CN216450689U

CN216450689U - Swirl enhancement type hydrogen ejector

Info

Publication number: CN216450689U
Application number: CN202122751816.6U
Authority: CN
Inventors: 李新海; 商显上; 卢炳印; 刘新莉; 臧会泰
Original assignee: Shandong Jianzhu University
Current assignee: Shandong Jianzhu University
Priority date: 2021-11-11
Filing date: 2021-11-11
Publication date: 2022-05-06
Anticipated expiration: 2031-11-11

Abstract

The utility model provides a whirl enhancement mode hydrogen ejector, relates to the ejector field, including an ejector main part, sliding fit has the needle valve of admitting air in the ejector main part, ejector main part outer wall annular array has a plurality of branch ways of admitting air, the branch way of admitting air is linked together with ejector main part inner chamber, be equipped with a plurality of air outlet needle holes on the needle valve of admitting air. The utility model can greatly improve the ejection effect of the ejector, effectively avoids the phenomenon of insufficient ejection volume of the ejector, and can improve the efficiency and the economical efficiency of the whole system by controlling the high-pressure gas flow of the ejector.

Description

Swirl enhancement type hydrogen ejector

Technical Field

The utility model relates to the field of ejectors, in particular to a swirl enhanced hydrogen ejector.

Background

Proton exchange membrane fuel cells are a new clean energy technology, and are actually energy conversion devices that convert chemical energy into electrical energy. The energy-saving control system has the advantages of low operation temperature, high energy conversion rate, high power density, quick start, strong environmental adaptability and the like, and can be widely applied to the fields of aviation, spaceflight, navigation, rail transit, electronic equipment, standby power supplies and the like, particularly the field of new energy automobiles. The fuel of the proton exchange membrane fuel cell is hydrogen, and in order to improve the utilization rate of the hydrogen, the hydrogen at the rear of the electric pile needs to be introduced to the front end of the electric pile.

At present, a common ejector utilizes high-pressure hydrogen at the front end of an electric propulsion device to convert the high-pressure hydrogen into high-speed hydrogen, the Bernoulli's law shows that low pressure can be generated near high-speed flowing fluid so as to generate adsorption, and then the low-speed low-pressure hydrogen at the rear end of a galvanic pile is introduced into an inlet of the galvanic pile to be mixed. However, if the injection amount of the injector is insufficient, the injection effect of the injector is greatly influenced, and the overall working efficiency of the fuel cell is further influenced.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems in the prior art, the utility model provides a swirl enhanced hydrogen ejector which can avoid the problems.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

the utility model provides a whirl enhancement mode hydrogen ejector, includes an ejector main part, sliding fit has the needle valve of admitting air in the ejector main part, ejector main part outer wall annular array has a plurality of branch ways of admitting air, the branch way of admitting air is linked together with ejector main part inner chamber, be equipped with a plurality of air outlet needle holes on the needle valve of admitting air.

Further, the ejector main part includes vertical pipe, vertical socle portion is connected with the horizontal plate, the horizontal plate mid-mounting has the toper pipe, the toper union coupling has mixed output tube, it is connected with mixed output wide pipe to mix output tube.

Furthermore, the vertical pipe, the conical pipe, the mixing output pipe and the mixing output wide pipe are communicated.

Furthermore, a plurality of mounting through holes are formed in the inner wall of the vertical pipe, and air inlet branch passages are fixedly mounted in the mounting through holes.

Further, the air inlet branch passage is provided with a flow control valve.

Furthermore, the air inlet direction of the air inlet branch channel is tangent to the inner wall of the vertical pipe.

Furthermore, the air inlet needle valve comprises a needle valve air inlet pipe, a needle valve conical head is arranged at the bottom of the needle valve air inlet pipe, and a plurality of air outlet needle holes are formed in the needle valve conical head.

Furthermore, a low-pressure gas inlet channel is formed between the needle valve gas inlet pipe and the needle valve conical head.

Furthermore, a high-pressure gas inlet channel is formed among the vertical pipe, the horizontal plate and the gas inlet needle valve.

Furthermore, a high-pressure gas inlet narrow passage is formed between the conical pipe and the gas inlet needle valve.

Furthermore, a mixing chamber is formed at the joint of the conical pipe and the mixing output pipe.

Furthermore, a power mechanism is arranged above the ejector main body and drives the air inlet needle valve to slide up and down in the ejector main body.

Further, power unit includes the overhead pipe, overhead pipe fixed connection is in the ejector main part, the overhead intraductal fixed block that installs, the fixed block top is equipped with the electro-magnet, the fixed block has armature through spring coupling, armature is connected with the needle valve that admits air.

Furthermore, the armature can slide up and down along the inner wall of the upper pipe.

The utility model has the beneficial effects that: the utility model can greatly improve the injection effect of the injector, effectively avoid the phenomenon of insufficient injection amount of the injector, and improve the efficiency and the economical efficiency of the whole system by controlling the high-pressure gas flow of the injector.

Drawings

FIG. 1 is a cross-sectional view of the present invention;

FIG. 2 is a top view of the eductor body;

FIG. 3 is a schematic structural view of the power mechanism;

in the figure: 1 an ejector main body, 11 vertical pipes, 12 horizontal plates, 13 conical pipes, 14 mixed output pipes, 15 mixed output wide pipes, 16 air inlet branch pipes,

2 air inlet needle valve, 21 needle valve air inlet pipe, 22 needle valve conical head, 23 air outlet needle hole,

31 upper pipe, 32 fixed block, 33 spring, 34 electromagnet, 35 armature,

4 low-pressure gas inlet channels, 5 high-pressure gas inlet channels, 6 high-pressure gas inlet narrow channels and 7 mixing chambers.

Detailed Description

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

Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 3, a whirl enhancement mode hydrogen ejector, includes an ejector main part, sliding fit has air inlet needle valve 2 in the ejector main part, ejector main part outer wall annular array has a plurality of inlet branch ways 16, inlet branch way is linked together with ejector main part inner chamber, be equipped with a plurality of air outlet needle holes 23 on the air inlet needle valve 2.

In at least one embodiment, the ejector body comprises a vertical pipe 11, a horizontal plate 12 is connected to the bottom of the vertical pipe, a conical pipe 13 is installed in the middle of the horizontal plate, a mixing output pipe 14 is connected to the conical pipe, and a mixing output wide pipe 15 is connected to the mixing output pipe.

The scheme is refined, and the vertical pipe, the conical pipe, the mixed output pipe and the mixed output wide pipe are communicated.

In at least one embodiment, a plurality of installation through holes are formed in the inner wall of the vertical pipe, and an air inlet branch passage is fixedly installed in each installation through hole. In some embodiments, the intake branch is fitted with a flow control valve.

In at least one embodiment, the air inlet needle valve comprises a needle valve air inlet pipe 21, a needle valve conical head 22 is arranged at the bottom of the needle valve air inlet pipe, and a plurality of air outlet needle holes are formed in the needle valve conical head.

Furthermore, a low-pressure gas inlet channel 4 is formed between the needle valve air inlet pipe 21 and the needle valve conical head 22. This low pressure gas inlet channel 4 is low pressure hydrogen entry, and low pressure hydrogen can follow the low pressure gas inlet channel and follow in the gas outlet pin hole gets into the ejector main part for low pressure hydrogen produces a circumferential speed.

In at least one embodiment, a high-pressure gas inlet passage 5 is formed among the vertical pipe, the horizontal plate and the gas inlet needle valve.

In at least one embodiment, a high-pressure gas inlet narrow passage 6 is formed between the conical pipe and the gas inlet needle valve.

In at least one embodiment, the junction of the conical tube and the mixing output tube forms a mixing chamber 7.

In at least one embodiment, a power mechanism is arranged above the ejector body and drives the air inlet needle valve to slide up and down in the ejector body.

Further, the power mechanism comprises an upper pipe 31 which is fixedly connected to the ejector main body, a fixed block 32 is installed in the upper pipe, an electromagnet 34 is arranged above the fixed block, the fixed block is connected with an armature 35 through a spring, and the armature is connected with the air inlet needle valve 2. The air inlet needle valve moves up and down in the ejector main body under the action of the electromagnet and the spring.

The scheme is refined, and the armature can slide up and down along the inner wall of the upper pipe.

In the working mode, in the working process of the ejector, high-pressure hydrogen enters the vertical pipe from the air inlet branch passage, so that the high-pressure hydrogen generates a spiral phenomenon in the vertical pipe, the high-pressure hydrogen generates a circumferential speed, and the high-pressure hydrogen has an axial speed in the downward flowing process, and the gas can form a combined speed with a higher speed under the simultaneous action of the circumferential speed and the axial speed; on the other hand, in the process that the high-pressure hydrogen flows into the high-pressure gas inlet narrow channel 6 from the high-pressure gas inlet channel 5, the flow cross section area is reduced, the speed of the hydrogen is further increased, and the Bernoulli's law can deduce that the pressure is reduced along with twice increasing of the flow speed of the high-pressure hydrogen, and the pressure difference between the high-pressure hydrogen and the hydrogen in the needle valve is further increased, so that the hydrogen in the needle valve can be better guided.

When the ejector is added with the power mechanism, the air inlet needle valve can move up and down in the ejector main body under the action of the power mechanism, and the up and down movement of the air inlet needle valve can play a role in adjusting the width of the high-pressure air inlet narrow passage 6 according to the actual requirement of the external working condition of the proton exchange membrane fuel cell, so that the flow rate and the flow rate of high-pressure hydrogen are adjusted.

In addition to the technical features described in the specification, the technology is known to those skilled in the art.

Claims

1. The utility model provides a whirl enhancement mode hydrogen ejector which characterized in that, includes an ejector main part, sliding fit has the needle valve of admitting air in the ejector main part, ejector main part outer wall annular array has a plurality of branch ways of admitting air, the branch way of admitting air is linked together with ejector main part inner chamber, be equipped with a plurality of air outlet needle holes on the needle valve of admitting air.

2. The enhanced-swirl hydrogen ejector according to claim 1, wherein the ejector body comprises a vertical pipe, a horizontal plate is connected to the bottom of the vertical pipe, a conical pipe is installed in the middle of the horizontal plate, the conical pipe is connected with a mixing output pipe, and the mixing output pipe is connected with a mixing output wide pipe.

3. The swirl-enhanced hydrogen eductor of claim 2 wherein the vertical tube has a plurality of mounting holes formed in an inner wall thereof, and wherein the mounting holes have air inlet branches fixedly mounted therein.

4. The swirl-enhanced hydrogen eductor of any one of claims 1 to 3 wherein the inlet branch is fitted with a flow control valve.

5. The enhanced-swirl hydrogen eductor of claim 2 or 3 wherein the inlet branch is tangential to the inner wall of the vertical pipe.

6. The spiral-flow enhanced hydrogen injector according to claim 1, wherein the air inlet needle valve comprises a needle valve air inlet pipe, a needle valve conical head is arranged at the bottom of the needle valve air inlet pipe, and a plurality of air outlet needle holes are formed in the needle valve conical head.

7. The enhanced-swirl hydrogen ejector according to claim 1, wherein a power mechanism is arranged above the ejector body and drives the air inlet needle valve to slide up and down in the ejector body.

8. The spiral-flow enhanced hydrogen ejector according to claim 7, wherein the power mechanism comprises an upper pipe, the upper pipe is fixedly connected to the ejector main body, a fixed block is installed in the upper pipe, an electromagnet is arranged above the fixed block, the fixed block is connected with an armature through a spring, and the armature is connected with an air inlet needle valve.

9. The enhanced swirl hydrogen eductor of claim 8 wherein the armature slides up and down the inner wall of the upper tube.