A new type of vacuum interface

Abstract

The utility model discloses a novel vacuum interface relates to LNG vehicle gas cylinder technical field, including LNG vehicle gas cylinder main part, the upper end surface welding of LNG vehicle gas cylinder main part has vacuum interface, the welding interface department of LNG vehicle gas cylinder main part and vacuum interface is provided with the reinforcing ring, the utility model gas cylinder interlayer vacuum is extracted to the qualified, uses vacuum valve core to block the vacuum extraction interface, then the locking closing of protection shell is carried out, and the rotation of connecting rod is carried out on the protection shell through the movable shaft, and the locking rod of connecting rod lower end surface and the clamping groove of vacuum valve core upper end opening are engaged, and when the connecting rod is placed horizontally, the end of connecting rod and the mutual adhesion of mounting block, and the locking of connecting rod and mounting block is carried out to the extrusion clamping of vacuum valve core in the inside of vacuum interface through the rotation second bolt, effectively prevent the vacuum valve core from falling off in the vibration or external force effect in the use process, improve the security and reliability of gas cylinder.

Description

TECHNICAL FIELD

[0001] The utility model relates to LNG vehicle-mounted gas cylinder technical field, concretely is a new vacuum interface. BACKGROUND

[0002] LNG vehicle-mounted gas cylinder as the important equipment of storing and transporting liquefied natural gas has extensive application in the energy transportation and supply field. In order to ensure the heat preservation performance and safety of LNG gas cylinder, its inside is usually designed as multilayer structure, wherein the interlayer is vacuumized to reduce heat conduction, thereby improving the heat preservation efficiency of gas cylinder.

[0003] The main structure of the existing LNG vehicle-mounted gas cylinder is double-layer vacuum structure, including inner container, outer container, interface valve, liquid level sensor and other parts, the inner container is used to store low temperature (-162 DEG C) LNG, and the outer shell forms the interlayer space with the inner container and is filled with heat insulation material, the interlayer is vacuumized to high vacuum, thereby forming good heat insulation effect, and the vacuum interface of the gas cylinder needs to be connected by vacuum pump for vacuum treatment, and then closed by vacuum valve core.

[0004] However, the LNG vehicle-mounted gas cylinder vacuum interface in the prior art lacks reliable protection device, is easy to be abraded and collided by external factors, leads to vacuum failure, and the sealing element vacuum valve core of the vacuum interface is easy to fall off due to vibration or external force in the transportation and use process, which affects the heat preservation effect and safety of the gas cylinder.

[0005] Therefore, in view of the above, the existing structure is studied and improved, and a new vacuum interface is provided. UTILITY MODEL CONTENT

[0006] The utility model aims at providing a new vacuum interface to solve the problems of the LNG vehicle-mounted gas cylinder vacuum interface in the prior art lacking reliable protection device, being easy to be abraded and collided by external factors, leading to vacuum failure, and the sealing element vacuum valve core of the vacuum interface being easy to fall off due to vibration or external force in the transportation and use process, which affects the heat preservation effect and safety of the gas cylinder.

[0007] To achieve the above object, the utility model provides the following technical scheme: a new vacuum interface, including LNG vehicle-mounted gas cylinder main body, the upper end surface of LNG vehicle-mounted gas cylinder main body is welded with vacuum interface, the welding interface place of LNG vehicle-mounted gas cylinder main body and vacuum interface is provided with reinforcing ring, the right side wall of vacuum interface is provided with the protection shell connected through rotating component;

[0008] The lower end welding position of the vacuum interface is a slope, and the slope is attached to the outer wall of the LNG vehicle-mounted gas cylinder body, the upper end of the protective shell is provided with a connecting rod connected through a movable assembly, and the lower end of the connecting rod is fixedly connected with a locking rod in an L-shaped structure.

[0009] Further, the rotating assembly comprises two groups of fixed rods fixedly connected to the right side wall of the vacuum interface, the fixed rods are rotatably connected with connecting shafts inside, and the outer wall of the protective shell at the connecting shafts is fixedly connected.

[0010] Further, the protective shell is provided in two groups, and the two groups of protective shells can be opened and closed on one side of the vacuum interface, and the edges of the protective shells are provided with two groups of first bolts.

[0011] Further, the inner wall of the vacuum interface is fixedly connected with a limiting ring, the upper end face of the limiting ring is attached with a vacuum valve core, and the upper end of the vacuum valve core is provided with two groups of clamping grooves.

[0012] Further, the movable assembly comprises a movable shaft provided at the upper end of the protective shell, and the connecting rod is movably connected to the outer wall of the movable shaft.

[0013] Further, the front end of the connecting rod is internally threadedly connected with a second bolt, and the edge of the protective shell is fixedly connected with a mounting block at the upper end.

[0014] Further, the outer wall of the vacuum interface is in a threaded shape, the outer wall of the vacuum interface is fixedly connected with a fixed ring, and the upper end face of the fixed ring is fixedly connected with a rubber ring.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] Firstly, the two groups of protective shells are rotatably opened and closed on one side of the vacuum interface through the connecting shaft and the fixed rod, and then the two groups of protective shells are locked through the first bolt, so that the vacuum interface is protected after use, and the damage caused by abrasion and collision due to external factors is reduced.

[0017] Secondly, after the gas cylinder interlayer is vacuumed to the qualified level, the vacuum valve core is used to block the vacuum interface, then the protective shell is locked and closed, the connecting rod is rotated on the protective shell through the movable shaft, the locking rod at the lower end of the connecting rod is clamped in the clamping groove at the upper end of the vacuum valve core, and when the connecting rod is horizontally placed, the end of the connecting rod is attached to the mounting block, the second bolt is rotated to lock the connecting rod and the mounting block, so that the vacuum valve core is clamped in the vacuum interface, the vacuum valve core is effectively prevented from falling off due to vibration or external force during use, and the safety and reliability of the gas cylinder are improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 This is a three-dimensional structural diagram of the main body of the device;

[0019] Figure 2 A three-dimensional structural diagram of the connecting rod connection;

[0020] Figure 3 A schematic diagram of the three-dimensional connection structure of the protective shell;

[0021] Figure 4 This is a three-dimensional structural diagram of the internal connection of the vacuum interface.

[0022] In the diagram: 1. LNG vehicle-mounted gas cylinder body; 2. Vacuum interface; 201. Reinforcing ring; 202. Inclined surface; 3. Fixing rod; 301. Connecting shaft; 302. Protective shell; 303. First bolt; 4. Movable shaft; 401. Connecting rod; 402. Locking rod; 403. Second bolt; 404. Mounting block; 5. Limiting ring; 501. Vacuum valve core; 502. Slot; 6. Fixing ring; 601. Rubber ring. Detailed Implementation

[0023] 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.

[0024] Example 1

[0025] like Figure 1 - Figure 4 As shown, a novel vacuum interface includes an LNG vehicle-mounted gas cylinder body 1, a vacuum interface 2 welded to the upper end face of the LNG vehicle-mounted gas cylinder body 1, a reinforcing ring 201 provided at the welding interface between the LNG vehicle-mounted gas cylinder body 1 and the vacuum interface 2, and the load-bearing capacity and stability of the entire welding structure are improved by increasing the thickness and strength of the welding edge. A protective shell 302 connected by a rotating component is provided on the right side wall of the vacuum interface 2.

[0026] The lower end of the vacuum interface 2 is welded to a bevel 202, and the bevel 202 fits against the outer wall of the LNG vehicle-mounted gas cylinder body 1, which is conducive to welding. The upper end of the protective shell 302 is provided with a connecting rod 401 connected by a movable component, and the lower end of the connecting rod 401 is fixedly connected to a locking rod 402 with an L-shaped structure.

[0027] Further, the rotating assembly includes two groups of fixed rods 3 fixedly connected to the right side wall of the vacuum interface 2, a connecting shaft 301 rotatably connected in the fixed rod 3, and a protective shell 302 fixedly connected to the outer wall of the connecting shaft 301. The two groups of protective shells 302 are rotatable to open and close on one side of the vacuum interface 2, and the edge of the protective shell 302 is provided with two groups of first bolts 303. The two groups of protective shells 302 are rotatable to open and close on one side of the vacuum interface 2 through the connecting shaft 301 and the fixed rod 3, and then the two groups of protective shells 302 are locked through the first bolts 303 to protect the vacuum interface 2 after use, thereby reducing the damage caused by abrasion and collision of the vacuum interface 2 due to external factors.

[0028] Further, the movable assembly includes a movable shaft 4 arranged at the upper end of the protective shell 302, a connecting rod 401 movably connected to the outer wall of the movable shaft 4, a second bolt 403 threadedly connected to the front end of the connecting rod 401, an installation block 404 fixedly connected to the upper end of the edge of the protective shell 302, a limiting ring 5 fixedly connected to the inner wall of the vacuum interface 2, a vacuum valve core 501 abutting the upper end face of the limiting ring 5, and two groups of clamping grooves 502 formed in the upper end of the vacuum valve core 501. After the use of the vacuum interface 2, the vacuum valve core 501 is inserted and blocked by the limiting ring 5 to realize the connection between the vacuum valve core 501 and the vacuum interface 2. After the vacuum in the gas cylinder sandwich is qualified, the vacuum interface 2 is plugged by the vacuum valve core, and then the protective shell 302 is locked and closed. The connecting rod 401 is rotated on the protective shell 302 through the movable shaft 4, the locking rod 402 at the lower end face of the connecting rod 401 is clamped in the clamping groove 502 formed in the upper end of the vacuum valve core 501, and the end of the connecting rod 401 abuts the installation block 404 when the connecting rod 401 is horizontally placed. The connecting rod 401 and the installation block 404 are locked by rotating the second bolt 403, so that the vacuum valve core 501 is clamped in the vacuum interface 2, thereby effectively preventing the vacuum valve core 501 from falling off due to vibration or external force during use, and improving the safety and reliability of the gas cylinder.

[0029] Embodiment two

[0030] As shown in Figure 1 and Figure 4 , the utility model discloses a novel vacuum interface, compared with embodiment one, as another embodiment of the utility model, the outer wall of vacuum interface 2 is screw thread, the outer wall of vacuum interface 2 is fixedly connected with fixed ring 6, the upper end surface of fixed ring 6 is fixedly connected with rubber ring 601, the outer wall of vacuum interface 2 is screw thread, is connected to the vacuum pump outside, then when screwing, contact with the rubber ring 601 on fixed ring 6, improve the sealing property when vacuum processing.

[0031] Working principle: the outer wall of the set vacuum interface 2 is threaded, used for connecting the vacuum pump, then threaded connection, contact with the rubber ring 601 on the fixed ring 6, improve the sealing performance during vacuum treatment, then set two groups of protective shell 302 through the connecting shaft 301 and fixed rod 3 on one side of the vacuum interface 2 rotatable open and close, then through the first bolt 303 two groups of protective shell 302 are locked, after the use of vacuum interface 2 is completed, protection, at the same time, after the use of vacuum interface 2 is completed, through the vacuum valve core 501 is inserted, through the limiting ring 5 to block the vacuum valve core 501, realize the connection of vacuum valve core 501 and vacuum interface 2, after the vacuum extraction of the gas cylinder interlayer is qualified, the vacuum extraction interface 2 is blocked by the vacuum valve core, then the protective shell 302 is locked and closed, the connecting rod 401 is rotated on the protective shell 302 through the movable shaft 4, the locking rod 402 on the lower end surface of the connecting rod 401 is clamped in the clamping groove 502 opened on the upper end of the vacuum valve core 501, at the same time, when the connecting rod 401 is placed horizontally, the end of the connecting rod 401 and the mounting block 404 are mutually attached, the second bolt 403 is rotated to lock the connecting rod 401 and the mounting block 404, so as to extrude the vacuum valve core 501 and clamp it in the vacuum interface 2, effectively prevent the vacuum valve core 501 from falling off due to vibration or external force during use.

[0032] This is the working principle of the new type of vacuum interface.

[0033] The embodiments of the present application are given for the purpose of example and description, and are not exhaustive or limit the present application to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described in order to better illustrate the principles and practical application of the present application, and to enable those skilled in the art to understand the present application so as to design various embodiments with various modifications suitable for specific purposes.

Claims

1. A new type of vacuum interface comprising a LNG on-board cylinder body (1), characterized in that, The upper end face of the LNG vehicle-mounted gas cylinder body (1) is welded with a vacuum interface (2), the welding interface of the LNG vehicle-mounted gas cylinder body (1) and the vacuum interface (2) is provided with a reinforcing ring (201), and the right side wall of the vacuum interface (2) is provided with a protective shell (302) connected through a rotating assembly; The lower end welding portion of the vacuum interface (2) is a bevel (202), and the bevel (202) and the outer wall of the LNG vehicle-mounted gas cylinder body (1) are mutually attached, the upper end of the protective shell (302) is provided with a connecting rod (401) connected through a movable assembly, and the lower end of the connecting rod (401) is fixedly connected with a locking rod (402) in an L-shaped structure.

2. A novel vacuum interface as claimed in claim 1, wherein, The rotating assembly comprises two groups of fixed rods (3) fixedly connected to the right side wall of the vacuum interface (2), the fixed rods (3) are rotatably connected with connecting shafts (301) inside, and the protective shell (302) is fixedly connected to the outer wall of the connecting shaft (301).

3. A novel vacuum interface as claimed in claim 1, wherein, The protective shell (302) is provided in two groups, and the two groups of protective shells (302) can be opened and closed on one side of the vacuum interface (2), and the edges of the protective shells (302) are provided with two groups of first bolts (303).

4. A novel vacuum interface as claimed in claim 1, wherein, The movable assembly comprises a movable shaft (4) provided at the upper end of the protective shell (302), and the connecting rod (401) is movably connected to the outer wall of the movable shaft (4).

5. A novel vacuum interface as claimed in claim 1, wherein, The front end of the connecting rod (401) is internally threadedly connected with a second bolt (403), and the edge of the protective shell (302) is fixedly connected with a mounting block (404) at the upper end.

6. A novel vacuum interface as claimed in claim 1, wherein, The inner wall of the vacuum interface (2) is fixedly connected with a limiting ring (5), the upper end face of the limiting ring (5) is attached with a vacuum valve core (501), and the upper end of the vacuum valve core (501) is provided with two groups of clamping grooves (502).

7. A novel vacuum interface as claimed in claim 1, wherein, The outer wall of the vacuum The outer wall of the vacuum interface (2) is fixedly connected with a fixed ring (6), The upper end face of the fixed ring (6) is fixedly connected with a rubber ring (601).

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