CN221287218U

CN221287218U - Multi-pass filter

Info

Publication number: CN221287218U
Application number: CN202322590489.XU
Authority: CN
Inventors: 黄志伟; 华磊; 孟德弟; 李金才
Original assignee: Shanghai Usui Engine Parts Co ltd
Current assignee: Shanghai Usui Engine Parts Co ltd
Priority date: 2023-09-24
Filing date: 2023-09-24
Publication date: 2024-07-09
Anticipated expiration: 2033-09-24

Abstract

The utility model relates to a multi-pass filter, which comprises a filter shell, a filter joint and a filter element; the filter shell is engaged with the filter joint through threads to form a multi-way cavity for wrapping the filter element. The component plays a role in multi-pass and filtering, in the vehicle-mounted high-pressure hydrogen storage system, the multi-pass connection requirement between pipelines exists, and the function of filtering and purifying the gas in the hydrogen storage system is also provided, if the multi-pass filter and the filter are purchased separately, the cost is increased, the volume and the weight of the hydrogen storage system are increased, and the multi-pass filter integrates the multi-pass function and the filtering function, so that the vehicle-mounted high-pressure hydrogen storage system is light and convenient, and the leakage risk point of the hydrogen supply system is reduced; the utility model is suitable for the technical field of gas purification of the vehicle-mounted hydrogen supply system with the pressure of 20MPa and above for the hydrogen energy automobile.

Description

Multi-pass filter

Technical Field

The application relates to the technical field of filtering structures, in particular to a multi-pass filter for a vehicle-mounted high-pressure hydrogen supply system.

Background

Both fuel cell vehicles and hydrogen-powered engine vehicles are new energy vehicles that use hydrogen as their energy supply. The hydrogen source is wide, and the hydrogen can be obtained not only by purifying and separating industrial byproduct gas, but also by utilizing solar energy and water energy to electrolyze water.

The vehicle-mounted high-pressure hydrogen storage system is used as a storage module of the vehicle-mounted hydrogen, so that the extreme sealing of the hydrogen is realized, and the cleanliness of the supplied hydrogen is ensured. On the one hand, the hydrogen has higher cleanliness during hydrogenation, and on the other hand, the storage and transmission units such as hydrogen storage bottles, valves and pipelines are guaranteed to have certain cleanliness. In practical applications, to ensure the cleanliness of the end-use gas, a filter is often provided in the hydrogen storage system as a guarantee of its cleanliness.

The independent filter not only occupies large space and has heavier mass, but also increases the assembly points of the transmission pipeline of the hydrogen storage system, increases the number of leakage points and increases the leakage risk.

Disclosure of utility model

In view of the above, the utility model provides a multi-pass filter, which aims to solve the problems of large occupied space, heavy weight and more leakage points of a hydrogen storage system of an independent filter, and particularly relates to a multi-pass filter.

The application is based on the fact that a certain connecting pipeline exists in the vehicle-mounted high-pressure hydrogen storage system, and multiple pieces are needed to be connected between the pipelines. The filter is used as a hydrogen purification unit of the vehicle-mounted high-pressure hydrogen storage system, and is used for ensuring that all hydrogen flowing downstream is filtered. Each position where it is assembled with the pipeline is a leakage risk point, generally, a multi-pass three ports are connected with the pipeline, and a straight-through filter has two ports connected with the pipeline, and five leakage risk points are all provided. By adopting the multi-pass filter, only three ports are connected with the pipeline, and the number of leakage points is three.

The utility model aims at realizing the following technical scheme:

a multi-pass filter for a high pressure hydrogen supply system on board a motor vehicle, characterized in that it comprises a filter housing, a filter joint, a filter cartridge; the filter shell is engaged with the filter joint through threads to form a multi-way cavity for wrapping the filter element.

The filter element is contacted with the inner wall of the filter joint, the contact position has certain sealing capability, and all fluid passing through the filter can be filtered through the filter element.

The spring is compressed between the filter element and the slot of the filter housing; thereby ensuring the stable position and sealing of the filter element. Further, to ensure stable cartridge position and sealing between cartridge and filter joint; a spring is arranged in the multi-pass filter, one end of the spring is propped against the plane of the filter element, and the other end is propped against the plane of the inner cavity of the filter joint. The spring is in a compressed state.

The two ends of the spring need to be ground flat.

The filter shell and the filter joint ensure sealing through conical surfaces.

The opening of the filter joint is the fluid outlet of the multi-pass filter.

The filter element is made of metal, SUS316L is adopted, and the cross section of the filter element is U-shaped, so that the filter element is suitable for the actual working condition of a vehicle-mounted high-pressure hydrogen storage system.

The filter shell and the filter joint are connected through screw thread assembly. The two parts are provided with conical surface characteristic structures, the filter shell is provided with inner conical surface characteristics, the filter joint is provided with outer conical surface characteristics, and the sealing effect is achieved through the mutual contact and extrusion of the inner conical surface and the outer conical surface during assembly.

The filter housing has two openings, namely, a filter inlet A and a filter inlet B, in addition to the filter joint assembly position, as the inlet end of the multi-pass filter of the utility model, and the opening at the other end of the filter joint is the outlet end of the multi-pass filter of the utility model in addition to the filter housing assembly position.

The multi-pass filter is connected with a pipeline of a vehicle-mounted hydrogen storage system (figure 4) through threads and conical surfaces at the inlet end and the outlet end, and is connected into the hydrogen storage system.

The central axes of the filter inlet A and the filter inlet B of the multi-pass filter are collinear, and the central axis of the inlet is perpendicular to the central axis of the filter outlet, so that the pipeline arrangement assembled with the multi-pass filter is convenient.

To facilitate the securement of the multi-pass filter of the present application in a vehicle-mounted high pressure hydrogen storage system, a threaded bore may be provided in the filter housing (fig. 3).

When the filter element of the multi-pass filter is maintained, the connection between the nut and the outlet end of the filter joint is loosened (figure 4), the pipeline is moved out of the conical surface of the outlet end of the filter joint, the threaded connection between the filter joint and the filter shell is loosened, the filter joint is taken out, the filter element is exposed, and the filter element is taken out for maintenance.

The application plays a role in multi-pass and filtration, in the vehicle-mounted high-pressure hydrogen storage system, the multi-pass connection requirement between pipelines exists, and the function of filtering and purifying the gas in the hydrogen storage system is also provided, if the multi-pass filter and the filter are purchased separately, the cost is increased, the volume and the weight of the hydrogen storage system are increased, and the multi-pass filter integrates the multi-pass function and the filtering function, so that the application is light and convenient, and the leakage risk point of the hydrogen supply system is reduced. The application is suitable for the technical field of gas purification of the vehicle-mounted hydrogen supply system with the pressure of 20MPa and above for the hydrogen energy automobile.

Compared with the prior art, the application has the following characteristics:

(1) The application integrates the functions of the multi-pass filter on one part;

(2) The application has the advantages of small volume and light weight;

(3) The application has less leakage points and increases the tightness of the whole hydrogen storage system.

Drawings

FIG. 1 is a cross-sectional view of a multi-pass filter according to an embodiment of the utility model

FIG. 2 is an exploded view of a multiple pass filter according to an embodiment of the present utility model

FIG. 3 is an external view of a multi-pass filter according to an embodiment of the present utility model

FIG. 4 is a schematic diagram showing a connection mode between an inlet and an outlet of a multi-pass filter and a pipeline according to an embodiment of the present utility model

FIG. 5 is an external view of a five-pass filter according to an embodiment of the present utility model

Description of the reference numerals

1: The filter housing is provided with a plurality of openings,

2: A filter joint, a filter joint and a filter,

3: The filter element is provided with a plurality of grooves,

4: The spring is arranged on the inner side of the cylinder,

5: A threaded hole is formed in the inner wall of the sleeve,

6: The cavity of the filter is provided with a cavity,

7: The inlet a of the filter is provided with a filter inlet a,

8: The inlet B of the filter is provided with a filter,

9: A filter outlet.

Detailed Description

The invention is analyzed in connection with the following examples.

It should be noted that the features of the present utility model may be combined with each other without conflict.

Example 1

Referring to the drawings, embodiment 1 is a three-way filter.

Fig. 1 is a schematic cross-sectional view of the structure of the present application. The multi-pass filter comprises a filter housing 1, a filter joint 2, a filter element 3 and a spring 4, and can be referred to as an exploded view of fig. 2.

First, the multi-pass filter is a three-way, and is composed of a filter housing 1 and a filter joint 2, which are connected by a thread of M20X1.5 mm and both have conical surface structure characteristics, when the threads are meshed, the conical surface characteristics of the filter housing and the filter joint are pushed to contact and squeeze, and a sealing cavity 6 with the diameter of 14mm is formed between the filter housing and the filter joint. And secondly, the multi-pass filter has a filtering function, namely, a filter element is arranged in the sealed cavity, and when fluid flows through the cavity of the multi-pass filter to the downstream use end, the fluid must flow through the filter element, so that the filtering purpose is achieved.

It should be noted that the flow of the multi-pass filter fluid of this application is directional, with two openings in the filter housing (filter inlet A7, filter inlet B8) being the inlet ends and the opening 9 in the filter connector being the outlet ends, and with a sign on the outer surface of the multi-pass filter that indicates the flow direction of the fluid (fig. 3).

It should be noted that, in order to ensure the stable position of the filter element and the stable sealing between the filter element and the filter joint, a spring 4 is used to apply a certain pressure to the filter element, and the two ends of the spring are ground flat, so as to ensure the uniformity of the stress.

It should be noted that, to facilitate the layout of the entire hydrogen storage system pipeline, the two inlets (filter inlet A7, filter inlet B8) of the multi-pass filtration of the present application have collinear central axes, and the central axis of the outlet 9 is perpendicular to the central axis of the inlet.

It should be noted that, in order to increase the rigidity of the whole hydrogen storage pipeline, the application is provided with 4M 5mm threaded holes (refer to fig. 3) through the filter, and the threaded holes 5 can be fixed on the frame of the hydrogen storage system.

It should be noted that the filter element of the multi-pass filter of the application adopts SUS316L powder to sinter into a U-shaped filter element, and the filtering precision is 10um.

Example 2

Referring to fig. 5, embodiment 2 is a five-pass filter.

FIG. 1 is a schematic cross-sectional view of a structure embodying the present application. The multi-pass filter comprises a filter housing, a filter joint, a filter element and a spring, and can be referred to as an exploded view of fig. 2.

First, the multi-pass filter is a five-pass filter, which is composed of a filter housing and a filter joint, and both are connected by a thread of M20×1.5mm and have conical surface structural characteristics, when the threads are engaged, the conical surface characteristics of the filter housing and the filter joint are pushed to contact and squeeze, and a sealed cavity with the diameter of 14mm is formed between the filter housing and the filter joint. And secondly, the multi-pass filter has a filtering function, namely, a filter element is arranged in the sealed cavity, and when fluid flows through the cavity of the multi-pass filter to the downstream use end, the fluid must flow through the filter element, so that the filtering purpose is achieved.

It should be noted that the five pass filter has a directional flow of fluid therethrough, wherein the four openings in the filter housing are inlet ends and the openings in the filter connector are outlet ends.

It should be noted that, in order to ensure the stable position of the filter element and the stable sealing of the filter element and the filter joint, a spring is used to provide a certain pressure to the filter element, and the two ends of the spring are ground flat so as to ensure the uniformity of the stress.

It should be noted that, in order to facilitate the layout of the whole hydrogen storage system pipeline, the central axes of the four inlets (the filter inlet A7 and the filter inlet B8) of the five-way filtration are coplanar, and are uniformly distributed at intervals of 90 degrees in the plane, and the central axis of the outlet is perpendicular to the plane in which the central axes of the inlets are located.

It should be noted that, in order to increase the rigidity of the whole hydrogen storage pipeline, the application is provided with 4M 5mm threaded holes (refer to fig. 5) through the filter, and the threaded holes can be fixed on the frame of the hydrogen storage system.

The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the concept of the present invention, and are intended to be within the scope of the present invention.

Claims

1. A multi-pass filter for a high pressure hydrogen supply system on board a motor vehicle, characterized in that it comprises a filter housing, a filter joint, a filter cartridge; the filter shell is engaged with the filter joint through threads to form a multi-pass cavity for wrapping the filter element;

A spring is arranged in the multi-pass filter, one end of the spring is propped against the plane of the filter element, and the other end of the spring is propped against the plane of the inner cavity of the filter joint;

The filter housing has an internal conical feature.

2. A multi-pass filter for a high pressure hydrogen supply system on board a motor vehicle as claimed in claim 1 wherein the ends of the spring are ground flat.

3. A multi-pass filter for a high pressure hydrogen supply system on a motor vehicle as claimed in claim 1 wherein the filter element is of metal.

4. A multiple pass filter for a high pressure hydrogen supply system on board a motor vehicle as claimed in claim 1 wherein the filter element is "U" shaped in cross section.

5. A multi-pass filter for a high pressure hydrogen supply system on a motor vehicle as claimed in claim 1 wherein the filter joint has an externally tapered feature.

6. A multiple pass filter for a high pressure hydrogen supply system on a motor vehicle as claimed in claim 1 wherein the filter housing has two openings, filter inlet a and filter inlet B, in addition to the filter fitting location.

7. A multi-pass filter for a high pressure hydrogen supply system on a motor vehicle as claimed in claim 6 wherein the central axes of the filter inlet a and the filter inlet B of the multi-pass filter are collinear and the central axis of the inlet is perpendicular to the central axis of the filter outlet.

8. A multiple pass filter for a high pressure hydrogen supply system on board a motor vehicle as claimed in claim 1 wherein threaded holes are formed in the filter housing.