CN114110218A

CN114110218A - A check valve and a novel fuel cell stack using the check valve

Info

Publication number: CN114110218A
Application number: CN202111636200.2A
Authority: CN
Inventors: 马君; 陆嘉君; 江章亮; 王琪; 张金铮; 曾富强
Original assignee: Zhangjiagang Furui Valve Co ltd
Current assignee: Zhangjiagang Furui Valve Co ltd
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2022-03-01

Abstract

The application relates to the technical field of check valves, specifically be a check valve and use novel fuel cell galvanic pile of this check valve, novel check valve for fuel cell galvanic pile includes: the outer part of the valve cover is provided with a limiting ring; the fixing ring is mounted at the bottom of the valve cover, an arc-shaped through groove is formed in the bottom of the valve cover, and a fixing column is mounted at the top of the fixing ring; the valve body is arranged at the bottom of the valve cover; the beneficial effects are that: the fixing ring provided by the utility model has the advantages that the top of the fixing ring is provided with the fixing column, the inside of the fixing column is provided with the screw thread, the inside of the fixing column is provided with the spring, and the bottom of the spring is provided with the baffle plate, so that when the connecting rod is sleeved in the fixing column, the spring can push the connecting rod to prevent the connecting rod from loosening; the check plate is sleeved outside the connecting rod, has elasticity and small flow resistance, and can be pressed against the bottom of the valve cover to perform a check function during check.

Description

Check valve and novel fuel cell stack using same

The application relates to the technical field of check valves, in particular to a check valve and a novel fuel cell stack using the same.

Background

A fuel cell is a chemical device that directly converts chemical energy of fuel into electrical energy, and is also called an electrochemical generator. The fuel cell stack is a stack of a plurality of fuel cells as described above, and achieves the purpose of obtaining a voltage for practical use. The existing fuel cell stack generally adopts liquid hydrogen or LNG as fuel, and the storage temperature of the liquid is extremely low, so that parts in a fuel cell stack system are required to adapt to an ultralow temperature environment.

Wherein the check valve functions in the fuel cell stack to control the flow of cryogenic fluid. The Chinese patent application with the publication number of CN206738648U discloses a low-temperature vacuum check valve, which comprises a valve body, a valve cover and a sealing assembly, wherein the valve cover is installed on the valve body, the sealing assembly is arranged in the valve body and used for separating an inlet and an outlet of the valve body, and a guide sleeve is arranged between the sealing assembly and the valve cover.

However, when the check valve is used, the low-temperature medium has a small flow rate and a large flow resistance, so that the pressure drop of the low-temperature medium at the check valve is obvious, and the operation of the fuel cell stack system is influenced.

Disclosure of Invention

The utility model aims at providing a check valve and use novel fuel cell pile of this check valve to solve the flow that the check valve that proposes among the above-mentioned background art is little and the flow resistance is big, the obvious problem of pressure drop.

In order to achieve the above purpose, the present application provides the following technical solutions: a check valve and a novel fuel cell stack using the same, the novel check valve for the fuel cell stack comprises:

the outer part of the valve cover is provided with a limiting ring;

the check piece comprises a fixing ring, the fixing ring is installed at the bottom of the valve cover, an arc-shaped through groove is formed in the bottom of the valve cover, a fixing column is installed at the top of the fixing ring, a connecting rod is sleeved inside the fixing column, and a check plate is installed outside the connecting rod; and

the valve body is arranged at the bottom of the valve cover.

Preferably, the outside cover of valve gap is equipped with the multiunit sealing washer, and the gasket is installed to the bottom of spacing ring, and the sealing washer is installed to the top and the bottom of spacing ring.

Preferably, the arc through grooves are formed in the bottom of the valve cover and are semicircular, and the arc through grooves are provided with two groups.

Preferably, the baffle is installed to solid fixed ring's bottom, and the fixed column is installed at solid fixed ring's top, and the inside of fixed column is provided with the screw thread.

Preferably, a spring is mounted inside the fixed column, one end of the spring is connected with the inner wall of the fixed column, and the other end of the spring is connected with the baffle.

Preferably, the bottom of the fixing ring is provided with a connecting rod, and the outside of the connecting rod is sleeved with a check plate.

Preferably, the check plate has elasticity, and flexible not with solid fixed ring laminating.

Preferably, the baffle is in the same plane with the bottom of the fixed column inner groove after being ejected by the spring.

In addition, in order to achieve the purpose, the embodiment of the application also discloses a novel fuel cell stack using the check valve, which comprises the check valve.

Compared with the prior art, the beneficial effects of this application are:

this application is achieved by

The top of the fixing ring is provided with the fixing column, threads are arranged inside the fixing column, the spring is arranged inside the fixing column, and the bottom of the spring is provided with the baffle plate, so that when the connecting rod is sleeved in the fixing column, the spring can push the connecting rod, and the connecting rod is prevented from loosening; the non-return plate is sleeved outside the connecting rod, the non-return plate has elasticity and small flow resistance, and the non-return plate can prop against the bottom of the valve cover to play a non-return role during non-return.

Drawings

FIG. 1 is a schematic perspective view of the present application;

FIG. 2 is a schematic perspective view of the present application;

fig. 3 is a schematic sectional three-dimensional structure of the valve cover of the present application.

In the figure: valve gap 1, sealing washer 2, solid fixed ring 3, arc logical groove 4, baffle 5, check board 6, connecting rod 7, valve body 8, spacing ring 9, gasket 10, spring 11, fixed column 12.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clear and fully described, embodiments of the present invention are further described in detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of some embodiments of the invention and are not limiting of the invention, and that all other embodiments obtained by those of ordinary skill in the art without the exercise of inventive faculty are within the scope of the invention.

In the description of the present invention, it should be noted that the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "a," "an," "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

For the purposes of simplicity and explanation, the principles of the embodiments are described by referring mainly to examples. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the embodiments. It will be apparent, however, to one skilled in the art that the embodiments may be practiced without these specific details. In some instances, well-known methods and structures have not been described in detail so as not to unnecessarily obscure the embodiments. In addition, all embodiments may be used in combination with each other.

Example 1

Referring to fig. 1 to 3, the present application provides a check valve for a novel fuel cell stack, including: the valve comprises a valve cover 1, wherein a limiting ring 9 is arranged outside the valve cover 1, a plurality of groups of sealing rings 2 are sleeved outside the valve cover 1, gaskets 10 are arranged at the bottom of the limiting ring 9, the sealing rings 2 are arranged at the top and the bottom of the limiting ring 9, the limiting ring 9 is pressed against the top of a valve body 8, the sealing rings 2 play a role in sealing, and the gasket 10 at the bottom of the limiting ring 9 plays a role in sealing;

the check piece comprises a fixing ring 3, the fixing ring 3 is installed at the bottom of the valve cover 1, the bottom of the valve cover 1 is provided with an arc through groove 4, the top of the fixing ring 3 is provided with a fixing column 12, the arc through groove 4 is formed at the bottom of the valve cover 1 and is in a semicircular ring shape, the arc through grooves 4 are provided with two groups, the check plate 6 is elastic, a medium can flow through the arc through groove 4, and when the medium flows back, the check plate 6 can block the bottom of the fixing ring 3 to cover the arc through groove 4;

the bottom of the fixing ring 3 is provided with a baffle 5, the top of the fixing ring 3 is provided with a fixing column 12, threads are arranged inside the fixing column 12, the connecting rod 7 is sleeved in the fixing column 12, the baffle 5 is pushed into the fixing column 12 by the connecting rod 7, the spring 11 is compressed, and the connecting rod 7 fixes the check plate 6 at the bottom of the fixing ring 3;

a spring 11 is arranged in the fixed column 12, one end of the spring 11 is connected with the inner wall of the fixed column 12, the other end of the spring 11 is connected with the baffle 5, the baffle 5 is pushed into the fixed column 12 by the connecting rod 7, and the spring 11 is compressed;

the bottom of the fixing ring 3 is provided with a connecting rod 7, a check plate 6 is sleeved outside the connecting rod 7, the check plate 6 has elasticity, the connecting rod 7 fixes the check plate 6 at the bottom of the fixing ring 3, the check plate 6 covers the arc-shaped through groove 4, and the bottom of the valve cover 1 is sleeved in the valve body 8;

the valve body 8 is arranged at the bottom of the valve cover 1, the bottom of the valve cover 1 is sleeved in the valve body 8, and the limiting ring 9 abuts against the top of the valve body 8.

The anti-return valve comprises a valve cover 1, wherein a limiting ring 9 and a non-return piece are mounted outside the valve cover 1, the non-return piece comprises a fixing ring 3, the fixing ring 3 is mounted at the bottom of the valve cover 1, an arc-shaped through groove 4 is formed in the bottom of the valve cover 1, a fixing column 12 is mounted at the top of the fixing ring 3, a connecting rod 7 is sleeved inside the fixing column 12, and a non-return plate 6 is mounted outside the connecting rod 7; and the valve body 8 is arranged at the bottom of the valve cover 1, the check plate 6 shields the arc-shaped through groove 4, and when the material flows out of the arc-shaped through groove 4, the check plate 6 can be bent, the flow resistance of the check plate 6 is small, and the flow cannot be obstructed.

Example 2

On the basis of embodiment 1, in order to fix the connecting rod 7, the baffle 5 is installed at the bottom of the fixing ring 3, the fixing column 12 is installed at the top of the fixing ring 3, threads are arranged inside the fixing column 12, the spring 11 is installed inside the fixing column 12, one end of the spring 11 is connected with the inner wall of the fixing column 12, the other end of the spring 11 is connected with the baffle 5, after the connecting rod 7 is sleeved in the fixing column 12, under the pushing of the spring 11, the baffle 5 pushes the connecting rod 7, and the connecting rod 7 is prevented from loosening.

Example 3

On embodiment 2's basis, in order to prevent that the material can flow back in leading to groove 4, the bottom of solid fixed ring 3 is provided with connecting rod 7, the outside cover of connecting rod 7 is equipped with check plate 6, check plate 6 has elasticity, the flexible is not laminated with solid fixed ring 3, will make check plate 6 buckle after the material normally flows from top to bottom in leading to groove 4 from the arc, when the material backward flow, the surface of solid fixed ring 3 will be laminated to check plate 6, prevent to flow back.

Establish connecting rod 7 cover in fixed column 12, connecting rod 7 pushes up baffle 5 in fixed column 12, spring 11 is compressed, connecting rod 7 fixes check plate 6 in solid fixed ring 3's bottom, check plate 6 covers arc through groove 4, establish valve body 8 with the bottom cover of valve gap 1, spacing ring 9 pushes up at valve body 8's top, multiunit sealing washer 2 plays sealed effect, the gasket 10 of spacing ring 9 bottom plays sealed effect, when the inside medium flows down, check plate 6 is elastic, can make the medium flow through arc through groove 4, when having the medium backward flow, check plate 6 can keep off in solid fixed ring 3's bottom, pass through groove 4 with the arc and cover.

Although the illustrative embodiments of the present application have been described above to enable those skilled in the art to understand the present application, the present application is not limited to the scope of the embodiments, and various modifications within the spirit and scope of the present application defined and determined by the appended claims will be apparent to those skilled in the art from this disclosure.

Claims

1. A check valve, characterized in that: the check valve comprises:

The valve cover (1), the outside of the valve cover (1) is installed with a limit ring (9);

The non-return piece includes a fixing ring (3), the fixing ring (3) is installed on the bottom of the valve cover (1), and the bottom of the valve cover (1) is provided with an arc-shaped through groove (4), and the fixing ring (3) ) is installed with a fixing column (12) at the top, a connecting rod (7) is sleeved inside the fixing column (12), and a non-return plate (6) is installed on the outside of the connecting rod (7); and

The valve body (8) is arranged at the bottom of the valve cover (1).

2. A check valve according to claim 1, characterized in that: a plurality of sets of sealing rings (2) are sleeved on the outside of the valve cover (1), and a gasket is installed at the bottom of the limit ring (9). Pieces (10), and sealing rings (2) are installed on the top and bottom of the limiting ring (9).

3. A check valve according to claim 1, characterized in that: the arc-shaped through groove (4) is opened at the bottom of the valve cover (1), in the form of a semi-circular ring, and the arc-shaped through groove (4) ) has two groups.

4. A check valve according to claim 1, characterized in that a baffle plate (5) is installed at the bottom of the fixing ring (3), and a fixing column (12) is installed at the top of the fixing ring (3) , and the interior of the fixing column (12) is provided with a thread.

5. A check valve according to claim 4, characterized in that: a spring (11) is installed inside the fixing column (12), and one end of the spring (11) is connected to the inner wall of the fixing column (12), The other end of the spring (11) is connected to the baffle plate (5).

6. A check valve according to claim 5, characterized in that: the bottom of the fixing ring (3) is provided with a connecting rod (7), and the outer part of the connecting rod (7) is sleeved with a check plate ( 6).

7 . The check valve according to claim 6 , wherein the check plate ( 6 ) has elasticity and can be bent so as not to fit with the fixing ring ( 3 ). 8 .

8 . The check valve according to claim 6 , wherein the baffle plate ( 5 ) is on the same plane as the bottom of the inner groove of the fixing column ( 12 ) after being ejected by the spring ( 11 ). 9 .

9. A novel fuel cell stack using the check valve, characterized by comprising the check valve described in claims 1-8.