CN206708468U - A New Type of High Pressure Hydrogen Check Valve - Google Patents

Abstract

The utility model relates to a novel high-pressure hydrogen one-way valve, which mainly solves the problems in the prior art that the high-pressure hydrogen one-way valve has relatively large volume and weight, low service life and unreliable check seal. The utility model adopts a novel high-pressure hydrogen one-way valve, which includes a valve body and a valve cover connected to each other. A one-way check device is arranged in the cavity formed by the valve body and the valve cover. The check device includes a technical solution of a spring seat provided in the valve body, a ball seat connected to the spring seat, and a ball placed on the ball seat, which solves this problem well and can be used for high-pressure hydrogen flow control.

Description

A New Type of High Pressure Hydrogen Check Valve

technical field

The utility model relates to a novel high-pressure hydrogen check valve.

Background technique

At present, hydrogen is the most abundant and clean energy in the world, and it is the best fuel for fuel cells. As a new energy in the automobile industry, it has been valued and vigorously developed by various countries because of its rich resources, high efficiency and environmental protection. However, the one-way valves used in hydrogenation devices and hydrogen supply systems need to be controlled to be small in size and quality. At present, the volume and weight of domestic high-pressure one-way valves are relatively large and the scope of use is narrow. The maintenance cost is high and the service life is low, which affects the Normal use.

Utility model content

The technical problem to be solved by the utility model is that the volume and weight of the high-pressure hydrogen one-way valve in the prior art are relatively large, the service life is low, and the check seal is not reliable enough. A new high-pressure hydrogen one-way valve is proposed. The high-pressure hydrogen check valve has the characteristics of simple structure, small size, long life, and reliable check seal.

In order to solve the above-mentioned technical problems, the technical scheme adopted by the utility model is as follows: a novel high-pressure hydrogen check valve, including a valve body and a valve cover connected to each other, and a check valve is arranged in the cavity formed by the valve body and the valve cover. The one-way check device includes a spring seat provided in the valve body, a ball seat connected with the spring seat, and a ball placed on the ball seat.

Preferably, the ball seat is located inside the spring seat, the bottom of the ball seat is sleeved and connected with the bottom of the spring seat, and the elastic connection between the bottom of the ball seat and the bottom of the spring seat is realized by a spring.

Preferably, an O-ring 1 that cooperates and seals with the ball is provided between the end of the spring seat and the inner wall of the end of the valve body and the inner wall of the valve cover.

Preferably, each port of the valve body and the valve cover is provided with a ferrule set, and the ferrule set includes a connected rear ferrule and a front ferrule and a ferrule set between the rear ferrule and the front ferrule Set of external coupling nuts.

Preferably, the valve body and the valve cover are connected by a screw, and the sealing of the connection is realized by an O-ring 2 and a gasket.

Preferably, the contact surface on the ball seat with the sphere is a spherical surface.

Preferably, the sphere is steel material.

Preferably, at least 4 guide grooves are provided on the spring seat.

In the utility model, the overall parts are few, the structure is simple, and the volume is small.

In the utility model, the sealing between the valve body and the valve cover can be strengthened by setting the O-ring 2 and the washer;

In the utility model, at least 4 diversion grooves are arranged on the spring seat, and the structure is simple and does not affect the flow;

In the utility model, the contact surface between the ball seat and the sphere is a spherical surface, so as to achieve direct contact with the sphere and realize the centering effect;

In the utility model, the spring seat and the ball seat are elastically connected, and when backflow occurs, the ball can be pushed in time to block the port of the valve cover.

Description of drawings

Fig. 1 is a sectional view of a novel high-pressure hydrogen check valve of the present invention.

In the attached picture:

1. Valve body 2. Ball seat 3. Spring seat

4. Spring 5. O-ring 1 6. Bonnet

7. Ball 8. Gasket 9. O-ring 2

10. Connecting nut 11. Front ferrule 12. Rear ferrule

detailed description

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

[Example 1]:

A new type of high-pressure hydrogen check valve, including a valve body 1 and a valve cover 6 connected to each other, each port of the valve body 1 and the valve cover 6 is provided with a ferrule set connected to an external pipeline, the card The set includes a connected rear ferrule 12 and a front ferrule 11 and a connecting nut 10 arranged outside the rear ferrule 12 and the front ferrule 11, the valve body 1 and the valve cover 6 are connected by a screw , and the sealing of the connection is realized by the O-ring II 9 and the gasket 8, and the O-ring II 9 and the gasket 8 are preferably arranged between the outer side of the end of the valve body 1 and the inner wall of the valve cover 6 ;

A one-way check device is provided in the cavity formed by the valve body 1 and the valve cover 6, and the one-way check device includes a spring seat 3 provided in the valve body 1, and a spring seat 3 connected ball seat 2, the ball 7 placed on the ball seat 2, the spring seat 3 is provided with at least 4 diversion grooves, the contact surface between the ball seat 2 and the ball 7 is Spherical surface, the sphere 7 is made of steel material, the ball seat 2 is located inside the spring seat 3, the bottom of the ball seat 2 is sleeved and connected with the bottom of the spring seat 3, and the ball seat 2 is realized by the spring 4 The elastic connection between the bottom and the bottom of the spring seat 3 is located between the end of the spring seat 3 and the inner side wall of the end of the valve body 1 and the inner side wall of the valve cover 6. 7 Cooperate with the sealing O-ring-5.

Connect the respective ports of the valve body 1 and the valve cover 6 to external pipes through ferrule sets, high-pressure hydrogen flows in through the valve cover 6 port, the intake pressure pushes the ball 7, and the ball 7 simultaneously pushes the ball seat 2 under the contraction of the spring 4 At this time, the high-pressure hydrogen flows to the port of the valve body 1 through the diversion groove around the spring seat 3 and then flows out; when the high-pressure hydrogen flows in from the port of the valve body 1 to generate backflow, the reverse gas pressure pushes the spring seat 3 and stretches on the spring 4 Push and push the sphere 7 to block the port of the valve cover 6 at the same time, and then work together with the O-ring-5 to seal firmly, so as to effectively prevent the backflow of high-pressure hydrogen.

In addition to the above embodiments, the utility model can also have other implementations. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the utility model.

Claims (8)

1. a kind of novel high-pressure hydrogen check valve, include the valve body (1) and bonnet (6) of interconnection, it is characterised in that the valve One-way non-return device is provided with the cavity that body (1) is formed with the bonnet (6), the one-way non-return device includes the valve body (1) spring base (3) being provided with, the ball seat (2), the spheroid that is placed on the ball seat (2) that are connected with the spring base (3) (7)。

2. a kind of novel high-pressure hydrogen check valve according to claim 1, it is characterised in that the ball seat (2) is located at institute It is internal to state spring base (3), ball seat (2) bottom is arranged with the spring base (3) bottom and is connected, and real by spring (4) Existing elastic connection between ball seat (2) bottom and the spring base (3) bottom.

3. a kind of novel high-pressure hydrogen check valve according to claim 1, it is characterised in that positioned at the spring base (3) End and the valve body (1) tip inside wall and the bonnet (6) madial wall between be provided with and the spheroid (7) coordinate The O-ring one (5) of sealing.

A kind of 4. novel high-pressure hydrogen check valve according to claim 1, it is characterised in that the valve body (1) with it is described Each port of bonnet (6) is all provided with cutting ferrule group, and the cutting ferrule group includes connected rear cutting ferrule (12) and preceding cutting ferrule (11) and set The attaching nut (10) of cutting ferrule (12) and the preceding cutting ferrule (11) outside in the rear.

A kind of 5. novel high-pressure hydrogen check valve according to claim 1, it is characterised in that the valve body (1) and described Bonnet (6) is connected using spiral, and the sealing of junction is realized by O-ring two (9) and packing ring (8).

A kind of 6. novel high-pressure hydrogen check valve according to claim 1, it is characterised in that on the ball seat (2) with The contact surface of the spheroid (7) is sphere.

7. a kind of novel high-pressure hydrogen check valve according to claim 1, it is characterised in that the spheroid (7) is steel Material.

8. a kind of novel high-pressure hydrogen check valve according to claim 1, it is characterised in that set on the spring base (3) There is at least four guiding gutter.