CN113914888A - Tunnel structure for hydrogen energy tramcar - Google Patents
Tunnel structure for hydrogen energy tramcar Download PDFInfo
- Publication number
- CN113914888A CN113914888A CN202111203179.7A CN202111203179A CN113914888A CN 113914888 A CN113914888 A CN 113914888A CN 202111203179 A CN202111203179 A CN 202111203179A CN 113914888 A CN113914888 A CN 113914888A
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- CN
- China
- Prior art keywords
- hydrogen
- tunnel
- powered
- tram
- main body
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000001257 hydrogen Substances 0.000 title claims abstract description 104
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 104
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title abstract description 80
- 238000007599 discharging Methods 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 3
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims 6
- 230000001681 protective effect Effects 0.000 claims 3
- 150000002431 hydrogen Chemical class 0.000 abstract description 20
- 238000000034 method Methods 0.000 description 9
- 238000004880 explosion Methods 0.000 description 6
- 239000000446 fuel Substances 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 230000001965 increasing effect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/14—Layout of tunnels or galleries; Constructional features of tunnels or galleries, not otherwise provided for, e.g. portals, day-light attenuation at tunnel openings
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/003—Ventilation of traffic tunnels
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a tunnel structure for a hydrogen energy tramcar, which comprises a tunnel main body structure and is characterized in that: the top of the tunnel main body structure is provided with an open hydrogen discharge hole and a support structure, and the inner cavity of the tunnel main body structure is communicated with the outside atmosphere through the open hydrogen discharge hole. The invention provides a novel structural form, which simulates the outdoor environment of a hydrogen energy tramcar by utilizing the characteristic that the density of hydrogen is much smaller than that of air and the hydrogen can rapidly escape upwards once leakage occurs, and the top of a tunnel adopts an open form and only retains necessary structural support so as to ensure that the hydrogen can rapidly escape to the outdoor air when leakage occurs.
Description
Technical Field
The invention belongs to the field of hydrogen energy tramcars, and particularly relates to a tunnel structure for a hydrogen energy tramcar.
Background
In recent years, the hydrogen energy industry has attracted attention worldwide, and has become the key point of strategic placement of countries in the world. The multi-country governments have already gone out of strategic development roadmaps of the hydrogen energy industry and explored industrialized development paths. As a new energy train, the hydrogen energy tramcar has the remarkable technical advantages of long endurance, full-line 'no contact net' operation, 'zero emission', long endurance and the like, is a novel urban rail transit type with brand new environmental protection, and has a wide application prospect.
The hydrogen energy tramcar adopts a hydrogen power system and a lithium titanate battery to supply power, and the hydrogen power system mainly comprises a fuel cell subsystem, a hydrogen storage subsystem, a cooling subsystem, a DC-DC power supply device, a power battery, a fuel cell energy control system and the like.
Hydrogen is used as flammable and explosive gas, and in extreme cases, once a hydrogen storage system is damaged, a large amount of hydrogen can be leaked, and safety accidents such as combustion, explosion and the like can be caused. The density of hydrogen is low, and the hydrogen can quickly escape to the upper air layer in an outdoor road section without any treatment of civil engineering facilities; however, in the underground road section, hydrogen is easy to accumulate on the top plate of the tunnel, and when the hydrogen concentration is between 4% and 75%, the explosion can be generated when the hydrogen meets sparks. In order to avoid disasters, vehicles are forbidden to pass through underground sections at present, so that the adaptability of the hydrogen energy tramcar is reduced, and the popularization of novel and clean traffic systems of the hydrogen energy tramcar is not facilitated.
Therefore, when the hydrogen energy tramcar is laid on a line, underground laying needs to be avoided as much as possible, so that when hydrogen leaks, the hydrogen is accumulated in the tunnel and cannot be discharged in time, and secondary disasters such as combustion, explosion and the like are caused. Thus reducing the adaptability of the hydrogen energy tram.
Therefore, a tunnel structure for a hydrogen-powered tramcar is particularly important for application to a hydrogen-powered tramcar, in terms of enhancing the practicability and safety of the hydrogen-powered tramcar and promoting the popularization of the hydrogen-powered tramcar.
Disclosure of Invention
In view of at least one of the above defects or improvement needs of the prior art, the invention provides a tunnel structure for a hydrogen energy tramcar, which provides a novel structural form, utilizes the characteristic that the density of hydrogen is much lower than that of air, and once leakage occurs, the hydrogen can rapidly escape upwards to simulate the outdoor form environment of the hydrogen energy tramcar, and the top of the tunnel adopts an open form, and only necessary structural support is reserved to ensure that the hydrogen can rapidly escape to the outdoor air when leakage occurs.
To achieve the above object, according to one aspect of the present invention, there is provided a tunnel structure for a hydrogen-powered tramcar, including a tunnel main body structure, characterized in that:
the top of the tunnel main body structure is provided with an open hydrogen discharge hole and a support structure, the inner cavity of the tunnel main body structure is communicated with the outside atmosphere through the open hydrogen discharge hole, and once hydrogen gas leaks from the hydrogen energy tramcar running in the tunnel main body structure, the hydrogen energy tramcar can be discharged to the outside atmosphere through the hydrogen discharge hole.
Further preferably, the hydrogen discharge hole has several.
Further preferably, a plurality of the hydrogen discharge holes are sequentially arranged at intervals along the longitudinal direction of the tunnel.
Further preferably, the hydrogen discharge opening comprises an opening protection wall, and the opening protection wall is higher than the ground layer of the tunnel.
Further preferably, a top inclined plate is arranged at an inclined upper transition position from the side wall to the hydrogen discharge hole at the upper part of the tunnel main body structure.
Further preferably, the inner wall surface of the tunnel structure is decorated by fair-faced concrete.
Further preferably, the tunnel main body structure adopts a pipe gallery structure.
Further preferably, the support structure is an air-impermeable enclosure structure.
Further preferably, two adjacent hole protection walls are connected through the supporting structure for supporting.
Further preferably, the tunnel main body structure is connected with the opening protecting wall through the supporting structure for supporting.
The above-described preferred features may be combined with each other as long as they do not conflict with each other.
The invention provides a novel structural form, which simulates the outdoor environment of a hydrogen energy tramcar by utilizing the characteristic that the density of hydrogen is much smaller than that of air and the hydrogen can rapidly escape upwards once leakage occurs, and the top of a tunnel adopts an open form and only retains necessary structural support so as to ensure that the hydrogen can rapidly escape to the outdoor air when leakage occurs.
The invention solves the problem that when the hydrogen energy tramcar leaks hydrogen in the tunnel, the hydrogen is easy to gather to cause disasters such as fire, explosion and the like by opening the tunnel top plate; the problem that the tramcar with the hydrogen energy cannot run below the ground is solved; the adaptability of the hydrogen energy tramcar is enhanced; the popularization of the novel traffic system of the hydrogen energy tramcar is facilitated.
By adopting the structure form, the problem of accumulation in the tunnel when hydrogen of the tramcar as a hydrogen energy source leaks can be effectively solved. The practicability and the safety of the hydrogen energy tramcar are greatly enhanced, and the development of the whole hydrogen energy industry is facilitated while the popularization of the hydrogen energy tramcar is promoted.
Drawings
Fig. 1 is a schematic plan view of a tunnel structure for a hydrogen-powered tram of an embodiment of the invention;
fig. 2 is a schematic cross-sectional view of a tunnel structure for a hydrogen-powered tram of an embodiment of the invention;
fig. 3 is a mechanical model perspective view of a tunnel structure for a hydrogen-powered tram according to an embodiment of the invention;
fig. 4 is a schematic diagram of hydrogen discharge of a tunnel structure for a hydrogen-powered tram according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other. The present invention will be described in further detail with reference to specific embodiments.
The hydrogen energy tramcar adopts a hydrogen power system and a lithium titanate battery to supply power, and the hydrogen power system mainly comprises a fuel cell subsystem, a hydrogen storage subsystem, a cooling subsystem, a DC-DC power supply device, a power battery, a fuel cell energy control system and the like.
Hydrogen is used as flammable and explosive gas, and in extreme cases, once a hydrogen storage system is damaged, a large amount of hydrogen can be leaked, and safety accidents such as combustion, explosion and the like can be caused. Therefore, when the hydrogen energy tramcar is laid on a line, underground laying needs to be avoided as much as possible so as to prevent hydrogen from gathering in a tunnel and being incapable of being discharged in time when the hydrogen is leaked, and when the hydrogen concentration is between 4% and 75%, an explosion can be generated when a spark occurs. In order to avoid disasters, vehicles are forbidden to pass through underground sections at present, so that the adaptability of the hydrogen energy tramcar is reduced, and the popularization of novel and clean traffic systems of the hydrogen energy tramcar is not facilitated.
As a preferred embodiment of the present invention, as shown in fig. 1 to 4, the present invention provides a completely new tunnel structure form of a hydrogen energy tramcar, which comprises a tunnel main body structure 1, wherein:
the tunnel main body structure 1 is provided with an open hydrogen discharging hole 7 and a supporting structure 6 at the top, the inner cavity of the tunnel main body structure 1 is communicated with the outside atmosphere through the open hydrogen discharging hole 7, and the hydrogen energy tramcar 3 running in the tunnel main body structure 1 can be discharged to the outside atmosphere through the hydrogen discharging hole 7 once hydrogen gas leakage occurs, as shown in figure 4.
As shown in fig. 1 and 3, it is further preferable that the hydrogen discharge hole 7 has several. Further preferably, a plurality of the hydrogen discharge holes 7 are sequentially arranged at intervals along the longitudinal direction of the tunnel.
Further preferably, the width of the hydrogen discharge hole 7 is smaller than the width of the inner cavity of the tunnel main body structure 1, and accounts for 50-80% of the latter. The sum of the lengths of all the hydrogen discharge holes 7 accounts for 70-90% of the longitudinal length of the tunnel.
As shown in fig. 1-2, it is further preferable that the hydrogen discharge hole 7 includes a hole protection wall 5, and the hole protection wall 5 is higher than the ground layer of the tunnel. Further preferably, the cross-sectional shape of the opening protection wall 5 is a strip shape, a track shape, an oval shape, or the like.
As shown in fig. 2, it is further preferable that a top sloping plate 2 is disposed at an upper part of the tunnel main body structure 1 at an oblique upper transition from the side wall to the hydrogen discharge hole 7. The top sloping plate 2 is a straight flat plate or an S-shaped curved plate, and is tangent with the upper end and the lower end.
Further preferably, the inner wall surface of the tunnel structure is decorated by fair-faced concrete. The inner wall is at least the combination of the side wall of the tunnel main body structure 1, the lower surface of the top inclined plate 2 and the inner surface of the hole protecting wall 5.
As shown in fig. 2, it is further preferred that the tunnel main body structure 1 adopts a pipe gallery structure, and the periphery of the pipe gallery is covered with soil 4.
As shown in fig. 1, it is further preferred that the support structure 6 is an airtight closed structure; in case of satisfying the strength, the support structure 6 may be configured as a partially permeable semi-closed structure, further increasing the exhaust passage of hydrogen. Further, the support structure 6 is a light-transmitting or semi-light-transmitting structure.
As shown in fig. 1, it is further preferable that two adjacent hole protection walls 5 are connected and supported by the support structure 6. Further preferably, the opening protecting wall 5 is connected with the tunnel main body structure 1 through the supporting structure 6 for supporting. The support structure 6 is not limited to plates, linkages, etc.
The key technology for ensuring that the hydrogen can quickly escape to the outdoor air when leakage occurs comprises the following aspects:
1. aiming at the condition that no corresponding design standard exists at present and aiming at solving the problem of the passing of the hydrogen energy tramcar in the underground section, the top of the tunnel except a necessary supporting system is completely in an open form, the outdoor form environment of the train is simulated, and once hydrogen is leaked, the hydrogen can be immediately discharged to the outdoor atmosphere;
2. the bare concrete decorative surface is adopted, so that the wall surface and the top surface of the tunnel are smooth and have no dead angle, and hydrogen is prevented from gathering at corners;
3. at the inclined position of the tunnel top plate, the leaked hydrogen is guided to be discharged to the hole opening by utilizing the physical characteristic that the density of the hydrogen is smaller than that of air and the hydrogen escapes upwards once leaking occurs;
in summary, compared with the prior art, the scheme of the invention has the following significant advantages:
1. the adaptability of the hydrogen energy tramcar is enhanced, and the problem that the hydrogen energy tramcar cannot run below the ground is solved. The popularization of a novel traffic system such as a hydrogen energy tramcar is facilitated;
2. the top is provided with a hole, so that natural lighting is increased, energy is saved, emission is reduced, and meanwhile, the special light and shadow effect also increases the interestingness of tramcar passengers;
3. the ventilation and smoke exhaust area is increased, the ventilation and smoke exhaust equipment of the tunnel and the corresponding machine room are not required to be additionally arranged, and the equipment investment and the construction land are reduced.
It will be appreciated that the embodiments of the system described above are merely illustrative, in that elements illustrated as separate components may or may not be physically separate, may be located in one place, or may be distributed over different network elements. Some or all of the modules can be selected according to actual needs to achieve the purpose of the scheme of the embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
In addition, it should be understood by those skilled in the art that in the specification of the embodiments of the present invention, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
In the description of the embodiments of the invention, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description. Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the embodiments of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects.
However, the disclosed method should not be interpreted as reflecting an intention that: that is, the claimed embodiments of the invention require more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of an embodiment of this invention.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the embodiments of the present invention, and not to limit the same; although embodiments of the present invention have been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A tunnel structure for a hydrogen-powered tram, comprising a tunnel body structure (1), characterized in that:
the top of the tunnel main body structure (1) is provided with an open hydrogen discharge hole (7) and a support structure (6), and the inner cavity of the tunnel main body structure (1) is communicated with the outside atmosphere through the open hydrogen discharge hole (7).
2. The tunnel structure for a hydrogen-powered tram as claimed in claim 1, characterized in that:
the hydrogen discharge holes (7) are provided with a plurality of holes.
3. The tunnel structure for a hydrogen-powered tram as claimed in claim 1, characterized in that:
the hydrogen discharge holes (7) are sequentially arranged at intervals along the longitudinal direction of the tunnel.
4. The tunnel structure for a hydrogen-powered tram as claimed in claim 1, characterized in that:
the hydrogen discharging hole (7) comprises a hole protective wall (5), and the hole protective wall (5) is higher than the ground layer of the tunnel.
5. The tunnel structure for a hydrogen-powered tram as claimed in claim 1, characterized in that:
and a top inclined plate (2) is arranged at the upper part of the tunnel main body structure (1) at the inclined transition position from the side wall to the hydrogen discharge hole (7).
6. The tunnel structure for a hydrogen-powered tram as claimed in claim 1, characterized in that:
the inner wall surface of the tunnel structure is decorated by fair-faced concrete.
7. The tunnel structure for a hydrogen-powered tram as claimed in claim 1, characterized in that:
the tunnel main body structure (1) adopts a pipe gallery structure.
8. The tunnel structure for a hydrogen-powered tram as claimed in claim 1, characterized in that:
the support structure (6) is an airtight closed structure.
9. The tunnel structure for a hydrogen-powered tram as claimed in claim 4, characterized in that:
two adjacent hole protection walls (5) are connected through the supporting structure (6) for supporting.
10. The tunnel structure for a hydrogen-powered tram as claimed in claim 4, characterized in that:
the tunnel portal protective wall (5) is connected with the tunnel main body structure (1) through the supporting structure (6) for supporting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111203179.7A CN113914888A (en) | 2021-10-15 | 2021-10-15 | Tunnel structure for hydrogen energy tramcar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111203179.7A CN113914888A (en) | 2021-10-15 | 2021-10-15 | Tunnel structure for hydrogen energy tramcar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113914888A true CN113914888A (en) | 2022-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111203179.7A Pending CN113914888A (en) | 2021-10-15 | 2021-10-15 | Tunnel structure for hydrogen energy tramcar |
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| Country | Link |
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| CN (1) | CN113914888A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3823654A (en) * | 1971-09-16 | 1974-07-16 | Wien Stadt | Ventilating system for subways |
| JPH1047000A (en) * | 1996-05-24 | 1998-02-17 | Ebara Corp | Ventilator in opening of automobile tunnel |
| EP1398461A1 (en) * | 2002-09-03 | 2004-03-17 | TLT-Turbo GmbH | Method and device for ventilating a tunnel |
| JP2006219853A (en) * | 2005-02-09 | 2006-08-24 | Taisei Corp | Tunnel equipped with purifying device, and method of purifying pollutant gas in tunnel |
| KR20100015023A (en) * | 2008-08-04 | 2010-02-12 | 윤명술 | Tunnel with exhausting structure of harmful materials |
| KR20110040373A (en) * | 2009-10-14 | 2011-04-20 | 한국기계연구원 | System for tunnel ventilation |
| CN109421547A (en) * | 2017-08-27 | 2019-03-05 | 南京乐朋电子科技有限公司 | A kind of solar energy and wind energy train |
| CN110117924A (en) * | 2019-05-29 | 2019-08-13 | 袁一军 | A kind of construction method of the artificial environment type traffic route utilized based on soil depth and its application |
| CN210948752U (en) * | 2019-09-23 | 2020-07-07 | 苏交科集团股份有限公司 | Tunnel portal pollutant centralized discharge device and tunnel |
| CN112556063A (en) * | 2020-12-24 | 2021-03-26 | 中国地质大学（武汉） | Building energy-saving ventilation system |
| CN113063197A (en) * | 2021-04-29 | 2021-07-02 | 中铁第四勘察设计院集团有限公司 | Hydrogen leakage monitoring and removing system and method in hydrogen energy tramcar garage |
| CN113136894A (en) * | 2021-05-13 | 2021-07-20 | 北京市市政工程设计研究总院有限公司 | Underground station suitable for hydrogen energy tramcar |
-
2021
- 2021-10-15 CN CN202111203179.7A patent/CN113914888A/en active Pending
Patent Citations (12)
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|---|---|---|---|---|
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| JPH1047000A (en) * | 1996-05-24 | 1998-02-17 | Ebara Corp | Ventilator in opening of automobile tunnel |
| EP1398461A1 (en) * | 2002-09-03 | 2004-03-17 | TLT-Turbo GmbH | Method and device for ventilating a tunnel |
| JP2006219853A (en) * | 2005-02-09 | 2006-08-24 | Taisei Corp | Tunnel equipped with purifying device, and method of purifying pollutant gas in tunnel |
| KR20100015023A (en) * | 2008-08-04 | 2010-02-12 | 윤명술 | Tunnel with exhausting structure of harmful materials |
| KR20110040373A (en) * | 2009-10-14 | 2011-04-20 | 한국기계연구원 | System for tunnel ventilation |
| CN109421547A (en) * | 2017-08-27 | 2019-03-05 | 南京乐朋电子科技有限公司 | A kind of solar energy and wind energy train |
| CN110117924A (en) * | 2019-05-29 | 2019-08-13 | 袁一军 | A kind of construction method of the artificial environment type traffic route utilized based on soil depth and its application |
| CN210948752U (en) * | 2019-09-23 | 2020-07-07 | 苏交科集团股份有限公司 | Tunnel portal pollutant centralized discharge device and tunnel |
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| CN113063197A (en) * | 2021-04-29 | 2021-07-02 | 中铁第四勘察设计院集团有限公司 | Hydrogen leakage monitoring and removing system and method in hydrogen energy tramcar garage |
| CN113136894A (en) * | 2021-05-13 | 2021-07-20 | 北京市市政工程设计研究总院有限公司 | Underground station suitable for hydrogen energy tramcar |
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