CN114060719A

CN114060719A - A hydrogen leak detection device for a hydrogen energy bus

Info

Publication number: CN114060719A
Application number: CN202111346482.2A
Authority: CN
Inventors: 龚冬梅; 许锋; 石文超
Original assignee: West Anhui University
Current assignee: West Anhui University
Priority date: 2021-11-15
Filing date: 2021-11-15
Publication date: 2022-02-18

Abstract

The invention discloses a hydrogen leakage detection device for a hydrogen energy bus, which comprises a vehicle body and a hydrogen storage bottle arranged under the chassis of the vehicle body. A branch pipe is fixedly connected through a flange, the connection between the output pipe and the branch pipe is sleeved with a cover, and the cover includes a front cover and a rear cover, and a hydraulic amplification mechanism is arranged on the side wall of the rear cover , and the hydraulic amplification mechanism includes an adjustment component, a main hydraulic component, a secondary hydraulic component and a conduction component. The movable end of the secondary hydraulic component is fixedly connected with an indicator rod, and the indicator rod is sealed and movably penetrates the side wall of the rear casing. The present invention is in the technical field of new energy vehicles, and the detection device can quickly and accurately detect whether there is air leakage at the connection between the output pipe and the branch pipe of the hydrogen storage bottle.

Description

Hydrogen energy bus hydrogen leakage detection device

Technical Field

The invention relates to the technical field of new energy automobiles, in particular to a hydrogen leakage detection device for a hydrogen energy bus.

Background

Since hydrogen has little influence on the environment, hydrogen energy has gradually entered the research and discussion range of researchers, and hydrogen plays an important role in the whole clean energy system.

Nowadays, in order to utilize renewable energy and clean energy more effectively, an energy system centered on hydrogen energy is indispensable. The hydrogen energy automobile has a wide application market as a clean energy vehicle.

The existing hydrogen energy bus is generally provided with a hydrogen storage bottle at the bottom, and hydrogen is conveyed through the hydrogen storage bottle and a conveying pipeline, but the potential safety hazard of leakage can exist at the joint of the hydrogen storage bottle and the pipeline, and in the prior art, a detection device is lacked to provide safety detection measures before use.

Therefore, a hydrogen leakage detection device for a hydrogen energy bus is provided to solve the problems.

Disclosure of Invention

The invention aims to solve the problems in the prior art, and provides a hydrogen leakage detection device for a hydrogen energy bus.

In order to achieve the purpose, the invention adopts the following technical scheme:

a hydrogen leakage detection device for a hydrogen energy bus comprises a vehicle body and a hydrogen storage bottle arranged below a chassis of the vehicle body, wherein an output pipe is arranged at an output port end of the hydrogen storage bottle, a branch pipe is fixedly connected to a port of the output pipe through a flange, a housing is sleeved at the joint of the output pipe and the branch pipe and comprises a front housing and a rear housing, a hydraulic amplification mechanism is arranged on the side wall of the rear housing and comprises an adjusting component, a main hydraulic component, a secondary hydraulic component and a conducting component, an indicating rod is fixedly connected to the movable end of the secondary hydraulic component, and the indicating rod penetrates through the side wall of the rear housing in a sealing and movable manner;

the adjusting component is arranged on the side wall of the front housing and used for starting the conducting component to work;

the main hydraulic component is arranged on the side wall of the rear housing and used for driving the movable end of the secondary hydraulic component to move;

the secondary hydraulic component is arranged on the side wall of the main hydraulic component, communicated with the interior of the main hydraulic component and used for amplifying the movable stroke of the main hydraulic component;

and the conducting assembly is arranged on one side of the secondary hydraulic assembly and communicated with the interior of the secondary hydraulic assembly, so that the internal pressure of the secondary hydraulic assembly is consistent with the internal pressure of the housing in an initial state.

Preferably, the adjustment subassembly is including rotating handle, fixed plate, latch, bull stick, cylinder piece and breach, the bull stick activity sets up on the lateral wall of preceding housing, the one end fixedly connected with rotation handle that the bull stick is located the housing outside, and the other end fixedly connected with cylinder piece of bull stick, the breach has been seted up on the lateral wall of cylinder piece, be provided with the fixed plate on the lateral wall of preceding housing, and the upper end lateral wall of fixed plate is equidistant to be provided with a plurality of latches, the rotation handle is inserted and is established between wherein two latches.

Preferably, the main hydraulic component comprises a main piston pipe, a main piston plate, a first return spring, a support plate and a T-shaped guide rod, the main piston pipe is arranged on the inner wall of the rear housing close to the upper side, the main piston pipe is connected with the main piston plate in a sliding mode, the support plate is arranged on the inner side wall, close to the port, of the main piston pipe, the T-shaped guide rod is movably inserted on the support plate, the first return spring is sleeved on the T-shaped guide rod, and liquid is filled in the main piston pipe.

Preferably, the secondary hydraulic assembly comprises a secondary piston tube, a secondary piston plate and a second return spring, the secondary piston tube is communicated with the main piston tube, and the diameter ratio of the secondary piston tube to the main piston tube is 1: 6.

preferably, the conduction assembly comprises a square plunger sleeve, a square plunger, a first vent hole, an installation lug, a T-shaped fixing rod and a third reset spring, the square plunger sleeve is sleeved outside the square plunger in a sealing mode, the installation lug is symmetrically arranged on two sides of the square plunger below the square plunger, the T-shaped fixing rod is fixedly arranged at the upper end of the installation lug, the third reset spring is sleeved on the outer side of the T-shaped fixing rod, the secondary piston tube is communicated with the square plunger sleeve through the conduction tube, the first vent hole is formed in the side wall of the square plunger in a penetrating mode, the second vent hole is formed in the square plunger sleeve in a penetrating mode on the other side, corresponding to the conduction tube, of the square plunger, the bottom of the square plunger abuts against the notch, and the second vent hole is located right above the first vent hole when the third reset spring is not contracted.

Preferably, the adjustment subassembly still includes fourth reset spring, circular slide and circular sleeve pipe, the fixed lateral wall at the bull stick of establishing of circular slide, and the outside cover of bull stick is equipped with fourth reset spring, the bull stick runs through the lateral wall of preceding cover shell, the inner wall fixed connection of circular sleeve pipe and preceding cover shell, the sealed slip of circular slide sets up in circular sleeve pipe.

Preferably, the outer side of the indication rod is provided with an indication scale.

Preferably, a square opening is formed in the vertical side wall of the front cover shell opposite to the rear cover shell, a rubber sheet is arranged in the square opening, a rubber strip is arranged on the side wall of the front cover shell opposite to the rear cover shell, and the rubber strip part is fixedly adhered to the rubber sheet.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, by arranging the main hydraulic component and the secondary hydraulic component, when the gas leakage occurs, through the hydraulic conduction effect, whether the connection part of the output pipe of the output port of the hydrogen storage bottle and the branch pipe leaks or not is quickly judged by judging whether the indication rod is moved out of the housing or not;

further, through setting up the diameter ratio of master piston pipe and time piston pipe, then can enlarge the stroke for it can be more obvious to reveal the volume of shifting out through the pilot lever and react out, then can the short-term test go out the gas leakage condition of this junction.

2. According to the invention, by arranging the adjusting assembly, the square plunger piston moves upwards after the handle is rotated by rotating the connecting components such as the handle, the fixing plate, the latch, the rotating rod, the cylindrical block and the notch, so that the pressure intensity of the secondary hydraulic assembly is consistent with that in the housing, and a pre-conduction effect before detection is achieved;

further, through setting up fourth reset spring, circular slide and circular sleeve pipe, after the handle is rotated in the pulling for under the initial condition, the inside space of housing increases, forms negative pressure environment, and then carries out quick suction to gas leakage, thereby inside pressure sharply rises, thereby can make hydraulic pressure mechanism of amplification detect work fast.

3. The invention can adapt to pipe diameters with various aperture sizes by arranging the rubber sheet at the square outlet, and can effectively seal the side wall of the outlet on the output pipe or the hydrogen storage bottle by additionally arranging the rubber strip, thereby preventing the air leakage of the housing.

Drawings

Fig. 1 is a schematic structural diagram of a vehicle body of a hydrogen leakage detection device for a hydrogen energy bus, which is provided by the invention;

FIG. 2 is a schematic structural view of a hydrogen storage bottle of the hydrogen leakage detection device for the hydrogen-powered bus according to the present invention;

fig. 3 is a schematic structural diagram of a housing of the hydrogen leakage detection device for the hydrogen-powered bus according to the present invention;

fig. 4 is a schematic partial sectional structural view of a housing of a hydrogen leakage detection device for a hydrogen-powered bus according to the present invention;

FIG. 5 is an enlarged view of the structure at A in FIG. 4;

FIG. 6 is a schematic structural diagram of the connection of relevant components of a hydraulic amplification mechanism of the hydrogen leakage detection device for the hydrogen-powered bus provided by the invention;

FIG. 7 is a schematic cross-sectional structural view of a hydraulic amplifying mechanism of a hydrogen leakage detection device for a hydrogen-powered bus according to the present invention;

fig. 8 is a schematic structural diagram of an indicating rod of the hydrogen leakage detection device for the hydrogen energy bus provided by the invention.

In the figure: 1. a vehicle body; 2. a hydrogen storage bottle; 3. a housing; 4. an adjustment assembly; 401. rotating the handle; 402. a fixing plate; 403. clamping teeth; 404. a rotating rod; 405. a fourth return spring; 406. a circular slide plate; 407. a circular sleeve; 408. a cylindrical block; 409. a notch; 5. a primary hydraulic component; 501. a master piston tube; 502. a master piston plate; 503. a first return spring; 504. a support plate; 505. a T-shaped guide rod; 6. a secondary hydraulic component; 601. a secondary piston tube; 602. a secondary piston plate; 603. a second return spring; 7. an indication lever; 701. indicating scales; 8. a conducting component; 801. a square plunger sleeve; 802. a square plunger; 803. a first vent hole; 804. mounting lugs; 805. a T-shaped fixing rod; 806. a third return spring; 9. a conduction pipe; 10. a square opening.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and 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.

Referring to fig. 1-8, a hydrogen leakage detection device for a hydrogen energy bus comprises a vehicle body 1 and a hydrogen storage bottle 2 arranged below a chassis of the vehicle body 1, wherein an output pipe 201 is arranged at an output port end of the hydrogen storage bottle 2, a branch pipe 202 is fixedly connected to a port of the output pipe 201 through a flange, a housing 3 is sleeved at a joint of the output pipe 201 and the branch pipe 202, the housing 3 comprises a front housing 301 and a rear housing 302, a hydraulic amplification mechanism is arranged on a side wall of the rear housing 302, the hydraulic amplification mechanism comprises an adjustment component 4, a main hydraulic component 5, a secondary hydraulic component 6 and a conduction component 8, an indication rod 7 is fixedly connected to a movable end of the secondary hydraulic component 6, and the indication rod 7 is sealed and movably penetrates through the side wall of the rear housing 2; the outside of indication rod 7 is provided with indication scale 701, through direct observation indication scale 701, then can learn the condition of hydrogen leakage volume more accurately.

The adjusting component 4 is arranged on the side wall of the front cover shell 301 and used for starting the conducting component 8 to work;

the primary hydraulic component 5 is arranged on the side wall of the rear housing 202 and used for driving the movable end of the secondary hydraulic component 6 to move;

the secondary hydraulic component 6 is arranged on the side wall of the primary hydraulic component 5, communicated with the interior of the primary hydraulic component and used for amplifying the movable stroke of the primary hydraulic component 5;

and the conducting assembly 8 is arranged on one side of the secondary hydraulic assembly 6 and communicated with the interior of the secondary hydraulic assembly, so that the internal pressure of the secondary hydraulic assembly is consistent with the internal pressure of the housing 3 in an initial state.

Referring to fig. 5 to 6, specifically, the adjusting assembly 4 includes a rotating handle 401, a fixing plate 402, latches 403, a rotating rod 404, a cylindrical block 408 and a gap 409, the rotating rod 404 is movably disposed on a side wall of the front housing 201, one end of the rotating rod 404 located outside the housing 3 is fixedly connected with the rotating handle 401, the other end of the rotating rod 404 is fixedly connected with the cylindrical block 408, the gap 409 is disposed on an outer side wall of the cylindrical block 408, the fixing plate 402 is disposed on the outer side wall of the front housing 201, a plurality of latches 403 are disposed on an upper end side wall of the fixing plate 402 at equal intervals, and the rotating handle 401 is inserted between two latches 403.

Referring to fig. 6-7, specifically, the conducting assembly 8 includes a square plunger sleeve 801, a square plunger 802, a first vent hole 803, a mounting lug 804, a T-shaped fixing rod 805 and a third return spring 806, the square plunger sleeve 801 is hermetically sealed at the outer side of the square plunger 802, the mounting lugs 804 are symmetrically disposed at two sides of the square plunger 802 located below, the T-shaped fixing rod 805 is fixedly disposed at the upper end of the mounting lug 804, the third return spring 806 is sleeved at the outer side of the T-shaped fixing rod 805, the secondary piston tube 601 is communicated with the square plunger sleeve 801 through the conducting tube 9, the first vent hole 803 is penetratingly disposed on the side wall of the square plunger 802, a second vent hole is penetratingly disposed at the other side of the square plunger sleeve 801 corresponding to the conducting tube 9, the bottom of the square plunger 802 abuts against the notch 409, wherein two side walls of the notch 409 are provided with rounded corners, so that the square plunger 802 can slide smoothly with the notch 409, in the non-contracted state of the third return spring 806, the second vent hole is located directly above the first vent hole 803.

Referring to fig. 6 to 7, specifically, the main hydraulic assembly 5 includes a main piston tube 501, a main piston plate 502, a first return spring 503, a support plate 504, and a T-shaped guide rod 505, the main piston tube 501 is disposed on an inner wall of the rear housing 302 near the upper side, the main piston plate 502 is slidably connected to the main piston tube 501, the support plate 504 is disposed on an inner side wall of the main piston tube 501 near the port, the T-shaped guide rod 505 is movably inserted into the support plate 504, the first return spring 503 is sleeved on the T-shaped guide rod 505, and the main piston tube 501 is filled with liquid.

When the air pressure inside the housing 3 changes, the air pressure inevitably increases due to the air leakage, so that the main piston pipe 501 is pushed by the pressure. When the hydrogen gas of the casing 3 is detected and processed, the entire main hydraulic component 5 is restored to the original state by the first return spring 503.

Referring to fig. 6, specifically, the secondary hydraulic assembly 6 includes a secondary piston tube 601, a secondary piston plate 602, and a second return spring 603, the secondary piston tube 601 communicates with the primary piston tube 501, and the tube diameter ratio therebetween is 1: 6.

due to the pipe diameter ratio, after the primary piston plate 502 moves a corresponding distance, the pressure conduction makes the secondary piston plate 602 move in multiples, and the reflected displacement is more obvious on the indicating rod 7.

Referring to fig. 5, specifically, the adjustment assembly 4 further includes a fourth return spring 405, a circular sliding plate 406 and a circular sleeve 407, the circular sliding plate 406 is fixedly sleeved on an outer side wall of the rotating rod 404, the fourth return spring 405 is sleeved on an outer side wall of the rotating rod 404, the rotating rod 404 penetrates through a side wall of the front casing 301, the circular sleeve 407 is fixedly connected with an inner wall of the front casing 301, and the circular sliding plate 406 is sealingly and slidably disposed in the circular sleeve 407.

During operation, the rotary handle 401 can be rotated and pulled to enable the circular sliding plate 406 to move outwards, the whole space inside the housing 3 is increased to form a similar negative pressure state, if the joint of the output port end of the hydrogen storage bottle 2 and the output pipe 201 leaks, hydrogen can be sucked out quickly, then the inside of the housing 3 is filled quickly to change the internal pressure, the pressure reflected on the main piston plate 502 can be larger, the leakage degree is enlarged, and the detection personnel can observe the hydrogen quickly.

Referring to fig. 3, specifically, a square opening 10 is provided on a vertical side wall of the front housing 301 opposite to the rear housing 302, a rubber sheet 5 is provided in the square opening 10, a rubber strip 6 is provided on a side wall of the front housing 301 opposite to the rear housing 302, and a part of the rubber strip 6 is adhered and fixed to the rubber sheet 5.

Through set up sheet rubber 5 on square mouth 10, can be adapted to the pipe diameter of multiple aperture size, set up rubber strip 6 through the increase, then can effectively seal the delivery outlet lateral wall on output tube 201 or the hydrogen storage bottle 2, prevent that housing 3 from leaking gas.

Starting a conduction stage: when the hydraulic assembly is in work, the rotary handle 401 is rotated by 90 degrees or more, the rotary rod 404 drives the cylindrical block 408 to rotate, the notch 409 is separated from the square plunger 802, the square plunger 802 is moved upwards, the first vent 803 is communicated with the conduction pipe 9 and the second vent, the pressure in the secondary hydraulic assembly 6 is kept consistent with the pressure in the housing 3, the rotary handle 401 is rotated and clamped with the latch 403, the square plunger 802 is abutted with the notch 409 again, the secondary hydraulic assembly 6 is sealed again after being conducted, in addition, one end of the primary hydraulic assembly 5 is communicated with the housing 3, and the column hydraulic assembly 5 is kept consistent with the pressure in the hydraulic assembly 6.

A detection stage: when the device works, whether the output pipe 201 of the output port of the hydrogen storage bottle 2 is connected with the branch pipe 202 is judged to be leaked. If the connection is leaked, the pressure applied to the master piston plate 502 of the primary hydraulic assembly 5 increases and is pushed to move to one side of the secondary hydraulic assembly 6, and since the secondary piston pipe 601 is communicated with the master piston pipe 501, the internal pressure is kept constant, and the pipe diameter ratio between the two pipes is 1: 6, make main piston plate 502 to one side removal a short distance, secondary piston plate 602 moves great distance to the equidirectional removal to drive the outside removal of indication rod 7 to housing 3, thereby whether the detection personnel can stretch out the junction of judging output tube 201 and branch pipe 202 of output end through observing indication rod 7 and whether take place to leak, through the conduction effect of pressure, can the quick accurate condition of judging whether gas leakage.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. A hydrogen leakage detection device for a hydrogen energy bus comprises a bus body (1) and a hydrogen storage bottle (2) arranged under a chassis of the bus body (1), an output pipe (201) is arranged at the output port of the hydrogen storage bottle (2), a branch pipe (202) is fixedly connected at the port of the output pipe (201) through a flange, it is characterized in that the joint of the output pipe (201) and the branch pipe (202) is sleeved with a housing (3), the housing (3) comprises a front housing (301) and a rear housing (302), a hydraulic amplifying mechanism is arranged on the side wall of the rear housing (302), the hydraulic amplifying mechanism comprises an adjusting component (4), a primary hydraulic component (5), a secondary hydraulic component (6) and a conducting component (8), the movable end of the secondary hydraulic component (6) is fixedly connected with an indicating rod (7), the indicating rod (7) is sealed and movably penetrates through the side wall of the rear cover shell (2);

the adjusting component (4) is arranged on the side wall of the front cover shell (301) and used for starting the conducting component (8) to work;

the main hydraulic component (5) is arranged on the side wall of the rear housing (202) and is used for driving the movable end of the secondary hydraulic component (6) to move;

the secondary hydraulic component (6) is arranged on the side wall of the main hydraulic component (5), is communicated with the interior of the main hydraulic component and is used for amplifying the movable stroke of the main hydraulic component (5);

and the conducting assembly (8) is arranged on one side of the secondary hydraulic assembly (6) and communicated with the interior of the secondary hydraulic assembly, so that the internal pressure of the secondary hydraulic assembly is consistent with the internal pressure of the housing (3) in an initial state.

2. The hydrogen leakage detection device for the hydrogen energy bus according to claim 1, the adjusting component (4) comprises a rotary handle (401), a fixing plate (402), a latch (403), a rotary rod (404), a cylindrical block (408) and a notch (409), the rotating rod (404) is movably arranged on the side wall of the front encloser (201), one end of the rotating rod (404) positioned at the outer side of the encloser (3) is fixedly connected with a rotating handle (401), and the other end of the rotating rod (404) is fixedly connected with a cylindrical block (408), the outer side wall of the cylindrical block (408) is provided with a gap (409), the outer side wall of the front housing (201) is provided with a fixing plate (402), and the side wall of the upper end of the fixed plate (402) is provided with a plurality of latch teeth (403) at equal intervals, the rotary handle (401) is inserted between two latch teeth (403).

3. The hydrogen leakage detection device for the hydrogen-powered bus according to claim 1, wherein the main hydraulic assembly (5) comprises a main piston pipe (501), a main piston plate (502), a first return spring (503), a support plate (504) and a T-shaped guide rod (505), the main piston pipe (501) is arranged on the inner wall of the rear housing (302) close to the upper side, the main piston plate (502) is connected to the main piston pipe (501) in a sliding mode, the support plate (504) is arranged on the inner side wall of the main piston pipe (501) close to the port, the T-shaped guide rod (505) is movably inserted on the support plate (504), the first return spring (503) is sleeved on the T-shaped guide rod (505), and liquid is filled in the main piston pipe (501).

4. The hydrogen leakage detection device for the hydrogen-powered bus according to claim 1, wherein the secondary hydraulic assembly (6) comprises a secondary piston tube (601), a secondary piston plate (602) and a second return spring (603), the secondary piston tube (601) is communicated with the main piston tube (501), and the diameter ratio of the secondary piston tube to the main piston tube is 1: 6.

5. the hydrogen leakage detection device for the hydrogen energy bus according to claim 4, wherein the conducting assembly (8) comprises a square plunger sleeve (801), a square plunger (802), a first vent hole (803), a mounting ear (804), a T-shaped fixing rod (805) and a third return spring (806), the square plunger sleeve (801) is sleeved outside the square plunger (802) in a sealing manner, the mounting ears (804) are symmetrically arranged on two sides of the square plunger (802) located below, the T-shaped fixing rod (805) is fixedly arranged at the upper end of the mounting ear (804), the third return spring (806) is sleeved outside the T-shaped fixing rod (805), the secondary piston tube (601) is communicated with the square plunger sleeve (801) through the conducting tube (9), the first vent hole (803) penetrates through the side wall of the square plunger (802), the other side of the square plunger sleeve (801) corresponding to the conduction pipe (9) is provided with a second vent hole in a penetrating mode, the bottom of the square plunger (802) is abutted to the notch (409), and the second vent hole is located right above the first vent hole (803) in the uncontracted state of the third return spring (806).

6. The hydrogen leakage detection device for the hydrogen energy bus according to claim 2, wherein the adjustment assembly (4) further comprises a fourth return spring (405), a circular sliding plate (406) and a circular sleeve (407), the circular sliding plate (406) is fixedly sleeved on the outer side wall of the rotating rod (404), the fourth return spring (405) is sleeved on the outer side wall of the rotating rod (404), the rotating rod (404) penetrates through the side wall of the front casing (301), the circular sleeve (407) is fixedly connected with the inner wall of the front casing (301), and the circular sliding plate (406) is arranged in the circular sleeve (407) in a sealing and sliding manner.

7. The hydrogen leakage detection device for the hydrogen energy bus as claimed in claim 1, wherein an indication scale (701) is arranged on the outer side of the indication rod (7).

8. The hydrogen leakage detection device for the hydrogen energy bus according to claim 1, wherein a square opening (10) is formed in a vertical side wall of the front housing (301) opposite to the rear housing (302), a rubber sheet (5) is arranged in the square opening (10), a rubber strip (6) is arranged on a side wall of the front housing (301) opposite to the rear housing (302), and part of the rubber strip (6) is adhered and fixed with the rubber sheet (5).