Breaking valve guiding and limiting mechanism

Abstract

The utility model discloses a breakaway valve guiding and limiting mechanism which is characterized in that a breakaway valve is provided with a high-pressure hose, the guiding and limiting mechanism comprises a limiting and guiding cylinder, a limiting and guiding block is installed in the limiting and guiding cylinder in a sliding mode, and the high-pressure hose penetrates through and is attached to the limiting and guiding block. According to the utility model, the limiting guide block is matched with the limiting guide cylinder, so that the deformation recovery force of the high-pressure hose of the snap valve is transmitted to the limiting guide cylinder through the limiting guide block; therefore, the swing range of the snapping head combination in the downward punching process under the unexpected conditions (the unexpected conditions occur when the filling connector and the connecting base of the filled equipment are in the connected state and are not disengaged) is reduced, and the collision damage degree of the snapping head combination and the limiting guide cylinder is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a pull-off valve protection mechanism, specifically a pull-off valve guiding and limiting mechanism. BACKGROUND

[0002] In the process of hydrogen or other high-pressure gas filling, the pull-off valve body 2 is fixedly connected to the pull-off valve mounting seat 1, and the pull-off head assembly 3 is connected to the pull-off valve body 2 to open the respective internal one-way valve cores and keep the communication state; the pull-off head assembly is connected to the filling connector through the high-pressure hose 7, when the filling connector (in the closed state) is connected to the connecting seat of the filling equipment, the filling connector is operated to be in the open state to fill the high-pressure fluid, and after the filling to the set value, the filling connector is operated to be in the closed state, the connecting seat of the filling equipment is connected to the operation of the filling connector, the filling connector is removed, and the filling process is completed.

[0003] When the filling connector and the connecting seat of the filling equipment are in the connected state and do not disconnect, an unexpected situation occurs, the filling equipment starts to leave (for example, a hydrogen filling vehicle directly starts without removing the hydrogen filling gun), and the filling connector pulls the high-pressure hose, and after a certain pulling force is reached, the pull-off head assembly and the pull-off valve body are disconnected, although the internal one-way valves of the two are closed, the fluid will not leak, but the lower part of the traditional high-pressure hose 3 enters the limiting guide cylinder 6 (as shown in Figure 4 Due to the recovery deformation ability of the high-pressure hose, especially after being wrapped with the protective sleeve 7, the recovery deformation ability is certain, so that after the pull-off head assembly 3 is connected to the pull-off valve body 2, the pull-off valve body 2 gives the pull-off head assembly 3 a radial direction pulling force to overcome the recovery deformation ability of the curved part; after sudden disconnection, the pull-off head assembly 3 has a downward impact force, and after the pull-off valve body 2 does not give the pull-off head assembly 3 a radial direction pulling force, the pull-off head assembly 3 will be offset (as shown in Figure 4 During the downward impact, if the pull-off head assembly 3 is offset, the pull-off head assembly 3 will collide with the limiting guide cylinder, thereby causing damage to the assembly. Utility model content

[0004] Therefore, in order to solve the above problems, the utility model provides a pull-off valve guiding and limiting mechanism, which matches the limiting guide block with the limiting guide cylinder, transmits the recovery deformation force of the high-pressure hose of the pull-off valve to the limiting guide cylinder through the limiting guide block, and the gap between the limiting guide cylinder and the limiting guide block is small, thereby reducing the swing range of the pull-off head assembly when it impacts downward in an unexpected situation (when the filling connector and the connecting seat of the filling equipment are in the connected state and do not disconnect, an unexpected situation occurs), and reducing the collision damage degree of the pull-off head assembly and the limiting guide cylinder.

[0005] Specifically, the application discloses a pull-off valve guide limiting mechanism, wherein the pull-off valve has a high-pressure hose, the guide limiting mechanism comprises a limiting guide cylinder, and a limiting guide block is arranged in the limiting guide cylinder and is slidingly arranged in the limiting guide cylinder, and the high-pressure hose penetrates through and is attached to the limiting guide block.

[0006] Optionally, the limiting guide cylinder is formed by a limiting guide cylinder arranged below the pull-off valve.

[0007] Optionally, the limiting guide block is provided with a plurality of through holes matched with the high-pressure hose.

[0008] Optionally, the limiting guide block is composed of two half blocks, the two half blocks are combined in a detachable mode, and the through holes are divided into two halves by the half blocks.

[0009] Optionally, the two half blocks are combined in a bolt connection mode or a magnetic connection mode or a mortise and tenon connection mode.

[0010] The application has the following advantages.

[0011] The application restores the deformation force of the high-pressure hose of the pull-off valve to the limiting guide cylinder through the limiting guide block, the gap between the limiting guide cylinder and the limiting guide block is small (as long as the limiting guide block can slide in the limiting guide cylinder, the gap between the limiting guide cylinder and the limiting guide block can be infinitely small), and thus the swing range of the pull-off head combination when the pull-off head combination is punched downward in an unexpected situation (when the connector and the connecting seat of the receiving equipment are connected and not disconnected) is reduced, and the damage degree of the collision between the pull-off head combination and the limiting guide cylinder is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is a structural schematic view of the pull-off valve provided with the limiting guide block (in a pull-off state);

[0013] Figure 2 is a structural schematic view of the pull-off valve provided with the limiting guide block (in a pull-off state);

[0014] Figure 3 is a three-dimensional structural schematic view of the pull-off valve provided with the limiting guide block (in a pull-off state);

[0015] Figure 4 is a structural schematic view of the pull-off valve without the limiting guide block (in a pull-off state);

[0016] Figure 5 is a structural schematic view of the pull-off valve without the limiting guide block (in a pull-off state);

[0017] Figure 6 is a structural schematic view of the limiting guide block;

[0018] Figure 7 This is a schematic diagram of the limiting guide block from another perspective;

[0019] Figure 8 This is a front view schematic diagram of the limiting guide block;

[0020] Figure 9 yes Figure 8 Schematic diagram of the cross section of AA;

[0021] Figure 10 This is a schematic diagram of the half-block structure;

[0022] Figure 11 This is a schematic diagram of the structure of the half-block from another perspective;

[0023] In the diagram: 1. Connecting seat; 2. Breakaway valve body; 3. Breakaway head assembly; 4. High-pressure hose; 5. Guide block; 51. Half block; 52. Through hole; 511. Half hole; 53. Threaded hole; 6. Limiting guide cylinder; 7. Protective sleeve. Detailed Implementation

[0024] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0025] In this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, without necessarily requiring or implying 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 a process, method, article, or apparatus.

[0026] As described in the background section, if an unexpected situation occurs when the refueling connector and the connector 1 of the refueling device are connected and not disconnected, and the refueling device is started and removed (e.g., a hydrogen refueling vehicle is started directly without removing the hydrogen refueling nozzle), the high-pressure hose is pulled along with the refueling connector. After reaching a certain pulling force, the head assembly is pulled apart from the break-off valve body. Although the internal one-way valves of both are closed and the fluid does not leak, the lower part of the conventional high-pressure hose 3 is bent and enters the limiting guide cylinder 6 (e.g., ...). Figure 4As shown), because the high-pressure hose has a certain ability to recover its deformation, especially after being wrapped with the protective sleeve 7, it has a certain ability to recover its deformation. Therefore, after the break-off assembly 3 is connected to the break-off valve body 2, the break-off valve body 2 will apply a radial tensile force to the break-off assembly 3 to overcome the ability of the bent part to recover its deformation. After sudden separation, the break-off assembly 3 will have a downward impact force. At the same time, after the break-off valve body 2 no longer applies a radial tensile force, the break-off assembly 3 will shift (e.g., Figure 5 As shown, if the deflection occurs during the downward stroke, the pull-off head assembly 3 will collide with the limit guide cylinder, resulting in damage to the assembly.

[0027] For the reasons mentioned above, this embodiment provides a breakaway valve guide and limiting mechanism, such as... Figures 1-3 The pull-off valve has a high-pressure hose 4, and the guide limiting mechanism includes a limiting guide cylinder. A limiting guide block 5 is installed inside the limiting guide cylinder. The limiting guide block 5 is slidably installed inside the limiting guide cylinder. The high-pressure hose 4 passes through and fits against the limiting guide block 5. The limiting guide cylinder is formed by a limiting guide cylinder 6 installed below the pull-off valve (i.e., formed through a through hole inside the limiting guide cylinder).

[0028] In the aforementioned technical features, the high-pressure hose 4 penetrates and fits into the limiting guide block. Through the matching of the limiting guide block and the limiting guide cylinder, the restoring deformation force of the high-pressure hose of the breakaway valve is transmitted to the limiting guide cylinder through the limiting guide block. The gap between the limiting guide cylinder and the limiting guide block is small (as long as the limiting guide block can slide inside the limiting guide cylinder, the gap between the limiting guide cylinder and the limiting guide block can be infinitely small), thereby reducing the swing range of the breakaway head assembly during downward impact in case of an accident (when the filling connector and the connection seat of the filling equipment are in a connected state and have not been disconnected), and reducing the degree of collision damage between the breakaway head assembly and the limiting guide cylinder.

[0029] To accommodate multiple high-pressure hoses, in one embodiment, the limiting guide block has several through holes 52 that match the high-pressure hoses, such as... Figures 6-11 As shown, the limiting guide block has two through holes.

[0030] To facilitate the installation of the high-pressure hose into the through hole, in one embodiment, such as Figures 6-11 As shown, the limiting guide block 5 is composed of two half blocks 51, which are detachably combined. The through hole 52 is divided into two half holes 511 by the half blocks.

[0031] To facilitate the assembly of the two halves, the two halves are assembled by bolts, magnets, or tenon joints. Preferably, the two halves are connected by bolts. A threaded hole 53 is installed through the half-piece in the radial direction.

[0032] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A pull-off valve guide stop mechanism, the pull-off valve having a high pressure hose, characterized by: The guiding and limiting mechanism comprises a limiting guiding cylinder, and a limiting guiding block is installed in the limiting guiding cylinder, and the limiting guiding block is slidingly installed in the limiting guiding cylinder, and the high-pressure hose penetrates and is attached to the limiting guiding block.

2. The pull-to-break valve guide limit mechanism of claim 1, wherein: The limiting guiding cylinder is formed by the limiting guiding block installed below the pull-off valve.

3. The pull-to-break valve guide limit mechanism of claim 1, wherein: The limiting guiding block is provided with a plurality of through holes matched with the high-pressure hose.

4. The pull-to-break valve guide limit mechanism of claim 3, wherein: The limiting guiding block is composed of two half blocks, and the two half blocks are combined in a detachable manner, and the through holes are divided into two halves by the half blocks.

5. The pull-to-break valve guide limit mechanism of claim 4, wherein: The two half blocks are combined in a bolt connection, magnetic connection or mortise and tenon connection manner.

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