1, characterized in that, The connecting housing (4) has a storage compartment (41) inside, and a protective plug (42) is installed on the outer wall of the connecting housing (4).

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