CN211328618U - Filter for high-pressure hydrogen, and filtering device and battery car with filter - Google Patents

Abstract

The utility model discloses a filter for high-pressure hydrogen, a filtering device with the filter and a battery car, wherein the filter for high-pressure hydrogen comprises a sealing body; the valve body, the valve body with the contact laminating of seal lower extreme, the valve body includes: the filter comprises a feed inlet, a middle cavity and a discharge outlet, and further comprises a filter element, wherein the filter element is in contact fit with the lower end surface of the middle cavity; the elastic piece, the elastic piece is located the middle intracavity the filter core top, the elastic piece upper end with the seal is connected. The utility model discloses a the seal with the valve body laminating is sealed prevents that the medium from leaking, through the filter core top is equipped with elastic component compression bounce-back, makes the filter core with terminal surface laminating is inseparable under the middle chamber, prevents to treat filterable medium and follows the filter core with just flow out without filtering in the gap of middle chamber to guaranteed that the filter has good filter effect.

Description

Filter for high-pressure hydrogen, and filtering device and battery car with filter

Technical Field

The utility model relates to a hydrogen safety quality field, in particular to filter and have filter equipment and battery car of this filter for high pressure hydrogen.

Background

A Fuel Cell Vehicle (FCV) is an automobile powered by electric power generated by an on-board fuel cell device, and the fuel used by the on-board fuel cell device is high-purity hydrogen gas or high-hydrogen-containing reformed gas obtained by reforming hydrogen-containing fuel. Hydrogen gas is a very flammable, colorless, transparent, odorless, tasteless, and water-insoluble gas, is not easy to store and transport safely, and is light in weight, difficult to touch, and fast in diffusion speed. The hydrogen fuel cell used in the fuel electric vehicle has extremely high requirements on hydrogen, and the purity of the hydrogen needs to meet certain standards. There are many methods for preparing hydrogen, but the obtained hydrogen is easy to mix with impurities such as dust, particles and the like in the processes of preparation, transportation and the like, and the existence of the impurities can affect the safety and performance of subsequent equipment.

The filter to hydrogen among the prior art is not many, and the sealing performance of filter is not enough, and high-pressure hydrogen leaks easily when filtering and causes the incident, and high-pressure hydrogen also passes through in the gap of filter core and other structures easily simultaneously, just discharges through not filtering the filter core to lead to the filter effect poor. Therefore, it is a technical problem to be solved urgently at present to provide a high-pressure hydrogen filter with high sealing performance and good filtering effect.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a high pressure is filter for hydrogen to solve the technical problem that the filter leakproofness among the prior art is low, the filter effect is poor.

The second purpose of the utility model is to provide a filtering method of a high-pressure hydrogen filter to realize high-sealing and effective filtering of high-pressure hydrogen.

In order to achieve one of the above purposes, the utility model adopts the following technical scheme:

the filter for the high-pressure hydrogen comprises a sealing body, wherein the upper end of the sealing body is closed, and the lower end of the sealing body is opened; the valve body, the valve body with the contact laminating of seal lower extreme, the valve body includes: the feed port is formed by the hollow left part of the valve body, the right end of the feed port is provided with an opening, the opening is obliquely arranged in a left-high and right-low manner, and the feed port is used for flowing in a medium to be filtered; the middle cavity is formed by hollow communication of the valve body and the sealing body, and the lower end of the middle cavity is communicated with the opening at the right end of the feed port; the left end of the discharge port is provided with an opening, the opening is obliquely arranged in a left-high-right manner, the left end opening of the discharge port is communicated with the middle part of the middle cavity, the height of the left end opening of the discharge port is higher than that of the right end opening of the feed port, and the discharge port is used for flowing out filtered media; the filter element is positioned in the middle cavity, the lower end faces of the filter element and the middle cavity are in contact fit, and the filter element is used for filtering media; the elastic piece, the elastic piece is located the middle intracavity the filter core top, the elastic piece upper end with the seal is connected.

In the technical scheme, the medium flows in from the feed inlet, is filtered by the middle cavity and flows out from the discharge outlet by arranging the feed inlet, the middle cavity and the discharge outlet which are sequentially communicated, so that the medium is filtered; the sealing body is in contact fit with the valve body to form the middle cavity, and the upper part of the middle cavity is sealed to avoid leakage of the medium during or after filtration; through the arrangement of the elastic piece, two ends of the elastic piece are respectively connected with the filter element and the sealing body, the elastic piece is compressed between the filter element and the sealing body, and the elastic piece exerts rebound force on the filter element, so that the filter element is more tightly attached to the lower end face of the middle cavity, the medium is prevented from flowing out of a gap between the filter element and the valve body without being filtered, and the good filtering effect of the filter is ensured; the middle chamber with the feed inlet discharge gate intercommunication department all is equipped with the opening, and the medium is followed the feed inlet flow direction the middle chamber the discharge gate flows from a left side to the right side promptly, and hydrogen medium's density is little, has the trend of upward movement, through setting up feed inlet right-hand member opening the discharge gate left end opening, and the opening is the height from the left side low in the right side, and the medium is in flow in middle chamber, outflow all need the downstream to pass through the opening during the middle chamber, because the actual motion direction of medium and the motion trend of medium are inconsistent, the medium is obstructed in the motion process to slowed down the medium and passed through open-ended speed, made the medium fully filter in middle intracavity, thereby improved the filter effect of filter.

Further, in the embodiment of the present invention, the inner wall of the lower end face of the middle cavity is provided with an inverted conical surface, the upper end of the inverted conical surface is greater than the diameter of the filter element, and the lower end is less than the diameter of the filter element. The upper end of the inverted conical surface is arranged to be larger than the diameter of the filter element, so that a gap is formed between the filter element and the middle cavity at the upper end of the inverted conical surface, and the disassembly and the assembly of the filter element are facilitated; set up the back taper lower extreme is less than the filter core diameter does benefit to the filter core with the back taper laminating, simultaneously the gravity of filter core itself with under the effect of the elastic force of elastic component, make the filter core has the trend of downstream, through setting up the back taper, makes the filter core with the terminal surface laminating is inseparabler under the middle chamber.

Further, in the embodiment of the present invention, a sealing gasket is disposed on the inner wall of the middle portion of the middle cavity, and the sealing gasket is located at the joint of the lower end face of the sealing body and the upper end face of the valve body. The sealing body lower end face and the valve body upper end face joint are in direct contact with a medium, and the sealing gasket seals the sealing body lower end face and the valve body upper end face joint to enable the sealing body and the valve body to be tightly jointed so as to avoid medium leakage.

Further, in the embodiment of the present invention, the sealing ring is disposed outside the sealing body lower end, and the sealing ring is disposed outside the sealing body lower end and inside the joint of the valve body upper end. Through setting up the sealing washer will the sealing body lower extreme face outside with the valve body up end inside laminating department is sealed, makes the sealing body with the valve body combines more closely, and the wholeness is higher, with the separation of medium in the filter. Simultaneously, the sealing washer can also be waterproof dustproof very, avoids the outside steam of filter or dust to get into in the filter.

Further, in the embodiment of the present invention, the diameter of the upper end of the elastic member is larger than the diameter of the lower end, and the diameter of the upper end of the elastic member is equal to the diameter of the upper end of the sealing body. The diameter of the upper end of the spring is equal to that of the upper end of the sealing body, so that the elastic piece is clamped in the upper end of the sealing body, and the elastic piece and the sealing body are always kept vertically connected, so that the elastic piece and the filter element are always kept vertically, and the elastic force borne by the filter element is always vertical to the filter element; through setting up elastic component upper end diameter is greater than the lower extreme diameter, makes the spring have better centering effect, makes the elasticity that the filter core received concentrates on the central point of filter core puts, thereby makes the filter core with the effect of terminal surface is more strong under the middle chamber, makes the filter core with the laminating of terminal surface is more inseparable under the middle chamber. Simultaneously, the elasticity that the filter core received is concentrated on the central point of filter core puts and the direction of elasticity with the filter core is perpendicular, makes the little and even of atress of filter core on the horizontal direction, thereby guarantees the filter core with the atress of the arbitrary laminating position of terminal surface is the same under the middle chamber, avoids the filter core with terminal surface leads to the medium to reveal directly to flow through not filtering because of the laminating degree is different under the middle chamber the discharge gate guarantees the leakproofness and the filter effect of filter.

Further, in the embodiment of the present invention, the sealing body is in a shape of "convex", a fixing member is disposed outside the sealing body, and the fixing member is engaged with the sealing body. The sealing body is fixedly connected with the valve body by arranging the fixing piece, so that the sealing body is tightly combined with the valve body, and the sealing body compresses the elastic piece right above the filter element; through setting up the mounting with the sealing body block makes the sealing body with the mounting combines closely.

Further, in the embodiment of the present invention, a sleeve set is disposed on the valve body, and the sleeve set is located outside the discharge hole. The clamping sleeve group comprises a first clamping sleeve, a second clamping sleeve and a third clamping sleeve, and the connecting form of the clamping sleeve group can be changed according to different requirements.

Further, in the embodiment of the present invention, the filtering type of the filter element includes at least one of sintering, winding, connecting pipe, external welding, and riveting a filter screen. The filter element is fully distributed with filter holes, and a medium enters the filter element, is filtered and then diffuses into the middle cavity from all directions of the filter element; the contact area of the filter element and the medium is large, the flow resistance borne by the medium during filtering is reduced, and the filtering effect of the medium is enhanced.

Further, in the embodiment of the present invention, the lower end of the valve body is provided with a screw hole, and the position of the screw hole deviates from the central line. The screw hole is used for fixing the filter and penetrating the plate, so that the filter can be conveniently installed.

In order to achieve the second purpose, the utility model adopts the following technical scheme:

a filtering method of a filter for high pressure hydrogen, comprising the steps of:

feeding: the medium enters the filter from the feed inlet, the feed inlet is communicated with the middle cavity, the pressure at the discharge outlet is lower than that at the middle cavity, and the medium flows from the feed inlet to the middle cavity; the density of the medium is less than that of air, the medium moves upwards, the medium is blocked by the inner wall of the valve body above, the subsequent medium is blocked by the medium in front, and the medium slowly moves downwards from the opening at the lower end of the feed port to the middle cavity;

and (3) filtering: the medium flows to the lower end of the middle cavity, the medium moves upwards to enter the filter element, the medium is filtered in the filter element, and particles such as dust in the medium are adsorbed in the filter element; the middle cavity is communicated with the discharge hole, the pressure at the discharge hole is smaller than that in the middle cavity, the medium moves towards the upper right, the medium is blocked by the sealing body above, the subsequent medium is blocked by the medium in front, and the medium slowly flows from the middle cavity to the discharge hole;

discharging: the pressure intensity in the equipment communicated with the discharge port is smaller than the pressure intensity at the discharge port, the medium moves to the position of the equipment communicated with the discharge port at the opening at the left end of the discharge port, the opening at the left end of the discharge port is arranged obliquely downwards, the medium has the tendency of moving upwards and is blocked by the valve body, the medium slowly passes through the opening at the left end of the discharge port, and the medium flows out of the discharge port.

Has the advantages that:

the utility model discloses a terminal surface under the seal with valve body up end laminating department sets up sealed the pad seal the seal lower extreme outside with the inboard laminating department in valve body upper end sets up the sealing washer, makes the seal with the valve body closely combines as an organic wholely, sealed pad with the sealing washer double seal is in the medium separation middle intracavity, the sealing washer can also block outer steam and the dust of filter, avoids medium and the outside air mixed contact in middle intracavity. Through setting up sealed pad with the sealing washer will the seal with the high integration of valve body is as an organic whole to strengthen the sealed effect of filter, prevent that the medium from leaking.

The utility model discloses a set up the back taper, do benefit to the installation of filter core, through the filter core with the laminating of back taper makes the center of filter core is injectd in the center of back taper, the filter core has the trend of gliding automatically under the effect of gravity, makes the filter core with the combination of back taper is inseparabler. The utility model discloses a set up the elastic component, the elastic component upper end is greater than the lower extreme, the elastic component has good centering effect, the elastic component upper end is located seal upper end location lower extreme with filter core central point puts the perpendicular connection, makes the filter core receives perpendicular decurrent elasticity, forces the filter core with the combination of back taper is inseparabler, thereby has strengthened terminal surface under the filter core with the sealed effect of valve body avoids the medium to follow through not filtering the discharge gate flows, thereby is that the filter has good filter effect.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic perspective view of the filter for high-pressure hydrogen of the present invention.

Fig. 2 is a schematic sectional view of the filter for high-pressure hydrogen of the present invention.

Fig. 3 is a plan view of the high-pressure hydrogen filter according to the present invention.

In the attached drawings

1. Cutting ferrule one 2, cutting ferrule two 3, cutting ferrule three

4. Valve body 5, filter element 6 and sealing gasket

7. Sealing ring 8, sealing body 9 and elastic piece

10. Fixing member 11, retaining ring 12 for shaft, and reverse tapered surface

13. A feed inlet 14, a middle cavity 15 and a discharge outlet

Detailed Description

In order to make the objects and technical solutions of the present invention clear and fully described, and the advantages thereof more clearly understood, the embodiments of the present invention are described in further detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of some, but not all, embodiments of the present invention and are not to be considered as limiting, and that all other embodiments can be made by one of ordinary skill in the art without any inventive work.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, 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 is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; 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 meaning 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. But it is obvious. To one of ordinary skill in the art, the embodiments may be practiced without limitation to 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:

as shown in fig. 1 and 2, the filter for high-pressure hydrogen comprises a sealing body 8, wherein the upper end of the sealing body 8 is closed, and the lower end of the sealing body 8 is open, and the sealing body 8 is used for sealing; valve body 4, valve body 4 and the contact laminating of seal lower extreme, valve body 4 includes: the feed inlet 13 is formed by hollowing the left part of the valve body 4, the right end of the feed inlet 13 is provided with an opening, the left end of the opening is higher than the right end of the opening, and the feed inlet 13 is used for flowing in a medium to be filtered; the middle cavity 14 is formed by hollow communication between the valve body 4 and the sealing body, and the lower end of the middle cavity 14 is communicated with the opening at the right end of the feed port 13; the left end of the discharge port 15 is provided with an opening, the opening is obliquely arranged in a left-high and right-low manner, the opening at the left end of the discharge port 15 is communicated with the middle part of the middle cavity 14, the height of the discharge port 15 is higher than that of the feed port 13, and the discharge port 15 is used for flowing out filtered media; the filter element 5 is positioned in the middle cavity 14, the lower end faces of the filter element 5 and the middle cavity 14 are in contact fit, and the filter element 5 is used for filtering media; the elastic piece 9, elastic piece 9 are located the cavity 14 in the centre, above the filter core 5, and the upper end of elastic piece 9 is connected with sealing 8.

In the technical scheme, the medium flows in from the feed inlet 13, is filtered by the middle cavity 14 and flows out from the discharge outlet 15 by arranging the feed inlet 13, the middle cavity 14 and the discharge outlet 15 which are communicated in sequence, so that the medium is filtered; the sealing body 8 is in contact joint with the valve body 4 to form an intermediate cavity 14, and the upper part of the intermediate cavity 14 is sealed to avoid leakage of a medium during or after filtration; by arranging the elastic piece 9, two ends of the elastic piece 9 are respectively connected with the filter element 5 and the sealing body 8, the elastic piece 9 is compressed between the filter element 5 and the sealing body 8, and the elastic piece 9 applies rebound force to the filter element 5, so that the lower end faces of the filter element 5 and the middle cavity 14 are more tightly attached, the medium is prevented from flowing out from a gap between the filter element 5 and the valve body 4 without being filtered, and the good filtering effect of the filter is ensured; middle chamber 14 and feed inlet 13, discharge gate 15 intercommunication department all is equipped with the opening, the medium flows to middle chamber 14 from feed inlet 13, discharge gate 15, flow from a left side to the right side promptly, and the density of hydrogen medium is little, the trend of upward movement has, through setting up feed inlet 13 right-hand member opening, discharge gate 15 left end opening, and the opening is the height from the left to the right side low, the medium is at middle chamber 14 of inflow, all need downstream to pass through the opening when flowing out middle chamber 14, because the actual movement direction of medium is inconsistent with the movement trend of medium, the medium is obstructed in the motion process, thereby the speed that the medium passed through the opening has been slowed down, make the medium fully filter in middle chamber 14, thereby improve the filter effect of filter.

As shown in fig. 1 and 2, the middle chamber 14 has a large middle portion and a small upper end. The filter core 5 is located middle chamber 14, and 9 upper ends of elastic component and seal 8 are connected, and through setting up middle chamber 14, the 14 lower extreme diameters of middle chamber are less than the 5 diameters of filter core, make the terminal surface contact laminating under filter core 5 and the middle chamber 14, and elastic component 9 and the 14 upper end connection of middle chamber, with the rigidity of elastic component 9, make the relative position of elastic component 9 and filter core 5 remain corresponding throughout to it is inseparable to make the terminal surface laminating under filter core 5 and the middle chamber 14.

As shown in fig. 1 and 2, the inner wall of the lower end face of the middle cavity 14 is provided with an inverted conical surface 12, the upper end of the inverted conical surface 12 is larger than the diameter of the filter element 5, and the lower end is smaller than the diameter of the filter element 5. The upper end of the inverted conical surface 12 is larger than the diameter of the filter element 5, so that a gap is formed between the filter element 5 and the middle cavity 14 at the upper end of the inverted conical surface 12, and the disassembly and the assembly of the filter element 5 are facilitated; set up the 12 lower extremes of back taper and be less than the filter core 5 diameter, do benefit to the laminating of filter core 5 and back taper 12, simultaneously, under the effect of the gravity of filter core 5 itself and the elastic force of elastic component 9, make filter core 5 have the trend of downstream, through setting up back taper 12, make the laminating of filter core 5 and middle chamber 14 lower terminal surface inseparabler.

As shown in fig. 1 and 2, the diameter of the upper end of the elastic member 9 is larger than that of the lower end, and the diameter of the upper end of the elastic member 9 is equal to that of the upper end of the sealing body 8. The diameter of the upper end of the spring is equal to that of the upper end of the sealing body 8, so that the elastic piece 9 is clamped in the upper end of the sealing body 8, and the elastic piece 9 and the sealing body 8 are always kept to be vertically connected, so that the elastic piece 9 and the filter element 5 are always kept to be vertical, and the elastic force borne by the filter element 5 is always vertical to the filter element 5; through setting up that the diameter of elastic component 9 upper end is greater than the lower extreme diameter, make the spring have better centering effect, make the elasticity that filter core 5 received concentrate on the central point of filter core 5 and put to make the effect of terminal surface under filter core 5 and the middle chamber 14 stronger, make the laminating of terminal surface under filter core 5 and the middle chamber 14 inseparabler. Simultaneously, the elasticity that filter core 5 received concentrates on the central point of filter core 5 puts and the direction of elasticity is perpendicular with filter core 5, makes filter core 5 atress on the horizontal direction little and even to guarantee under filter core 5 and the intermediate chamber 14 arbitrary laminating position of terminal surface atress all the same, avoid under filter core 5 and the intermediate chamber 14 terminal surface because of the laminating degree difference lead to the medium to reveal not directly flow out discharge gate 15 through filtering, guarantee the leakproofness and the filter effect of filter.

5 lower extreme of filter core and the laminating of back taper 12, 5 upper ends of filter core and elastic component 9 are connected, the big lower extreme in 9 upper ends of elastic component is little, connect the location in 9 upper ends of elastic component and 8 upper ends of seal, make elastic component 9 and 5 perpendicular connections of filter core, the elastic component 9 upper end is big, be compressed by seal 8 easily, the elastic component 9 lower extreme is little, the elasticity that makes 5 filter cores receive is concentrated, the direction of elasticity is perpendicular with the central point of back taper 12, the lower terminal surface that makes 5 filter cores and the cooperation of back taper 12 are more inseparable, the sealed effect of 5 filter cores and back taper 12 is better.

As shown in fig. 1 and 2, a sealing gasket 6 is arranged on the inner wall of the middle part of the middle cavity 14, and the sealing gasket 6 is positioned at the joint of the lower end face of the sealing body 8 and the upper end face of the valve body 4. The sealing ring 7 is arranged on the outer side of the lower end of the sealing body 8, the sealing ring 7 is located on the outer side of the lower end of the sealing body 8 and the inner side joint position of the upper end of the valve body 4, and the sealing ring 7 is located above the outer side of the sealing gasket 8. The seal 8 lower end face and the valve body 4 upper end face are in direct contact with a medium, the seal 8 lower end face and the valve body 4 upper end face are sealed through the sealing gasket 6, the seal 8 and the valve body 4 are tightly attached, and medium leakage is avoided. Through setting up sealing washer 7, with sealing 8 lower extreme face outside and valve body 4 up end inside laminating department sealed, make sealing 8 and valve body 4 combine more inseparabler, the wholeness is higher, with the separation of medium in the filter. Meanwhile, the sealing ring 7 can also prevent water and dust, and water vapor or dust outside the filter is prevented from entering the filter. Through setting up sealed 6 and sealing washer 7 of filling up, seal the filter double-line, make filter inside and external isolated completely, avoid the medium to mix, reveal.

As shown in fig. 1 and 2, the sealing body 8 is in a shape of a letter "convex", a fixing member 10 is provided outside the sealing body 8, and the fixing member 10 is engaged with the sealing body 8. The sealing body 8 and the valve body 4 are fixedly connected by arranging the fixing piece 10, so that the sealing body 8 and the valve body 4 are tightly combined, and the sealing body 8 compresses the elastic piece 9 right above the filter element 5; the sealing body 8 and the fixing body 10 are tightly coupled by providing the fixing body 10 and the sealing body 8 to be engaged with each other.

As shown in fig. 2 and 3, a screw hole is formed at the lower end of the valve body 4, and the position of the screw hole deviates from the central line. The screw hole is used for fixing the filter and penetrating the plate, so that the filter can be conveniently installed. The mounting 10 is located the sealing 8 outside, with the sealing 8 except that the whole cladding of upper end in the mounting 10, the mounting 10 with the sealing 8 and the cladding of 4 laminating positions of valve body in the inboard, to a certain extent with external and filter in separate. The sealing body 8 is "protruding" font, and the mounting 10 is inseparable with the 8 block of sealing body, and axle retaining ring 11 is located to the mounting 10 upper end, and axle retaining ring 11 is located mounting 10 top, and axle retaining ring 11 and sealing body 8 fixed connection. The filter and the equipment are fixedly installed, the fixing piece 10 is loosened when the filter element 5 is replaced, the retainer ring 11 for the shaft is lifted, the sealing body 8 and the fixing piece 10 are simultaneously separated from the valve body 4, and then the spring is taken out to replace the filter element 5. Through setting up retaining ring 11, mounting 10 and the 8 blocks of seal for the shaft, make seal 8 and 10 convenient to detach of mounting, realize the online change of the filter core 5 of filter, avoid pulling down filter replacement filter core 5, labour saving and time saving.

As shown in fig. 1 and 2, a sleeve set is provided on the valve body 4, and the sleeve set is located outside the discharge port 15. The cutting ferrule group includes cutting ferrule one 1, cutting ferrule two 2, cutting ferrule three 3, and the connection form can be changed according to the demand of difference to the cutting ferrule group.

The filtering type of the filter element 5 comprises at least one of sintering, winding, pipe connecting, external welding and filter screen riveting. The filter element 5 is fully distributed with filter holes, and the medium enters the filter element 5 and is diffused into the middle cavity 14 from all directions of the filter element 5 after being filtered; the lower end of the middle cavity 14 is communicated with the right end opening of the feed inlet 13, the lower end of the middle cavity 14 is small, the middle of the middle cavity is large, a medium enters the middle of the middle cavity 14 from the lower end of the middle cavity 14, a medium flow channel is enlarged, the filter element 5 is located in the middle of the middle cavity 14, namely, the medium enters the middle of the middle cavity 14 and directly above the medium, and the medium is rapidly diffused all around in the filter element 5. The medium density is small, the medium moves upwards to the upper end of the middle cavity 14, but the position of the discharge port 15 is positioned at the right side of the middle cavity 14, the medium moves slowly in the middle cavity 14 and is fully contacted with the filter element 5, the flow resistance borne by the medium during filtering is reduced, the retention time is long, and therefore the good filtering effect is achieved.

As shown in fig. 2, the arrows indicate the flow direction of the medium:

a filtering method of a filter for high pressure hydrogen, comprising the steps of:

feeding: the medium enters the filter from the feed port 13, the feed port 13 is communicated with the middle cavity 14, the pressure at the discharge port 15 is lower than that at the middle cavity 14, and the medium flows from the feed port 13 to the middle cavity 14; the density of the medium is less than that of air, the medium moves upwards, the medium is blocked by the inner wall of the valve body 4 above, the subsequent medium is blocked by the medium in front, and the medium slowly moves downwards from the opening at the lower end of the feed port 13 to the middle cavity 14;

and (3) filtering: the medium flows to the lower end of the middle cavity 14, the medium moves upwards and enters the filter element 5, the medium is filtered in the filter element 5, and particles such as dust in the medium are adsorbed in the filter element 5; the middle cavity 14 is communicated with the discharge hole 15, the pressure at the discharge hole 15 is smaller than the pressure in the middle cavity 14, the medium moves to the upper right, the medium is blocked by the sealing body 8 above, the subsequent medium is blocked by the medium in front, and the medium slowly flows from the middle cavity 14 to the discharge hole 15;

discharging: the pressure intensity in the equipment communicated with the discharge port 15 is smaller than the pressure intensity at the discharge port 15, the medium moves to the position of the equipment communicated with the discharge port 15 at the left end opening of the discharge port 15, the left end opening of the discharge port 15 is arranged obliquely downwards, the medium has the tendency of moving upwards and is blocked by the valve body 4, the medium slowly passes through the left end opening of the discharge port 15, and the medium flows out of the discharge port 15.

Example 2:

a filter device comprising the technical solution of any one of the above-described embodiments of the filter for high-pressure hydrogen.

Example 3:

a fuel cell vehicle comprises the technical scheme of the filtering device in the second embodiment.

Although the invention has been described with respect to illustrative embodiments thereof so that those skilled in the art can understand the invention, it is to be understood that the invention is not limited to the disclosed embodiments, but rather, is intended to cover all modifications and variations within the spirit and scope of the invention as defined and defined by the appended claims.

Claims (11)

1. A filter for high-pressure hydrogen is characterized by comprising

The upper end of the sealing body is closed, and the lower end of the sealing body is opened;

the valve body, the valve body with the contact laminating of seal lower extreme, the valve body includes:

the feed inlet is formed by hollowing the left part of the valve body, an opening is formed in the right end of the feed inlet, and the opening is obliquely arranged;

the middle cavity is formed by hollow communication of the valve body and the sealing body, and the lower end of the middle cavity is communicated with the opening at the right end of the feed port;

the left end of the discharge port is provided with an opening, the opening is obliquely arranged, the left end opening of the discharge port is communicated with the middle part of the middle cavity, and the height of the left end opening of the discharge port is higher than that of the right end opening of the feed port;

the filter element is positioned in the middle cavity, and the lower end faces of the filter element and the middle cavity are in contact fit;

the elastic piece, the elastic piece is located the middle intracavity the filter core top, the elastic piece upper end with the seal is connected.

2. The filter according to claim 1, wherein the inner wall of the lower end surface of the middle chamber is provided with an inverted conical surface, the upper end of the inverted conical surface is larger than the diameter of the filter element, and the lower end of the inverted conical surface is smaller than the diameter of the filter element.

3. The filter according to claim 1, wherein a gasket is disposed on the inner wall of the middle portion of the intermediate chamber, and the gasket is located at the joint of the lower end face of the sealing body and the upper end face of the valve body.

4. The filter for high-pressure hydrogen gas according to claim 1, wherein a seal ring is provided on an outer side of a lower end of the seal body, and the seal ring is located at a joint between the outer side of the lower end of the seal body and an inner side of an upper end of the valve body.

5. The filter for high-pressure hydrogen gas according to claim 1, wherein the diameter of the upper end of the elastic member is larger than the diameter of the lower end thereof, and the diameter of the upper end of the elastic member is equal to the diameter of the upper end of the sealing body.

6. The filter for high-pressure hydrogen gas according to claim 1, wherein the sealing body has a "convex" shape, and a fixing member is provided on an outer side of the sealing body, and the fixing member is engaged with the sealing body.

7. The filter according to claim 1, wherein the valve body is provided with a ferrule set, and the ferrule set is located outside the discharge port.

8. A filter for high pressure hydrogen gas as claimed in claim 1, wherein the filter type of the filter element comprises at least one of sintering, winding, pipe jointing, external welding, and riveting.

9. A filter for high pressure hydrogen gas as claimed in claim 1, wherein the valve body is provided at a lower end thereof with a screw hole, the screw hole being located at a position deviated from a center line.

10. A filter device, characterized in that it comprises a filter for high-pressure hydrogen gas as recited in any one of claims 1 to 9.

11. A battery cart, characterized in that it comprises a filter device according to claim 10.

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