CN103982223B - Compressed-air supply system - Google Patents
Compressed-air supply system Download PDFInfo
- Publication number
- CN103982223B CN103982223B CN201410187843.7A CN201410187843A CN103982223B CN 103982223 B CN103982223 B CN 103982223B CN 201410187843 A CN201410187843 A CN 201410187843A CN 103982223 B CN103982223 B CN 103982223B
- Authority
- CN
- China
- Prior art keywords
- pipeline
- air
- compressed
- air supply
- compressed air
- Prior art date
- 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.)
- Active
Links
- 238000004378 air conditioning Methods 0.000 claims abstract description 17
- 238000003860 storage Methods 0.000 claims abstract description 17
- 239000007921 spray Substances 0.000 claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims 1
- 239000003245 coal Substances 0.000 abstract 1
- 239000003638 chemical reducing agent Substances 0.000 description 16
- 239000007789 gas Substances 0.000 description 12
- 238000009826 distribution Methods 0.000 description 7
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004083 survival effect Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Jet Pumps And Other Pumps (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
本发明属于压缩空气供给系统的技术领域；解决的技术问题为：提供一种结构简单、操作方便的压缩空气供给系统；采用的技术方案为：压缩空气供给系统，包括：压缩空气供给装置、气幕喷淋系统和蓄冰空调系统，压缩空气供给装置通过第一管道给蓄冰空调系统供气，压缩空气供给装置通过第二管道给气幕喷淋系统供气，所述压缩空气供给装置包括：汇流管道和至少一条分流管道，各分流管道的出气口均与汇流管道相连通，各分流管道的进气口均连接有一压缩空气瓶，各分流管道上均设有控制阀，所述汇流管道的两端分别与第一管道和第二管道相连通；本发明适用于煤矿领域。
The invention belongs to the technical field of compressed air supply system; the technical problem to be solved is: to provide a compressed air supply system with simple structure and convenient operation; the adopted technical solution is: compressed air supply system, including: compressed air supply device, gas For the curtain spray system and the ice storage air conditioning system, the compressed air supply device supplies air to the ice storage air conditioning system through the first pipeline, and the compressed air supply device supplies air to the air curtain spray system through the second pipeline, and the compressed air supply device includes : converging pipeline and at least one diverging pipeline, the air outlet of each diverging pipeline is connected with the converging pipeline, the air inlet of each distributing pipeline is connected with a compressed air bottle, each distributing pipeline is provided with a control valve, the converging pipeline Both ends of the pipe are respectively connected with the first pipe and the second pipe; the present invention is applicable to the field of coal mines.
Description
技术领域 technical field
本发明属于压缩空气供给系统的技术领域。 The invention belongs to the technical field of compressed air supply system.
背景技术 Background technique
避难硐室作为井下紧急避险系统的重要组成部分，可抵御瓦斯爆炸的冲击、隔绝有毒害的气体，尤其当井下发生矿难后，避难硐室可为无法及时撤离的人员提供安全、密闭的生存空间，并且为避险人员提供氧气、食物和水等生存必须物，从而为人们争取宝贵的救援时间。 As an important part of the underground emergency avoidance system, the refuge chamber can withstand the impact of gas explosions and isolate toxic gases. Especially when a mining disaster occurs underground, the refuge chamber can provide safe and airtight survival for those who cannot evacuate in time Space, and provide oxygen, food and water and other survival necessities for the escape personnel, so as to buy precious rescue time for people.
压缩空气供给系统是避难硐室的重要组成部分，可在矿井压风系统损坏时为气幕喷淋系统和无源蓄冰空调系统提供气源，保障避难硐室中的各个职能模块能够有条不紊地正常工作，从而为避险人员提供较为舒适的生存环境，进而保证了避险人员的体力充沛、精神饱满，为救援工作创造良好条件。 The compressed air supply system is an important part of the refuge chamber. It can provide air source for the air curtain sprinkler system and the passive ice storage air conditioning system when the mine compressed air system is damaged, so as to ensure the orderly operation of each functional module in the refuge chamber. Normal work, so as to provide a more comfortable living environment for the escape personnel, and then ensure that the escape personnel are physically strong and full of energy, and create good conditions for the rescue work.
但是现今的压缩空气供给系统结构复杂，安装操作不便，因所需的压缩空气瓶数量较多，使得整个压缩空气供给装置对避难硐室空间的占用率较高，而系统大多采用低压汇流供气方式，使得成本较高，且系统中的供气管路大多为不锈钢管，使得气体的压力损失率较大。 However, today's compressed air supply system has a complex structure and is inconvenient to install and operate. Due to the large number of compressed air bottles required, the entire compressed air supply device occupies a high rate of refuge chamber space, and most systems use low-pressure confluence air supply The method makes the cost higher, and most of the gas supply pipelines in the system are stainless steel pipes, which makes the pressure loss rate of the gas larger.
发明内容 Contents of the invention
本发明克服现有技术存在的不足，所要解决的技术问题为：提供一种结构简单、操作方便的压缩空气供给系统。 The present invention overcomes the shortcomings of the prior art, and the technical problem to be solved is: to provide a compressed air supply system with simple structure and convenient operation.
为了解决上述技术问题，本发明采用的技术方案为：压缩空气供给系统，包括：压缩空气供给装置、气幕喷淋系统和蓄冰空调系统，压缩空气供给装置通过第一管道给蓄冰空调系统供气，压缩空气供给装置通过第二管道给气幕喷淋系统供气，所述压缩空气供给装置包括：汇流管道和至少一条分流管道，各分流管道的出气口均与汇流管道相连通，各分流管道的进气口均连接有一压缩空气瓶，各分流管道上均设有控制阀，所述汇流管道的两端分别与第一管道和第二管道相连通。 In order to solve the above technical problems, the technical solution adopted by the present invention is: compressed air supply system, including: compressed air supply device, air curtain spray system and ice storage air conditioning system, the compressed air supply device supplies ice storage air conditioning system through the first pipeline Air supply, the compressed air supply device supplies air to the air curtain sprinkler system through the second pipeline, and the compressed air supply device includes: a confluence pipeline and at least one diversion pipeline, the air outlets of each diversion pipeline are connected with the confluence pipeline, each The air inlets of the diversion pipelines are all connected with a compressed air bottle, each diversion pipeline is provided with a control valve, and the two ends of the confluence pipeline communicate with the first pipeline and the second pipeline respectively.
所述第一管道上设有第一一级减压器，所述第二管道上设有第二一级减压器，所述第二一级减压器和所述气幕喷淋系统之间的第二管道上设有二级减压器；所述汇流管道上开有至少一个进气孔，每个进气孔均一一对应地与一个分流管道出气口相连通；所述汇流管道上设有压力表；所述汇流管道、第一管道和第二管道均为无缝钢管；所述的各分流管道均为不锈钢高压软管；所述控制阀为角座阀。 A first-stage pressure reducer is provided on the first pipeline, a second-stage pressure reducer is provided on the second pipeline, and the connection between the second-stage pressure reducer and the air curtain spray system There is a secondary pressure reducer on the second pipeline between them; at least one air inlet is opened on the said confluence pipeline, and each air inlet is uniformly communicated with a diversion pipeline gas outlet one by one; the said confluence pipeline There is a pressure gauge on it; the converging pipeline, the first pipeline and the second pipeline are all seamless steel pipes; each of the diverging pipelines is a stainless steel high-pressure hose; the control valve is an angle seat valve.
本发明与现有技术相比具有以下有益效果： Compared with the prior art, the present invention has the following beneficial effects:
1、本发明中，汇流管道和至少一条与压缩空气瓶相连的分流管道相连通，汇流管道的两端分别通过第一管道、第二管道与蓄冰空调系统、气幕喷淋系统相连，当蓄冰空调系统和气幕喷淋系统需要气源时，只需打开各分流管道上的控制阀，各压缩空气瓶中的压缩空气流经各分流管道，进入汇流管道中，最后从汇流管道的两端分别通过第一管道和第二管道进入蓄冰空调系统和气幕喷淋系统中，实现了同时向蓄冰空调系统和气幕喷淋系统进行供气的功能，如无需向上述两个系统进行供气，只需关闭各分流管道上的控制阀即可，由上可知，本发明结构简单，且操作方便。 1. In the present invention, the confluence pipeline is connected with at least one diversion pipeline connected with the compressed air bottle, and the two ends of the confluence pipeline are respectively connected with the ice storage air conditioning system and the air curtain spray system through the first pipeline and the second pipeline. When the ice storage air-conditioning system and the air curtain spraying system need air source, you only need to open the control valve on each distribution pipe, the compressed air in each compressed air bottle flows through each distribution pipe, enters the confluence pipe, and finally flows from the two confluence pipes. The air end enters the ice storage air conditioning system and the air curtain spraying system through the first pipe and the second pipe respectively, realizing the function of supplying air to the ice storage air conditioning system and the air curtain spraying system at the same time, if there is no need to supply air to the above two systems Gas, only need to close the control valves on the distribution pipelines, as can be seen from the above, the present invention is simple in structure and easy to operate.
2、本发明中，各分流管道均为不锈钢高压软管，各压缩空气瓶中的压缩空气通过各分流管道直接汇集到汇流管道中，无需进行低压汇流处理，大大降低了制造成本；本发明可应用于避难硐室中，将所有压缩空气瓶进行集中布置，不仅便于压缩空气瓶的维护管理，而且减小了整个压缩空气供给装置对避难硐室空间的占用率，提高了避难硐室的空间利用率；本发明中的供气管路——汇流管道、第一管道和第二管道均为无缝钢管，管路通径增大了，减少了气体压力的损失。 2. In the present invention, each distribution pipe is a stainless steel high-pressure hose, and the compressed air in each compressed air bottle is directly collected into the confluence pipe through each distribution pipe, without the need for low-pressure confluence treatment, which greatly reduces the manufacturing cost; the present invention can Applied in the refuge chamber, all the compressed air bottles are arranged in a centralized manner, which not only facilitates the maintenance and management of the compressed air bottles, but also reduces the occupancy rate of the entire compressed air supply device to the refuge chamber space, and improves the space of the refuge chamber Utilization rate; the gas supply pipeline in the present invention—the confluence pipeline, the first pipeline and the second pipeline are all seamless steel pipes, and the diameter of the pipeline is increased, which reduces the loss of gas pressure.
附图说明 Description of drawings
下面结合附图对本发明做进一步详细的说明： Below in conjunction with accompanying drawing, the present invention is described in further detail:
图1为本发明中结构示意图； Fig. 1 is a structural representation in the present invention;
图中：1为压缩空气供给装置，2为气幕喷淋系统，3为蓄冰空调系统，4为第一管道，5为第二管道，6为汇流管道，7为分流管道，8为压缩空气瓶，9为第一一级减压器，10为第二一级减压器，11为二级减压器，12为控制阀，13为压力表，14为气幕装置，15为喷淋装置15。 In the figure: 1 is the compressed air supply device, 2 is the air curtain spray system, 3 is the ice storage air conditioning system, 4 is the first pipeline, 5 is the second pipeline, 6 is the confluence pipeline, 7 is the diversion pipeline, 8 is the compression Air bottle, 9 is the first level pressure reducer, 10 is the second level pressure reducer, 11 is the second level pressure reducer, 12 is the control valve, 13 is the pressure gauge, 14 is the air curtain device, 15 is the spray Shower device 15.
具体实施方式 detailed description
本实施例中，压缩空气供给系统可应用于矿井下的避难硐室中，如图1所示，压缩空气供给系统，包括：压缩空气供给装置1、气幕喷淋系统2和蓄冰空调系统3，其中，气幕喷淋系统2包括气幕装置14和喷淋装置15，压缩空气供给装置1通过第一管道4给蓄冰空调系统3供气，压缩空气供给装置1通过第二管道5给气幕喷淋系统2供气；所述压缩空气供给装置1包括：汇流管道6和至少一条分流管道7，各分流管道7的出气口均与汇流管道6相连通，本实施例中，所述汇流管道6上开有至少一个进气孔，每个进气孔均一一对应地与一个分流管道7出气口相连通；各分流管道7的进气口均连接有一压缩空气瓶8，各分流管道7上均设有控制阀12，当有压缩空气瓶8发生泄漏时，将与此压缩空气瓶8对应的控制阀12关闭，其余的压缩空气瓶8的使用不受影响，具体地，所述控制阀12可为角座阀。 In this embodiment, the compressed air supply system can be applied in the refuge chamber under the mine, as shown in Figure 1, the compressed air supply system includes: compressed air supply device 1, air curtain spray system 2 and ice storage air conditioning system 3. Among them, the air curtain spray system 2 includes an air curtain device 14 and a spray device 15, the compressed air supply device 1 supplies air to the ice storage air conditioning system 3 through the first pipeline 4, and the compressed air supply device 1 passes through the second pipeline 5 Supply air to the air curtain sprinkler system 2; the compressed air supply device 1 includes: a confluence pipeline 6 and at least one diversion pipeline 7, and the air outlets of each diversion pipeline 7 are connected with the confluence pipeline 6. In this embodiment, the Have at least one air inlet on the converging pipe 6, and each air inlet is uniformly communicated with a shunt pipe 7 air outlets; the air inlets of each shunt pipe 7 are connected with a compressed air bottle 8, each A control valve 12 is provided on the distribution pipeline 7. When a compressed air bottle 8 leaks, the control valve 12 corresponding to the compressed air bottle 8 is closed, and the use of the remaining compressed air bottles 8 is not affected. Specifically, The control valve 12 can be an angle seat valve.
所述汇流管道6的两端分别与第一管道4和第二管道5相连通，所述分流管道7和压缩空气瓶8的数量主要取决于气幕喷淋系统2和蓄冰空调系统3的综合耗气量；本实施例中，所述汇流管道6、第一管道4和第二管道5可均为无缝钢管，汇流管道6出厂前经过22.5MPa压力、30min耐压试验后无泄漏，完全满足空气高压汇流的使用需求；本实施例中，汇流管道6、各压缩空气瓶8与各分流管道7之间可通过G5/8管螺纹连接，而各分流管道7均可为不锈钢高压软管，软管的端部采用60°锥面密封技术，可承受22.5MPa的高压，满足系统的压力要求。 The two ends of the converging pipeline 6 communicate with the first pipeline 4 and the second pipeline 5 respectively, and the quantity of the distribution pipeline 7 and the compressed air bottle 8 mainly depends on the number of the air curtain spraying system 2 and the ice storage air conditioning system 3. Comprehensive gas consumption; in this embodiment, the confluence pipeline 6, the first pipeline 4 and the second pipeline 5 can be all seamless steel pipes, and the confluence pipeline 6 has no leakage after 22.5MPa pressure and 30min pressure test before leaving the factory, completely Satisfy the use requirements of air high-pressure confluence; in this embodiment, the confluence pipeline 6, each compressed air bottle 8 and each diversion pipeline 7 can be connected by G5/8 pipe thread, and each diversion pipeline 7 can be a stainless steel high-pressure hose , The end of the hose adopts 60°cone sealing technology, which can withstand a high pressure of 22.5MPa to meet the pressure requirements of the system.
所述第一管道4上设有第一一级减压器9，所述第二管道5上设有第二一级减压器10，本实施例中，第一一级减压器9为“右进左出”型，第二一级减压器10为“左进右出”型，汇集至汇流管道6中的压缩空气经第一一级减压器9和第二一级减压器10进行减压后分别被输送至蓄冰空调系统3和气幕喷淋系统2，由于气幕喷淋系统2的工作压力约为0.4MPa，因此可在第二管道5上增设一个二级减压器11，具体地，所述二级减压器11设置于第二一级减压器10和气幕喷淋系统2之间的第二管道5上，而蓄冰空调系统3可直接使用汇流管道6输出的气体作为动力源；此外，可在所述汇流管道6上设置压力表13，可直观地从压力表13上观察汇流管道6中的气体压力，以作适当的调整，保证了整个供给系统的正常运行。 The first pipeline 4 is provided with a first-stage pressure reducer 9, and the second pipeline 5 is provided with a second-stage pressure reducer 10. In this embodiment, the first-stage pressure reducer 9 is "Right-in, left-out" type, the second-stage pressure reducer 10 is "left-in and right-out" type, the compressed air collected in the confluence pipeline 6 is decompressed by the first-stage pressure reducer 9 and the second-stage The device 10 is depressurized and transported to the ice storage air conditioning system 3 and the air curtain sprinkler system 2 respectively. Since the working pressure of the air curtain sprinkler system 2 is about 0.4MPa, a second stage reducer can be added on the second pipeline 5. Pressure reducer 11, specifically, the secondary pressure reducer 11 is arranged on the second pipeline 5 between the second stage pressure reducer 10 and the air curtain sprinkler system 2, and the ice storage air conditioning system 3 can directly use confluence The gas output by the pipeline 6 is used as a power source; in addition, a pressure gauge 13 can be set on the said confluence pipeline 6, and the gas pressure in the confluence pipeline 6 can be visually observed from the pressure gauge 13 to make appropriate adjustments, ensuring that the entire normal operation of the supply system.
本发明结构简单，操作方便，采用压缩空气高压汇流方式替代现有的低压汇流方式，大大降低了制造成本，对所有的压缩空气瓶8进行集中布置，提高了避难硐室空间的利用率，采用无缝钢管替代了不锈钢管作为供气管路，增大了管路通径，减少气体压力损失；上面结合附图对本发明的实施例作了详细说明，但是本发明并不限于上述实施例，在本领域普通技术人员所具备的知识范围内，还可以在不脱离本发明宗旨的前提下作出各种变化。 The present invention is simple in structure, easy to operate, adopts the compressed air high-pressure confluence method to replace the existing low-pressure confluence method, greatly reduces the manufacturing cost, and centrally arranges all the compressed air bottles 8 to improve the utilization rate of the refuge chamber space. The seamless steel pipe replaces the stainless steel pipe as the gas supply pipeline, which increases the diameter of the pipeline and reduces the gas pressure loss; the embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can also be made within the knowledge scope of those skilled in the art without departing from the gist of the present invention.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410187843.7A CN103982223B (en) | 2014-05-06 | 2014-05-06 | Compressed-air supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410187843.7A CN103982223B (en) | 2014-05-06 | 2014-05-06 | Compressed-air supply system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103982223A CN103982223A (en) | 2014-08-13 |
| CN103982223B true CN103982223B (en) | 2017-01-04 |
Family
ID=51274365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410187843.7A Active CN103982223B (en) | 2014-05-06 | 2014-05-06 | Compressed-air supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103982223B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111035871A (en) * | 2019-12-30 | 2020-04-21 | 深圳市永捷机电工程技术有限公司 | Intelligent compressed air system |
| CN114849095A (en) * | 2022-05-12 | 2022-08-05 | 爵格能源科技(苏州)有限公司 | Working method of breathing air pressure reduction system suitable for emergency shelter of shelter |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203847160U (en) * | 2014-05-06 | 2014-09-24 | 长治清华机械厂 | Compressed air feeding system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7533942B2 (en) * | 2006-02-27 | 2009-05-19 | Kennedy Metal Products & Buildings, Inc. | Mine refuge |
| CN201915997U (en) * | 2011-01-18 | 2011-08-03 | 辽宁卓异科技有限公司 | Air curtain system for mining movable hard refuge compartment |
| CN202467898U (en) * | 2011-12-01 | 2012-10-03 | 田鑫 | Escape capsule provided with hybrid-power ice-storing cooling device |
| CN202937299U (en) * | 2012-11-27 | 2013-05-15 | 中船重工（西安）东仪矿用安全装备有限公司 | Escape capsule air curtain isolating device with good safety |
| CN203394575U (en) * | 2013-07-30 | 2014-01-15 | 薛佩峰 | Air curtain spraying system used in escape capsule |
-
2014
- 2014-05-06 CN CN201410187843.7A patent/CN103982223B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203847160U (en) * | 2014-05-06 | 2014-09-24 | 长治清华机械厂 | Compressed air feeding system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103982223A (en) | 2014-08-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102635397A (en) | Air supply device of mining rescue capsule | |
| CN104971454B (en) | The special compressed-air foam automatic fire extinguishing system in tunnel | |
| CN205560282U (en) | Air pressure regulating device | |
| CN102230394B (en) | Secondary hole sealing system for improving coal bed gas extraction concentration | |
| CN102644478B (en) | Positive pressure keeping system of escape capsule | |
| CN103982223A (en) | Compressed air supply system | |
| CN109654374B (en) | Medical gas busbar control system and gas switching control method | |
| CN106870945B (en) | Natural gas pressure regulating skid-mounted device with multistage safety protection function | |
| CN203847160U (en) | Compressed air feeding system | |
| CN203394575U (en) | Air curtain spraying system used in escape capsule | |
| CN204034106U (en) | Nuclear power station fire water distribution system | |
| CN207364645U (en) | A kind of Central oxygen-supply is with can at the uniform velocity oxygen supply type bus-bar | |
| CN206372432U (en) | A kind of gas extinguishing system for having a spare duct | |
| CN207621678U (en) | Water-cooled bubbler safety guard | |
| CN202768059U (en) | Refuge chamber compressed oxygen centralized oxygen supply device | |
| CN209116026U (en) | A kind of automatic switchover medical gas busbar connector | |
| CN207648452U (en) | A kind of Simple bottle group filling apparatus filled by pump | |
| CN207996377U (en) | A kind of improved spherical tank water line system | |
| CN202531232U (en) | Air supply device used for mine escape capsule | |
| CN203743850U (en) | Special gas station system for tungsten deep processing enterprises | |
| CN203879539U (en) | Oxygen supplying device for coal mine refuge chamber | |
| CN205048162U (en) | Air seperation plant instrument supply gas and sealing gas support system | |
| CN202315053U (en) | Water inlet-outlet pipeline system based on high-low pressure water pump as well as fire fighting apparatus | |
| CN203847159U (en) | Air flow concentrating device | |
| CN202531233U (en) | Rescue capsule positive pressure maintenance system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No. 6 mailbox of Changzhi City, Shanxi Province, Shanxi Co-patentee after: China Academy of Launch Vehicle Technology Patentee after: Shanxi spaceflight Qinghua Equipment Co., Ltd. Address before: No. 6 mailbox of Changzhi City, Shanxi Province, Shanxi Co-patentee before: China Academy of Launch Vehicle Technology Patentee before: Qinghua Machinery Plant, Changzhi |