CN213271512U

CN213271512U - Quick connector for hydrogen pipeline of fuel cell

Info

Publication number: CN213271512U
Application number: CN202021735649.5U
Authority: CN
Inventors: 陆博岩; 周鹏飞; 郑宝乾; 邓景聪
Original assignee: Chengdu Yihuatong Power Technology Co Ltd
Current assignee: Chengdu Yihuatong Power Technology Co Ltd
Priority date: 2020-08-19
Filing date: 2020-08-19
Publication date: 2021-05-25
Anticipated expiration: 2030-08-19

Abstract

A quick coupling for a hydrogen pipeline of a fuel cell belongs to the field of hydrogen fuel cell application, and comprises: female end joint, public end joint and locking mechanism. One end of the female end joint is provided with a connecting disc, a mounting hole is processed in the vertical connecting disc, and the inner wall of the mounting hole is provided with a plurality of layers of sealing rings; the male end connector comprises a circular tube, the circular tube penetrates through the mounting hole, the outer wall of the circular tube is in contact with the sealing ring, and a flange is arranged on the periphery of the circular tube; locking mechanism includes fixture block an and fixture block b, and fixture block a and fixture block b one end all articulate in the connection pad, and other end detachable is connected with the connection pad, and fixture block a and fixture block b are located pipe periphery side, and during quick-operation joint locking, fixture block a and fixture block b contact with the flange, compress tightly the male end joint in the female end joint. The air tightness is good, the structure is simple, the operation is convenient, and the installation and the disassembly can be realized quickly.

Description

Quick connector for hydrogen pipeline of fuel cell

Technical Field

The utility model belongs to hydrogen fuel cell application especially relates to a quick-operation joint for fuel cell hydrogen pipeline.

Background

The fuel cell is used as a substitute for the conventional fuel power, and the application of the fuel cell is gradually popularized, wherein the common fuel cell is a hydrogen fuel cell, and the working principle of the fuel cell is that hydrogen and oxygen generate electrochemical reaction under the action of a catalyst to generate electric energy. Compared with the traditional power source fuel, the fuel required by the hydrogen fuel cell is pure hydrogen, the hydrogen density is low, the explosion range is wide, and the requirement on the air tightness of the whole system is high, so that a joint with good air tightness is required to be designed for the connection part of a hydrogen pipeline; in addition, the hydrogen fuel cell is used as a power system, and joints are required to be arranged at various parts such as a hydrogen inlet pipe, a pressure reducer and the like, and the joints are large in number, so that the joints are required to be designed into a structure capable of being quickly disassembled and assembled.

SUMMERY OF THE UTILITY MODEL

For solving prior art not enough, the utility model provides a quick-operation joint for fuel cell hydrogen pipeline can satisfy quick assembly disassembly's demand when guaranteeing airtight.

In order to realize the purpose of the utility model, the following scheme is proposed:

a quick connector for a fuel cell hydrogen circuit, comprising: female end joint, public end joint and locking mechanism.

One end of the female end joint is provided with a connecting disc, a mounting hole is processed perpendicular to the connecting disc, and the inner wall of the mounting hole is provided with a plurality of layers of sealing rings;

the male end connector comprises a circular tube, the circular tube penetrates through the mounting hole, the outer wall of the circular tube is in contact with the sealing ring, and a flange is arranged on the periphery of the circular tube;

the locking mechanism comprises a clamping block a and a clamping block b, one end of each clamping block a and one end of each clamping block b are hinged to the connecting disc, the other end of each clamping block a and the other end of each clamping block b are detachably connected with the connecting disc, the clamping blocks a and the clamping blocks b are located on the periphery of the circular tube, and when the quick connector is locked, the clamping blocks a and the clamping blocks b are in contact with the flanges to tightly press the male end connector to the female end connector.

Further, the sealing ring is provided with two layers.

Furthermore, an outer cone is arranged at the joint of the flange and the circular tube, an inner cone is arranged at the opening of the mounting hole, and the outer cone is attached to the inner cone.

Further, arc-shaped notches are machined in the clamping blocks a and the clamping blocks b and are used for pressing the flanges.

Furthermore, the connecting disc is provided with two hinge holes and a positioning hole, the hinge holes and the positioning hole form an isosceles triangle structure, the connecting line of the two hinge holes is a bottom edge, one ends of the fixture blocks a and b are respectively hinged to the hinge holes, the other ends of the fixture blocks a and b are overlapped, and the fixture blocks a and b are connected to the positioning hole through locking screws.

Furthermore, the hinge hole and the positioning hole are through holes.

Furthermore, a threaded hole is formed in the fixture block a, a through hole is formed in the fixture block b, and when the quick connector is locked, the locking screw penetrates through the positioning hole and the through hole in sequence and is connected with the threaded hole.

Further, the thickness of the fixture block a is the same as that of the fixture block b, a step is machined on the lower surface of the fixture block a at the overlapping position, a step is machined on the upper surface of the fixture block b, and the step surfaces of the fixture block a and the fixture block b can be attached to each other.

The beneficial effects of the utility model reside in that:

1. the female end connector and the male end connector are provided with two sealing structures, one is sealing through a multilayer sealing ring arranged in the mounting hole, the other is sealing through the inner cone and the outer cone which are attached to each other by using a plane, the inner cone and the outer cone not only can play a role in sealing, but also can enable the circular tube to be coaxial with the mounting hole by using the characteristic of automatic centering of the cone structure, so that the sealing ring is uniformly extruded along the circumference, and the rice cutting effect is further improved;

2. simple structure, convenient operation can install and dismantle in the ripe realization soon, and public end joint is connected and is locked through locking mechanism with female end joint, and fixture block a and fixture block b only need a locking screw just can accomplish locking and loosen.

Drawings

The drawings described herein are for illustrative purposes only of selected embodiments and not all possible implementations, and are not intended to limit the scope of the present disclosure.

FIG. 1 shows an exploded view of the present application;

FIG. 2 shows the structure of the female end fitting;

fig. 3 shows the structure of the latch a and the latch b;

FIG. 4 shows a side view of the present application;

FIG. 5 shows a cross-sectional view along A-A;

fig. 6 shows a locking state diagram of the present application.

The labels in the figure are: 10-female end joint, 11-connecting disc, 111-hinge hole, 112-positioning hole, 12-mounting hole, 13-sealing ring, 14-inner cone, 20-male end joint, 21-round tube, 22-flange, 23-outer cone, 30-locking mechanism, 31-clamping block a, 311-threaded hole, 32-clamping block b, 321-through hole, 33-arc notch and 34-locking screw.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings, but the described embodiments of the present invention are some embodiments of the present invention, not all embodiments.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship that the product of the present invention is usually placed when in use, and this is only for the convenience of description of the present invention and simplification of the description. The terms "first," "second," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. The terms "parallel", "perpendicular", etc. do not require that the components be absolutely parallel or perpendicular, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; either directly or indirectly through intervening media, or through both elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Examples

As shown in fig. 1-6, a quick connector for a hydrogen line of a fuel cell includes: a female connector 10, a male connector 20, and a locking mechanism 30.

Specifically, the female end joint 10 is of a cylindrical structure, one end of the female end joint is provided with a connecting disc 11, a mounting hole 12 is formed in the vertical connecting disc 11, the mounting hole 12 is communicated with a channel in the female end joint 10, an annular groove is formed in the inner wall of the mounting hole 12 and used for mounting a sealing ring 13, the outer wall of the male end joint 20 is sealed with the inner hole of the female end joint 10 through the sealing ring 13, and the annular groove and the sealing ring 13 are provided with multiple layers to increase the sealing effect; the seal ring 13 is provided with two layers in this embodiment.

Specifically, the male end connector 20 includes a circular tube 21, the circular tube 21 is disposed through the mounting hole 12, the outer wall of the circular tube 21 contacts with the sealing ring 13, and a flange 22 is disposed on the outer periphery of the circular tube 21, wherein, in use, the circular tube 21 is usually a part of a hydrogen pipeline.

Specifically, the locking mechanism 30 includes a latch a31 and a latch b32, one end of each of the latch a31 and the latch b32 is hinged to the connecting plate 11, the other end of each of the latch a31 and the latch b32 is detachably connected to the connecting plate 11, the latch a31 and the latch b32 are located on the outer peripheral side of the circular tube 21, and when the quick connector is locked, the latch a31 and the latch b32 contact with the flange 22 to press the male end connector 20 against the female end connector 10.

More specifically, the bottom surfaces of the latch a31 and the latch b32 are both provided with an arc notch 33, the arc center of the arc notch 33 is coaxial with the circular tube 21 in the locked state, the arc notch 33 is used for pressing the flange 22, the bottom surface of the arc notch 33 is pressed on the end surface of the flange 22, so that the male end connector 20 is pressed on the female end connector 10, and a gap is reserved between the side surface of the arc notch 33 and the flange 22.

More specifically, the connecting disc 11 is provided with two hinge holes 111 and a positioning hole 112, the hinge holes 111 and the positioning hole 112 form an isosceles triangle structure, the connecting line of the two hinge holes 111 is the bottom side, the connecting disc 11 is also in a corresponding triangle structure, one ends of the fixture block a31 and the fixture block b32 are respectively hinged to the hinge holes 111, and the axis of the hinge point is parallel to the axis of the mounting hole 12; the other ends of the latch a31 and the latch b32 are overlapped, and the hinge hole 111 and the positioning hole 112 are through holes. At the overlapped part of the fixture block a31 and the fixture block b32, a threaded hole 311 is processed on the fixture block a31, a through hole 321 is processed on the fixture block b32, and when the quick connector is locked, the locking screw 34 passes through the positioning hole 112 and the through hole 321 in sequence and is connected with the threaded hole 311, so that the fixture block a31 and the fixture block b32 are fixed, and the female end connector 10 and the male end structure 20 are locked.

More specifically, as shown in fig. 3, the thickness of the clip a31 is the same as that of the clip b32, a step is formed on the lower surface of the clip a31 and a step is formed on the upper surface of the clip b32 at the overlapping portion of the clip a31 and the clip b32, and the step surfaces of the clip a31 and the clip b32 can be attached to each other.

Preferably, as shown in fig. 1 and fig. 2, in order to further improve the sealing performance, an outer cone 23 is disposed at a connection position of the flange 22 and the circular tube 21, the outer cone 23 faces the mounting hole 12, the inner cone 14 is disposed at an opening of the mounting hole 12, and an outer surface of the outer cone 23 is attached to an inner surface of the inner cone 14 to form a cone-shaped sealing structure. After the outer cone 23 is attached to the inner cone 14, a gap is optionally formed between the front end of the circular tube 21 and the bottom of the mounting hole 12, so as to ensure the tightness of the attachment of the outer cone 23 to the inner cone 14. Because the conical structure is arranged between the female end connector 10 and the male end connector 20, the coaxiality between the circular tube 21 and the mounting hole 12 is improved, the gap between the circular tube 21 and the peripheral side of the mounting hole 12 is more uniform, the compression amount of the sealing ring 13 along the periphery is more uniform, and the sealing effect is further improved.

The specific implementation process comprises the following steps: when the quick connector is used, the round tube 21 is firstly inserted into the mounting hole 12, the outer cone 23 is attached to the inner cone 14, then the fixture block a31 and the fixture block b32 are rotated, the threaded hole 311 and the through hole 321 are overlapped with the positioning hole 112, then the locking screw 34 is inserted from the end of the connecting plate 11, and the locking screw 34 is matched and screwed with the threaded hole 311, so that the mounting work of the quick connector for hydrogen pipelines is completed. When the locking screw 34 is firstly screwed out, then the clamping block a31 and the clamping block b32 are rotated outwards, and then the male end connector 20 is pulled out.

The foregoing is only a preferred embodiment of the invention and is not intended to be the only or limiting embodiment of the invention. It should be understood by those skilled in the art that various changes and equivalent substitutions made herein may be made without departing from the scope of the invention as defined by the appended claims.

Claims

1. A quick connector for a fuel cell hydrogen circuit, comprising: a female end connector (10), a male end connector (20) and a locking mechanism (30) characterized in that,

one end of the female end joint (10) is provided with a connecting disc (11), a mounting hole (12) is processed perpendicular to the connecting disc (11), and the inner wall of the mounting hole (12) is provided with a plurality of layers of sealing rings (13);

the male end connector (20) comprises a circular tube (21), the circular tube (21) penetrates through the mounting hole (12), the outer wall of the circular tube (21) is in contact with the sealing ring (13), and a flange (22) is arranged on the periphery of the circular tube (21);

locking mechanical system (30) include fixture block a (31) and fixture block b (32), fixture block a (31) and fixture block b (32) one end all articulate in connection pad (11), the other end detachable with connection pad (11) are connected, fixture block a (31) and fixture block b (32) are located pipe (21) periphery side, during quick-operation joint locking, fixture block a (31) and fixture block b (32) with flange (22) contact, will public end joint (20) compress tightly in female end joint (10).

2. The quick connector for the hydrogen line of a fuel cell according to claim 1, wherein the sealing ring (13) is provided with two layers.

3. The quick coupling for the hydrogen pipeline of the fuel cell as claimed in claim 1, wherein the joint of the flange (22) and the circular tube (21) is provided with an external cone (23), the opening of the mounting hole (12) is provided with an internal cone (14), and the external cone (23) is attached to the internal cone (14).

4. The quick connector for a fuel cell hydrogen pipeline according to claim 1, wherein the fixture block a (31) and the fixture block b (32) are each machined with an arc-shaped notch (33), and the arc-shaped notches (33) are used for pressing the flange (22).

5. The quick coupling for a fuel cell hydrogen pipeline according to claim 1, wherein the connecting plate (11) is provided with two hinge holes (111) and a positioning hole (112), the hinge holes (111) and the positioning hole (112) form an isosceles triangle structure, the connecting line of the two hinge holes (111) is the bottom side, one end of the clamping block a (31) and one end of the clamping block b (32) are respectively hinged to the hinge holes (111), and the other ends are overlapped and connected to the positioning hole (112) through a locking screw (34).

6. The quick connector for a fuel cell hydrogen pipeline as claimed in claim 5, wherein the hinge hole (111) and the positioning hole (112) are through holes.

7. The quick coupling for a fuel cell hydrogen pipeline as claimed in claim 5, wherein the fixture block a (31) is formed with a threaded hole (311), the fixture block b (32) is formed with a through hole (321), and when the quick coupling is locked, the locking screw (34) passes through the positioning hole (112) and the through hole (321) in sequence and is connected with the threaded hole (311).

8. The quick coupling for a hydrogen pipeline of a fuel cell as claimed in claim 1, wherein the thickness of the block a (31) and the block b (32) is the same, a step is formed on the lower surface of the block a (31) at the overlapping portion, a step is formed on the upper surface of the block b (32), and the step surfaces of the block a (31) and the block b (32) can be attached to each other.