CN215635073U

CN215635073U - Stop valve and fuel cell system with same

Info

Publication number: CN215635073U
Application number: CN202121679826.7U
Authority: CN
Inventors: 吴楠
Original assignee: Weishi Energy Technology Co Ltd
Current assignee: Weishi Energy Technology Co Ltd
Priority date: 2021-07-22
Filing date: 2021-07-22
Publication date: 2022-01-25
Anticipated expiration: 2031-07-22

Abstract

The utility model discloses a stop valve and a fuel cell system with the same. This stop valve includes: the shell is provided with a fluid through hole; a shutter, at least a part of which is disposed in the housing and movable relative to the housing, the shutter having an open position for opening the fluid passage hole and a closed position for closing the fluid passage hole, the shutter being provided with a shutter opening, and at least one side of the shutter opening being provided with a rack extending in a shutter moving direction; a drive assembly secured within the housing, the drive assembly adapted to drive the rack to move the shutter between the open and closed positions. According to the stop valve provided by the embodiment of the utility model, the gate plate is provided with the gate plate opening, at least one side of the gate plate opening is provided with the rack extending along the moving direction of the gate plate, the driving assembly is suitable for driving the rack to realize the opening and closing of the fluid through hole, the stop valve is compact in structure, small in occupied space and high in reliability, and the application in a narrow space can be further met.

Description

Stop valve and fuel cell system with same

Technical Field

The utility model relates to the field of fuel cell systems, in particular to a stop valve and a fuel cell system with the same.

Background

In the related art, a fuel cell system usually includes at least one stop valve, for example, a butterfly valve type stop valve or a ball valve type stop valve is used to control the air flow rate at an air inlet pipe and/or an air outlet pipe of a fuel cell stack by the stop valve, however, the distances between an inlet valve port and an outlet valve port of the butterfly valve type stop valve and the ball valve type stop valve are usually not smaller than the diameter of a disc or a sphere, which makes the two types of valves not suitable for applications in smaller space, and meanwhile, for a conventional plug-in plate type valve, the size is large, and the valve is not suitable for a fuel cell system requiring high integration and compact size.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention is directed to a shutoff valve, so as to reduce the space occupied by the shutoff valve.

In order to achieve the purpose, the technical scheme of the utility model is realized as follows:

a shut-off valve comprising: the shell is provided with a fluid through hole; a shutter at least a part of which is disposed in the housing and movable relative to the housing, the shutter having an open position opening the fluid passage hole and a closed position closing the fluid passage hole, the shutter being provided with a shutter opening hole, and at least one side of the shutter opening hole being provided with a rack extending in a movement direction of the shutter; a drive assembly secured within the housing, the drive assembly adapted to drive the rack to move the shutter between the open position and the closed position.

According to some embodiments of the utility model, the drive assembly comprises: the transmission part is connected between the driving part and the rack in a transmission mode, and the extending direction of a driving shaft of the driving part is the same as the extending direction of the rack.

Further, the drive division is driving motor, the transmission portion includes the transmission shaft and fixes epaxial first gear and the second gear of transmission, the transmission shaft is worn to establish the flashboard trompil, first gear with driving motor's drive shaft meshing, the second gear with rack toothing.

Further, the driving shaft is a worm, and the first gear is a worm wheel.

According to some embodiments of the utility model, a position-limiting portion is further disposed in the housing and at least partially located in the shutter opening, the shutter opening has a first position-limiting edge and a second position-limiting edge in the direction of movement of the shutter, and the position-limiting portion selectively abuts against the first position-limiting edge and the second position-limiting edge.

Furthermore, a connecting flange or a pier head joint is arranged on the shell, and a connecting through hole communicated with the fluid through hole is formed in the connecting flange or the pier head joint.

According to some embodiments of the utility model, the housing defines an insert opening for connection to the drive assembly.

According to some embodiments of the utility model, the housing comprises a first housing and a second housing, the fluid through-holes comprising a first fluid through-hole and a second fluid through-hole, the first fluid through-hole being provided on the first housing, the second fluid through-hole being provided on the second housing, the first housing and the second housing being adapted to be connected by a fastener.

Further, an accommodating space suitable for accommodating the flashboard and the driving assembly is arranged in the shell, and a sealing strip for sealing the accommodating space is further arranged between the first shell and the second shell.

Compared with the prior art, the stop valve has the following advantages:

according to the stop valve, the flashboard is provided with the flashboard opening, the rack extending along the moving direction of the flashboard is arranged on at least one side of the flashboard opening, the driving assembly is suitable for driving the rack to open and close the fluid through hole, the stop valve is compact in structure, small in occupied space and high in reliability, and the stop valve can be applied to narrow spaces.

Another objective of the present invention is to provide a fuel cell system to improve the integration of the fuel cell system.

a fuel cell system comprises the stop valve.

Compared with the prior art, the fuel cell provided by the utility model has the following advantages:

the fuel cell system provided by the utility model comprises the stop valve of the embodiment, the stop valve has a compact structure and occupies a small space to improve the integration level of the fuel cell system, such as a cathode inlet and an outlet used for the fuel cell system, when the fuel cell is started, the shutter plate moves to the open position, cathode reactant air (or oxygen) can enter the fuel cell to generate electricity through electrochemical reaction, and when the fuel cell is shut down, the shutter plate moves to the closed position to seal the cathode inlet and the outlet, so that the purpose of isolating air is achieved, and the service life of the fuel cell is ensured.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

FIG. 1 is an exploded view of a shut off valve according to an embodiment of the present invention;

FIG. 2 is a schematic view of a shut-off valve according to an embodiment of the present invention in a closed position;

FIG. 3 is a schematic view of an embodiment of the present invention with the shut off valve in an open position;

FIG. 4 is a schematic view of a gate according to an embodiment of the present invention;

FIG. 5 is a schematic view of a gate and drive assembly according to an embodiment of the present invention;

FIG. 6 is a schematic view of a first housing of an embodiment of the present invention;

FIG. 7 is a schematic view of a second housing of an embodiment of the present invention;

FIG. 8 is a schematic view of a shut-off valve according to an embodiment of the present invention.

Description of reference numerals:

the stop valve 10, the housing 1, the fluid through hole 11, the first fluid through hole 111, the second fluid through hole 112, the first housing 12, the driving element accommodating groove 121, the insert opening 122, the second housing 13, the gate plate groove 131, the gate plate outlet 1311, the sealing groove 132, the gate plate 2, the head portion 21, the body portion 22, the gate plate opening 221, the first limit edge 2211, the second limit edge 2212, the upper edge 2213, the lower edge 2214, the rack 222, the driving element 3, the driving portion 31, the driving shaft 311, the transmission portion 32, the transmission shaft 321, the first gear 322, the second gear 323, the limit portion 4, the pier nose joint 5, the fastener 6, and the sealing strip 7.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

The present invention will be described in detail with reference to fig. 1 to 8 in conjunction with examples.

Referring to fig. 1-8, a shut-off valve 10 according to an embodiment of the present invention includes: the shell 1, the flashboard 2 and the driving component 3, the shell 1 is provided with a fluid through hole 11, at least a part of the flashboard 2 is arranged in the shell 1 and can move relative to the shell 1, for example, a flashboard groove 131 communicated with the fluid through hole 11 is arranged in the shell 1, a flashboard outlet 1311 is arranged on the groove wall of the flashboard groove 131 at the side far away from the fluid through hole 11, the flashboard groove 131 can contain and limit the moving direction of the flashboard 2, the flashboard 2 can partially extend out of the shell 1 through the flashboard outlet 1311 when moving, namely, the size of the shell 1 can be set to be small, so as to save cost. The shutter 2 has an open position where the fluid passage hole 11 is opened and a closed position where the fluid passage hole 11 is closed, and when the shutter 2 is in the open position, the shutter 2 is movable to a position avoiding the fluid passage hole 11 where the fluid passage hole 11 can pass through the fluid, and when the shutter 2 is in the closed position, the shutter 2 is movable to a position inserted into the fluid passage hole 11 where the fluid passage hole 11 cannot pass through the fluid. It should be noted that the fluid may be a gas and/or a liquid, for example, the fluid may be air or oxygen.

Referring to fig. 1 to 5, the shutter 2 is provided with a shutter opening 221, the shutter opening 221 may be a hollow structure at a position of the shutter 2 away from the fluid through hole 11, for example, the shutter 2 includes a head portion 21 and a body portion 22, the head portion 21 is inserted into the fluid through hole 11 and the body portion 22 is away from the fluid through hole 11 when the shutter 2 is in the closed position, and the shutter opening 221 is provided on the body portion 22, wherein a front end of the head portion 21 may be a semicircular plate or a rectangular plate. At least one side of the gate plate opening 221 is provided with a rack 222 extending along the moving direction of the gate plate 2, the driving assembly 3 is adapted to drive the rack 222, so that the gate plate 2 moves between the open position and the closed position, because the rack 222 is arranged in the gate plate opening 221, the rack 222 does not increase the size of the gate plate 2, thereby being beneficial to reducing the occupied space of the gate plate 2, further being beneficial to reducing the size of the stop valve 10, in particular being beneficial to reducing the axial size of the fluid through hole 11, namely the distance between the inlet valve port and the outlet valve port, so that the stop valve 10 can meet the application of narrow space, in particular the application scene with shorter inlet and outlet sizes. Meanwhile, the driving assembly 3 can be fixed in the shell 1, the structure of the stop valve 10 can be compact, the occupied space of the stop valve 10 is reduced, in addition, the driving assembly 3 is arranged in the shell 1, the protection effect of the shell 1 on the driving assembly 3 can be further improved, and the reliability and the service life of the driving assembly 3 are improved.

According to the stop valve 10 of the embodiment of the utility model, the gate plate 2 is provided with the gate plate opening 221, at least one side of the gate plate opening 221 is provided with the rack 222 extending along the moving direction of the gate plate 2, the driving component 3 is suitable for driving the rack 222 to open and close the fluid through hole 11, the structure of the stop valve 10 is compact, the occupied space is small, the reliability is high, and the application in a narrow space can be met.

Referring to fig. 1 and 5, the driving assembly 3 includes: the driving portion 31 and the transmission portion 32, the transmission portion 32 is in transmission connection between the driving portion 31 and the rack 222, it is understood that the driving portion 31 can be used for providing power for moving the shutter 2, and the transmission portion 32 can be used for transmitting the power output by the driving portion 31 to the rack 222 to drive the rack 222 to move. The extension direction of the driving shaft 311 of the driving portion 31 is the same as the extension direction of the rack 222, in other words, the driving shaft 311 can be at least partially opposite to the gate 2 on the side surface of the gate 2, and the driving shaft 311 and the rack 222 are arranged in parallel in space, the transmission portion 32 can change the power direction output by the driving shaft 311, compared with the technical scheme that the driving shaft 311 is perpendicular to the gate 2, the thickness of the stop valve 10 of the embodiment of the utility model is smaller, so that the stop valve 10 can be conveniently applied to a narrow space, and the practicability of the stop valve 10 can be increased. It is understood that the thickness direction of the shut-off valve 10 is the axial direction of the fluid passage hole 11.

Referring to fig. 1 and 5, the driving portion 31 is a driving motor, the transmission portion 32 includes a transmission shaft 321, and a first gear 322 and a second gear 323 fixed on the transmission shaft 321, the transmission shaft 321 penetrates through the shutter opening 221, the first gear 322 is engaged with the driving shaft 311 of the driving motor, and the second gear 323 is engaged with the rack 222, that is, the driving shaft 311 of the driving motor transmits power to the first gear 322, the first gear 322 drives the transmission shaft 321 to rotate, so that the second gear 323 drives the rack 222 to move, thereby realizing the movement of the shutter 2, wherein the driving motor is fixed in the housing 1, and the transmission shaft 321 is rotatably fixed with the housing 1.

Preferably, the module of the first gear 322 is greater than that of the second gear 323, that is, the first gear 322 is a large gear, and the second gear 323 is a small gear, so that the transmission part 32 performs functions of speed reduction and torque increase, thereby reducing the requirement on the output power of the driving motor, and using a driving motor with smaller specification and volume, which is further beneficial to reducing the size of the stop valve 10.

Referring to fig. 1 and 5, the driving shaft 311 is a worm, the first gear 322 is a worm gear, so that the movement and power between the two interleaved shafts of the driving shaft 311 and the driving shaft 321 are realized by the worm and the worm gear, and at the same time, the worm and the worm gear can conveniently realize a self-locking function, so that the shutter 2 is kept at the stop position when the driving motor stops rotating.

Referring to fig. 1-4 and 7, a limiting portion 4 is further disposed in the housing 1, and the limiting portion 4 is at least partially located in the shutter opening 221, the shutter opening 221 has a first limiting edge 2211 and a second limiting edge 2212 in the moving direction of the shutter 2, the limiting portion 4 selectively abuts against the first limiting edge 2211 and the second limiting edge 2212 to limit the accuracy of the opening position and the closing position of the shutter 2, and prevent the shutter 2 from moving too far or excessively, for example, when the shutter 2 moves to the first limiting edge 2211 to abut against the limiting portion 4, the shutter 2 is in the opening position, and when the shutter 2 moves to the second limiting edge 2212 to abut against the limiting portion 4, the shutter 2 is in the closing position.

In addition, the maximum movable stroke of the gate 2 can be limited by the cooperation of the limiting portion 4 with the first limiting edge 2211 and the second limiting edge 2212, and in the moving direction of the gate 2, the distance between the first limiting edge 2211 and the second limiting edge 2212 minus the length of the limiting portion 4 is the maximum movable stroke of the gate 2.

Referring to fig. 4, the gate opening 221 may be a rectangular hole, two opposite sides of the rectangular hole in the moving direction of the gate 2 are a first limiting edge 2211 and a second limiting edge 2212, two sides connecting the first limiting edge 2211 and the second limiting edge 2212 are an upper side 2213 and a lower side 2214, and the rack 222 is located at the upper side 2213 and/or the lower side 2214 of the rectangular hole.

It should be noted that when the rack 222 is located on the upper and

lower sides

2213 and 2214 of the rectangular hole, the second gear 323 can be engaged with the rack 222 on the upper and

lower sides

2213 and 2214 of the rectangular hole at the same time to improve the stability of the shutter 2 during movement.

Referring to fig. 8, a connecting flange or a pier nose joint 5 is provided on the housing 1, and a connecting through hole communicated with the fluid through hole 11 is provided on the connecting flange or the pier nose joint 5, so as to facilitate the connection of the valve of the shutter 2 with the counterpart member, and the fluid through hole 11 is formed as a section of the fluid flow path of the counterpart member, and whether the fluid flow path is unblocked is controlled by adjusting the position of the shutter 2.

Referring to fig. 1, a plug-in port 122 connected to the driving assembly 3 is formed in the housing 1, and the driving assembly 3 can be electrically connected to the outside through the plug-in port 122, so as to supply power to the driving motor, control the rotation direction of the driving shaft 311, and switch the shutter 2 between the open position and the closed position.

Referring to fig. 1, 6 and 7, the housing 1 includes a first housing 12 and a second housing 13, the fluid through hole 11 includes a first fluid through hole 111 and a second fluid through hole 112, the first fluid through hole 111 is provided on the first housing 12, the second fluid through hole 112 is provided on the second housing 13, and the first housing 12 and the second housing 13 are adapted to be connected by a fastener 6, that is, the first housing 12 and the second housing 13 are detachably connected to facilitate assembly and later maintenance of the shutter 2 and the drive assembly 3.

Alternatively, the fastening member 6 is a bolt, and the first housing 12 and the second housing 13 are provided with a plurality of fixing holes adapted to cooperate with the bolt, and the bolt can pass through the fixing holes to fix the first housing 12 and the second housing 13 together.

In some embodiments of the present invention, an accommodating space adapted to accommodate the shutter 2 and the driving assembly 3 is provided in the housing 1, and a sealing strip 7 for sealing the accommodating space is further provided between the first housing 12 and the second housing 13 to ensure the sealing property of the connection between the first housing 12 and the second housing 13.

Referring to fig. 1 to 7, the accommodating space may be a space enclosed by a gate plate groove 131 and a driving assembly accommodating groove 121, the driving assembly accommodating groove 121 may be configured to accommodate and fix a driving assembly 3, wherein the driving assembly 3 accommodating groove 121 is disposed on the first housing 12, and a groove wall of the driving assembly 3 accommodating groove 121 is provided with a plug-in opening 122 communicated with the outside, the gate plate groove 131 is disposed on the second housing 13, the limiting portion 4 is a limiting column disposed in the gate plate groove 131, the second housing 13 is provided with a sealing groove 132 adapted to fix a sealing strip 7 at an outer periphery of the gate plate groove 131, when the sealing strip 7 is fixed in the sealing groove 132, the sealing strip 7 may protrude out of the sealing groove 132, so as to compress the sealing strip 7 when the first housing 12 and the second housing 13 are assembled, so as to ensure a sealing effect of the sealing strip 7.

A fuel cell system according to another aspect embodiment of the present invention includes the shutoff valve 10 of the above-described embodiment. The shut-off valve 10 can be provided in a highly integrated, compact fuel cell system, such as a cathode inlet and outlet for a fuel cell system, so that when the fuel cell is turned on, the shutter 2 is moved to an open position, cathode reactant air (or oxygen) can enter the fuel cell to generate electricity through electrochemical reaction, and when the fuel cell is turned off, the shutter 2 is moved to a closed position to close the cathode inlet and outlet for the purpose of isolating air to ensure the service life of the fuel cell.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A shut-off valve, comprising:

the device comprises a shell (1), wherein a fluid through hole (11) is formed in the shell (1);

a shutter plate (2), at least a portion of the shutter plate (2) being disposed within the housing (1) and being movable relative to the housing (1), the shutter plate (2) having an open position at which the fluid passage hole (11) is open and a closed position at which the fluid passage hole (11) is closed, the shutter plate (2) being provided with a shutter plate opening (221), and at least one side of the shutter plate opening (221) being provided with a rack (222) extending in a moving direction of the shutter plate (2);

a drive assembly (3), said drive assembly (3) being fixed within said housing (1), said drive assembly (3) being adapted to drive said rack (222) to move said shutter (2) between said open position and said closed position.

2. A shut-off valve according to claim 1, characterized in that the drive assembly (3) comprises: the driving mechanism comprises a driving part (31) and a transmission part (32), wherein the transmission part (32) is in transmission connection between the driving part (31) and the rack (222), and the extension direction of a driving shaft (311) of the driving part (31) is the same as the extension direction of the rack (222).

3. The shut-off valve according to claim 2, wherein the driving portion (31) is a driving motor, the transmission portion (32) comprises a transmission shaft (321) and a first gear (322) and a second gear (323) fixed on the transmission shaft (321), the transmission shaft (321) is provided with the shutter opening (221) in a penetrating way, the first gear (322) is meshed with the driving shaft (311) of the driving motor, and the second gear (323) is meshed with the rack (222).

4. A stop valve according to claim 3, wherein the drive shaft (311) is a worm and the first gear (322) is a worm gear.

5. The stop valve according to claim 1, wherein a position-limiting portion (4) is further provided in the housing (1), and the position-limiting portion (4) is at least partially located in the shutter opening (221), the shutter opening (221) has a first position-limiting edge (2211) and a second position-limiting edge (2212) in the moving direction of the shutter (2), and the position-limiting portion (4) selectively stops against the first position-limiting edge (2211) and the second position-limiting edge (2212).

6. The stop valve according to claim 1, characterized in that a connecting flange or a pier joint (5) is arranged on the housing (1), and a connecting through hole communicated with the fluid through hole (11) is arranged on the connecting flange or the pier joint (5).

7. A valve according to claim 1, characterized in that the housing (1) is provided with an insert opening (122) for connection to the drive assembly (3).

8. A stop valve according to any one of claims 1-7, wherein the housing (1) comprises a first housing (12) and a second housing (13), the fluid through hole (11) comprising a first fluid through hole (111) and a second fluid through hole (112), the first fluid through hole (111) being provided on the first housing (12), the second fluid through hole (112) being provided on the second housing (13), the first housing (12) and the second housing (13) being adapted to be connected by a fastener (6).

9. A stop valve according to claim 8, wherein a receiving space adapted to receive the shutter (2) and the drive assembly (3) is provided in the housing (1), and a sealing strip (7) for sealing the receiving space is further provided between the first housing (12) and the second housing (13).

10. A fuel cell system characterized by comprising the shut-off valve according to any one of claims 1 to 9.