CN113280251B

CN113280251B - Shunting bleeder hydrogen cylinder structure for vehicle

Info

Publication number: CN113280251B
Application number: CN202110463522.5A
Authority: CN
Inventors: 李晨; 解璨铭; 王保龙; 杜胜凯; 张鑫; 宁翠翠
Original assignee: Zhongtong Bus Holding Co Ltd
Current assignee: Zhongtong Bus Holding Co Ltd
Priority date: 2021-04-25
Filing date: 2021-04-25
Publication date: 2022-05-10
Anticipated expiration: 2041-04-25
Also published as: CN113280251A

Abstract

The invention discloses a distributable discharge type hydrogen cylinder for a vehicle, which belongs to the technical field of gas cylinders, adopts a channel outlet arranged on the side wall of a convex part of the hydrogen cylinder to reduce the arrangement space of the hydrogen cylinder, adopts a flow distribution device arranged at the tail of the hydrogen cylinder for discharging hydrogen under different conditions, and comprises: the hydrogen gas generating device comprises a bottle body, a plurality of hydrogen gas generating devices and a plurality of control valves, wherein channels are arranged at two ends of the bottle body, the channels at the two ends of the bottle body are different in shape and are provided with a plurality of outlets communicated with the outside, and the channel at the tail end of the hydrogen gas generating device is provided with a bifurcation; the diverging device is arranged at the bifurcation port of the channel at the tail end of the bottle body, the radius of the diverging device is larger than the radius of the section of the channel at the tail end of the bottle body, the diverging device is hollow and is provided with a plurality of openings, a temperature control switch is arranged in the diverging device, and the temperature control switch can selectively block the outlet at the tail end of the bottle body, so that the air flow in the bottle body is discharged from the set outlet.

Description

Shunting bleeder hydrogen cylinder structure for vehicle

Technical Field

The invention belongs to the technical field of gas cylinders, and particularly relates to a distributable discharge type hydrogen cylinder structure for a vehicle.

Background

Although hydrogen is a flammable and explosive gas, hydrogen also serves as an important component of a fuel cell, and therefore the storage technology of hydrogen is directly related to the problems of endurance, cost, safety and the like of a hydrogen fuel cell vehicle. Hydrogen is usually stored in a special hydrogen cylinder, and because the internal pressure of the hydrogen is high, if the temperature and the air pressure in the hydrogen cylinder are too high and cannot be released in time due to factors such as environment and the like, an explosion is often caused to cause safety accidents.

The inventor believes that at present, hydrogen cylinders are generally connected with a single integration valve at the front end, which increases the arrangement space of the hydrogen cylinders on a vehicle, and if the vehicle bumps, the integration valve collides with the side wall of the vehicle body; meanwhile, the tail of the hydrogen cylinder is provided with the hot-melting bolt, so that when the temperature of hydrogen in the cylinder is too high, the hot-melting bolt is fused to release the hydrogen from the tail of the cylinder, and the mode needs to be replaced after the hot-melting bolt is fused once, thereby greatly influencing the use efficiency of the hydrogen cylinder.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a distributable bleeder type hydrogen cylinder for vehicles, which realizes stable storage or hydrogen relief; the invention adopts the channel outlet arranged on the side wall of the convex part of the hydrogen cylinder to reduce the arrangement space of the hydrogen cylinder, and adopts the hydrogen cylinder tail provided with the flow dividing device for discharging hydrogen under different conditions, thereby solving the technical problems in the background technology.

In order to achieve the purpose, the invention is realized by the following technical scheme:

the technical scheme of the invention provides a distributable bleeder type hydrogen cylinder for a vehicle, which comprises: the hydrogen gas generating device comprises a bottle body, a plurality of hydrogen gas generating devices and a plurality of control valves, wherein channels are arranged at two ends of the bottle body, the channels at the two ends of the bottle body are different in shape and are provided with a plurality of outlets communicated with the outside, and the channel at the tail end of the hydrogen gas generating device is provided with a bifurcation;

the diverging device is arranged at the bifurcation port of the channel at the tail end of the bottle body, the radius of the diverging device is larger than the radius of the section of the channel at the tail end of the bottle body, the diverging device is hollow and is provided with a plurality of openings, a temperature control switch is arranged in the diverging device, and the temperature control switch can selectively block the outlet at the tail end of the bottle body, so that the air flow in the bottle body is discharged from the set outlet.

The working principle of the invention is as follows:

channels are arranged in the front end and the tail end convex parts; the hydrogen cylinder tail channel is internally provided with a flow dividing device, when the hydrogen needs to be manually discharged, the hydrogen is discharged from the tail section through the connecting device through the flow dividing device, and when the temperature of the hydrogen cylinder is overhigh, the hydrogen is discharged from the other connecting device at the tail end through the flow dividing device.

The technical scheme of the invention has the following beneficial effects:

1) according to the invention, the channels are arranged in the front end and the tail end bulge parts, and the channel outlets are arranged on the side walls of the bulge parts, so that the redundant arrangement space occupied by the connection with the valve body is avoided; the hydrogen cylinder tail channel is internally provided with a flow distribution device, when hydrogen needs to be manually discharged, the hydrogen is discharged from the manual discharge device through the lower flow distribution cover, and when the temperature of the hydrogen cylinder is overhigh, the hydrogen is discharged from the automatic discharge device through the upper flow distribution cover. The whole hydrogen cylinder structure can realize repeated storage and discharge of hydrogen, frequent replacement of internal components after hydrogen discharge is avoided, and the hydrogen cylinder structure has the characteristics of stability and high efficiency.

2) In the invention, the paraffin, the spring, the wax tube and the push rod are used as switches, the positions of the push rod and the spring are changed by utilizing the action of the high-temperature property of hydrogen on the paraffin, so that the matching between the first shunting cover or the second shunting cover and the spherical shell is changed, the change of the flow direction of the hydrogen in the channel is realized, the automation of the whole structure is accurately realized, the hot-melting bolt does not need to be installed at the tail of the hydrogen cylinder, and the shunting device installed by a judge can be used for multiple times, thereby greatly improving the use efficiency of the hydrogen cylinder.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.

FIG. 1 is an overall cross-sectional view of the present invention according to one or more embodiments;

FIG. 2 is an enlarged view at A in FIG. 1;

FIG. 3 is a schematic diagram of internal switches of a shunt device according to one or more embodiments of the present invention;

FIG. 4 is a diagram of a first operating state of a flow diversion device according to one or more embodiments of the present invention;

fig. 5 is a diagram of a second operating state of a flow diversion device in accordance with one or more embodiments of the present invention.

In the figure: 1. the automatic release device comprises an automatic release device, 2, a flow dividing device, 3, a channel, 31, a first channel, 32, a second channel, 4, a bottle body, 5, a sealing sleeve, 6, a hydrogen concentration detector, 7, a hydrogen cylinder connecting device, 8, a manual release device, 201, a cantilever, 202, a rubber tube, 203, a push rod, 204, a first flow dividing cover, 205, a flow dividing connecting rod, 206, paraffin, 207, a second flow dividing cover, 208, a spring, 209 and a wax tube.

The spacing or dimensions between each other are exaggerated to show the location of the various parts, and the illustration is for illustrative purposes only.

Detailed Description

It should be noted that the following embodiments can be arbitrarily combined.

In a typical embodiment of the present invention, the present embodiment discloses a distributable relief type hydrogen cylinder for a vehicle, which includes:

a bottle body 4 with a bulge protruding out of the end surface of the bottle body 4, wherein both ends of the bottle body 4 are provided with channels 3, the outlet of the channel 3 is arranged at the bulge of the bottle body 4, the channels 3 at both ends of the bottle body 4 are different in shape, and the channel 3 at the tail end of the hydrogen cylinder is provided with a bifurcation;

the diverging device 2 is arranged at the bifurcation port of the channel 3 at the tail end of the bottle body 4, the radius of the diverging device 2 is larger than the radius of the section of the channel 3 at the tail end of the bottle body 4, and the diverging device 2 is communicated with the channel 3. The flow divider 2 is hollow and has a plurality of openings, and a switch capable of communicating with the channel 3 through the openings is arranged in the flow divider 2 to control the direction of the airflow in the channel 3.

More specifically, the hydrogen cylinder in this embodiment further includes a sealing sleeve 5 that fits on the surface of the channel 3.

The channels 3 at both ends of the bottle body 4 are provided with sealing sleeves 5.

More specifically, referring to fig. 1 to 5, the shape of the bottle body 4 in this embodiment is the same as that of the bottle body 4 of the conventional hydrogen cylinder, and the bottle body 4 is cylindrical, and the front end and the tail end of the bottle body 4 are provided with protruding portions protruding from the end surface of the bottle body 4, and the protruding portions are used for providing a part of structures or devices for controlling hydrogen gas flow, so as to increase the integration level of the hydrogen cylinder and facilitate gas access by the hydrogen cylinder. The two convex parts are internally provided with a channel 3, and the cross section of the channel 3 is circular.

Wherein, the channel 3 at the front end is in a T shape, one outlet is communicated with the inside of the bottle body 4, and the other two outlets are arranged on the side wall of the convex part of the bottle body 4; the channel 3 at the bottle tail is shaped like a Pi, two outlets are communicated with the inside of the bottle body 4, the other two outlets are arranged on the side wall of the convex part of the bottle body 4, and the outlet of the channel 3 at the bottle tail is communicated with the inside of the bottle body 4 so as to avoid the phenomenon that the flow divider 2 cannot normally divide when the hydrogen is discharged because the pressure in the bottle is too high.

Therefore, one port of the channel 3 communicates with the accommodating cavity inside the bottle body 4, and the number of inlets of the channel 3 at the rear end of the bottle body 4 is greater than that of inlets of the channel 3 at the front end of the bottle body 4.

In another embodiment, the number of the outlets of the front end passage 3 communicating with the inside of the bottle 4 may be plural, while the number of the outlets of the rear end passage 3 communicating with the inside of the bottle 4 is always larger than that of the front end passage 3.

For convenience of description, the right side in fig. 1 is defined as front, and the left side is defined as back in this embodiment, so that the front end and the back end of the bottle 4 are clearly defined, and for further convenience of description, the channel 3 disposed at the front end of the bottle 4 is named as a first channel 31, and the channel 3 disposed at the back end of the bottle 4 is named as a second channel 32, and as can be seen from the above description of the channel 3, each of the first channel 31 and the second channel 32 at least includes two intersecting sub-channels 3.

In this embodiment, the inner walls of the first channel 31 and the second channel 32 are both provided with a hydrogen concentration detector 6 for detecting the hydrogen concentration in the channel 3 in real time; the surface of the channel 3 is tightly attached with a sealing sleeve 5 for ensuring the tightness of hydrogen storage.

More specifically, the first channel 31 includes a first sub-channel 3 and a second sub-channel 3 which are perpendicular to each other, and the second channel 32 includes a third sub-channel 3, a fourth sub-channel 3 and a fifth sub-channel 3, wherein the third sub-channel 3 and the fourth sub-channel 3 are both perpendicular to the fifth sub-channel 3.

In yet another embodiment, the first sub-channel 3 and the second sub-channel 3 are not necessarily perpendicular to each other, and may have a certain inclination.

In yet another embodiment, the third sub-channel 3 and the fifth sub-channel 3, and the fourth sub-channel 3 and the fifth sub-channel 3 are not necessarily perpendicular to each other, and may have a certain inclination.

It is understood that the channel 3 in this embodiment may be implemented by casting or drilling.

A cantilever 201 is arranged in the flow dividing device 2, the cantilever 201 is connected with a wax pipe 209, the wax pipe 209 is hollow, and the rubber pipe 202 is attached to the hollow inner cavity of the wax pipe 209; the push rod 203 is arranged at the hollow part of the wax tube 209, one end of the push rod 203 is connected with the first shunting cover 204, one end of the push rod 203 is rigidly connected with the first shunting cover 204, and the other end can extend into the wax tube 209 along the hollow channel 3; two ends of the shunt connecting rod 205 are respectively connected with the first shunt cover 204 and the second shunt cover 207; a spring 208 is arranged between the bottom end surface of the wax pipe 209 and the second diversion cover 207.

Specifically, referring to fig. 2 to 5, a spherical shell having a plurality of holes is disposed outside the flow divider 2, and the holes include a first opening for communicating the third sub-channel 3 and the fourth sub-channel 3, and a second opening and a third opening for communicating the fifth sub-channel 3, and central axes of the second opening and the third opening coincide with each other.

In this embodiment, the second opening and the third opening are both circular.

The flow divider 2 includes a cantilever 201, a rubber tube 202, a push rod 203, a first flow dividing cover 204, a flow dividing link 205, paraffin 206, a second flow dividing cover 207, a spring 208, and a wax tube 209. One end of the cantilever 201 is rigidly connected with the inner wall of the shunting device 2, and the other end of the cantilever is rigidly connected with the outer wall of the wax pipe 209, so that the wax pipe 209 is ensured to be fixed at the central position of the shunting device 2; the hollow channel 3 is arranged at the center of the inner part of the wax pipe 209, and the rubber pipe 202 is attached to the inner wall of the hollow channel 3. The inside of the wax pipe 209 is filled with solid paraffin 206; one end of the spring 208 is connected with the central position of the outer bottom of the wax pipe 209, and the other end is contacted with the inner surface of the second diversion cover 207; the largest circular section radii of the first flow dividing cover 204 and the second flow dividing cover 207 are both smaller than the section radius of the channel 3, so that the first flow dividing cover 204 and the second flow dividing cover 207 do not contact with the channel 3 in the movement process, and when the upper second flow dividing cover 207 is joined with the spherical shell, the outer wall of the flow dividing cover is fitted with the outer wall of the flow dividing device 2 to form a complete spherical surface, as shown in fig. 4 and 5.

It can be understood that the cantilever 201, the rubber tube 202, the push rod 203, the first shunt cover 204, the shunt link 205, the paraffin 206, the second shunt cover 207, the spring 208 and the wax tube 209 actually form a temperature controlled switch, in the temperature controlled switch, when the temperature in the hydrogen cylinder exceeds a safe value, the paraffin 206 in the wax tube 209 is heated to melt and gradually becomes liquid, the volume thereof increases, the rubber tube 202 is forced to contract inwards, an upward pushing force is generated on the bottom surface of the push rod 203, the push rod 203 moves upwards along the hollow channel 3 of the wax tube 209, so that the first shunt cover 204 is separated from the spherical shell, the second shunt cover 207 moves upwards against the elastic force of the spring 208 to gradually engage with the shunt device 2, and at the same time, the flow direction of hydrogen in the channel 3 changes, and the hydrogen is slowly discharged out of the cylinder from the automatic discharge device 1.

The flow divider 2 in this embodiment further has a push rod 203, one end of which is rigidly connected to the first flow dividing cover 204, and the other end of which extends into the hollow channel 3 of the wax pipe 209 and can move up and down along the hollow channel 3 after the paraffin 206 is melted; the first shunting cover 204 and the second shunting cover 207 are rigidly connected through shunting links 205, in order to ensure the structural stability, the embodiment uses two shunting links 205 for connection, in order to enable the first shunting cover 204 and the second shunting cover 207 to be fitted to the spherical shell of the shunting device 2, the length of the shunting link 205 is greater than the diameter of the spherical shell;

the shell is arranged to be spherical in the embodiment, the radius of the shell is larger than that of the cross section of the channel 3, so that hydrogen can flow through the flow dividing device 2, and the flow dividing device 2 is communicated with the channel 3 close to one side inside the bottle body 4 to ensure that the hydrogen can flow to other outlets through the flow dividing device 2.

In yet another embodiment, the shape of the shell is not necessarily spherical, but may be a regular polyhedron or other spatial geometry with curved surface.

In addition, the tail of the hydrogen cylinder is provided with an automatic relief device 1 near the outlet of the channel 3 of the first diversion cover 204, and the tail of the hydrogen cylinder is provided with a manual relief device 8 near the outlet of the channel 3 of the second diversion cover 207; the outlets of the channels 3 at the two sides of the front end of the hydrogen cylinder are provided with connecting devices 7 connected with other hydrogen cylinders.

The automatic relief device 1 and the manual relief device 8 are respectively an electromagnetic valve and a manual valve.

Referring to fig. 2-5, a hydrogen cylinder connecting device 7 is disposed at the outlet of the side wall of the channel 3 at the front end of the bottle 4 for connecting with other hydrogen cylinders; an automatic discharge device 1 is arranged at an outlet on one side of the side wall of the bottle tail channel 3 of the bottle body 4 close to the first shunting cover 204, and when hydrogen in the bottle flows out from the first shunting cover 204, the hydrogen can be slowly released outwards; the side wall of the bottle tail channel 3 of the bottle body 4 is provided with a manual discharging device 8 near the outlet of one side of the second split cover 207, when hydrogen in the bottle flows out from the second split cover 207, the manual discharging device 8 is opened, and the hydrogen can be slowly released outwards.

When the hydrogen storage and supply system works, the required number of the bottle bodies 4 are connected through the front-end hydrogen bottle connecting device 7 to form a required hydrogen storage and supply system, and the hydrogen concentration detector 6 monitors the hydrogen concentration in the channel 3 in real time; under the normal temperature state, the paraffin 206 is in a solid state, the spring 208 stretches, and the elastic force acts on the second shunt cover 207, so that the second shunt cover 207 is separated from the shunt device 2, the first shunt cover 204 is connected with the shunt device 2, the movement track of the hydrogen at the tail of the bottle body 4 in the channel 3 is that the hydrogen passes through the shunt device 2 from the inside of the bottle body 4 to the inside of the bottle body 4 through the second shunt cover 207 to form a closed loop, if the hydrogen needs to be discharged manually, the manual discharge device 8 is opened, and the hydrogen is slowly discharged out of the bottle from one end of the manual discharge device 8; when the temperature in the hydrogen cylinder exceeds the safety value, the paraffin 206 in the wax tube 209 is heated and melted to gradually become liquid, the volume is increased, the rubber tube 202 is forced to shrink inwards, upward thrust is generated on the bottom surface of the push rod 203, the push rod 203 moves upwards along the hollow channel 3 of the wax tube 209, the first shunting cover 204 is separated from the shunting device 2, the second shunting cover 207 overcomes the elastic force of the spring 208 to move upwards to gradually engage with the shunting device 2, at the moment, the flow direction of hydrogen in the channel 3 is changed, and the hydrogen is slowly discharged out of the cylinder from the automatic discharging device 1.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A distributable bleeder type hydrogen cylinder for vehicles, comprising:

the hydrogen gas generating device comprises a bottle body, a plurality of hydrogen gas generating devices and a plurality of control valves, wherein channels are arranged at two ends of the bottle body, the channels at the two ends of the bottle body are different in shape and are provided with a plurality of outlets communicated with the outside, and the channel at the tail end of the hydrogen gas generating device is provided with a bifurcation;

the flow dividing device is arranged at the bifurcation port of the channel at the tail end of the bottle body, the radius of the flow dividing device is larger than the radius of the section of the channel at the tail end of the bottle body, the flow dividing device is hollow and is provided with a plurality of openings, a temperature control switch is arranged in the flow dividing device, and the temperature control switch can selectively block the outlet at the tail end of the bottle body so as to discharge airflow in the bottle body from a set outlet;

the temperature control switch comprises a wax pipe, a flexible pipe fitting, a push rod, a spring, a first shunt cover and a second shunt cover, the wax pipe is hollow, and paraffin is filled in the wax pipe; one part of the push rod is inserted into the flexible pipe fitting, the flexible pipe fitting is arranged at the hollow part of the paraffin pipe, and the paraffin can fix the flexible pipe fitting and the push rod; one end of the push rod is connected with the first shunting cover; a shunt connecting rod is also arranged outside the wax pipe, and two ends of the shunt connecting rod are respectively connected with the first shunt cover and the second shunt cover; a spring is arranged between the end surface of the bottom of the wax pipe and the second shunt cover.

2. The vehicular shuntable discharge hydrogen cylinder of claim 1, further comprising a sealing sleeve that conforms to the channel surface.

3. The vehicular shuntable discharge hydrogen cylinder as claimed in claim 1, wherein the two ends of the cylinder are respectively a front end and a rear end, the passageway disposed at the front end of the cylinder is a first passageway, the passageway disposed at the rear end of the cylinder is a second passageway, and both the first passageway and the second passageway comprise at least two intersecting sub-passageways.

4. The distributable bleeder hydrogen cylinder for vehicles as claimed in any of claims 1 to 3, wherein the inlet of said channel communicates with the interior of the cylinder, and the number of inlets of the channel at the rear end of the cylinder is greater than the number of inlets of the channel at the front end of the cylinder.

5. The splittable bleed hydrogen cylinder of claim 3, wherein the first passage comprises a first and a second vertical sub-passage, and the second passage comprises a third, a fourth, and a fifth sub-passage, wherein the third and fourth sub-passages are each vertically connected to the fifth sub-passage.

6. The shuntable discharge hydrogen cylinder as claimed in claim 1, wherein the shunt device includes a spherical housing, the temperature control switch being slidably disposed in the spherical housing; the spherical shell is provided with a plurality of holes which can be matched with the temperature control switch.

7. The vehicular shuntable relief hydrogen cylinder of claim 1, wherein the first shunt cap and the second shunt cap have a maximum circular cross-sectional radius that is less than the channel cross-sectional radius; when the first shunting cover and the second shunting cover are connected with the shunting device, the outer walls are attached to form a complete spherical surface.

8. The vehicular shuntable discharge hydrogen cylinder as claimed in claim 1, wherein the body has a protrusion protruding from an end surface of the body, and the outlet of the passage is provided at the protrusion of the body.

9. The vehicular shuntable relief hydrogen cylinder of claim 1, wherein the passageway at the trailing end of the hydrogen cylinder has two outlets, the two outlets being connected to the solenoid valve and the manual valve, respectively.