CN204327056U - Carbon dioxide ultrahigh speed phase transformation exploitation device - Google Patents
Carbon dioxide ultrahigh speed phase transformation exploitation device Download PDFInfo
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- CN204327056U CN204327056U CN201420785343.9U CN201420785343U CN204327056U CN 204327056 U CN204327056 U CN 204327056U CN 201420785343 U CN201420785343 U CN 201420785343U CN 204327056 U CN204327056 U CN 204327056U
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- carbon dioxide
- storage tube
- phase transformation
- ultrahigh speed
- speed phase
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/70—Combining sequestration of CO2 and exploitation of hydrocarbons by injecting CO2 or carbonated water in oil wells
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Abstract
The utility model discloses a kind of carbon dioxide ultrahigh speed phase transformation exploitation device, comprising: for storing the storage tube of liquid carbon dioxide; Flip flop equipment is connected with described storage tube, and when described flip flop equipment is subject to triggering, the liquid carbon dioxide heated in described storage tube makes it become gaseous carbon dioxide; Level pressure is let out and can be arranged at the exit portal of described storage tube by device, described level pressure let out can the pressure that is subject to of device reach preset value time, open the exit portal of described storage tube, discharge the gaseous carbon dioxide in described storage tube.Described carbon dioxide ultrahigh speed phase transformation exploitation device, after utilizing liquid carbon dioxide to become gaseous carbon dioxide outgoing, the feature that kinetic energy is very high, make to be broken by its effect coal (rock) body region, thus improve the Permeability Coefficent in Coal Seam in colliery, improve extraction or the mining efficiency of coal bed gas, increase economic efficiency, because the flames of anger and spark produce, avoid causing gas explosion and coal dust demolition accident and other potential safety hazards.
Description
Technical field
The utility model relates to coal mine machinery field, particularly relates to a kind of carbon dioxide ultrahigh speed phase transformation exploitation device.
Background technology
Coal bed gas, be commonly called as " gas ", refer to compose exist in coal seam with methane be main component, based on be adsorbed on matrix of coal particle surface, part be free in coal hole or the hydrocarbon gas be dissolved in coal seam water, it is the associated minerals resource of coal, belonging to Unconventional forage, is a kind of cleaning, high-grade energy and industrial chemicals.Permeability Coefficent in Coal Seam is the mark of reflection coal seam coal gas dynamics complexity, more determine the difficulty or ease of coal bed gas extraction, due to China's complex geologic conditions, highly gassy mine and coal and gas outburst mine Permeability Coefficent in Coal Seam extremely low, bring huge obstacle to the extraction of gas preventing and control and coal bed gas.
And fail to be applied due to the harsh use instrument complexity of service condition with existing anti-reflection technology, also fail to form a set of effective anti-reflection equipment technology.Because coal bed gas is when air concentration reaches 5%-16%, meeting naked light will explode, if use explosive, very easily sets off an explosion, causes mine disaster; Simultaneously likely due to the miscarriage to explosive, easy initiation accidental explosion, not only cause huge casualties and economic loss, and had a strong impact on the stable of society, these are all because the defect such as wayward, naked light explosion of explosive as a kind of blast causes.Urgently seek the multifunctional replacement equipment of strong, safe controlled, the non-naked light explosion of a kind of explosion power, improve the exploitation of coal-bed gas.
Utility model content
The purpose of this utility model is to provide a kind of carbon dioxide ultrahigh speed phase transformation exploitation device, improves the Permeability Coefficent in Coal Seam in colliery, improves the extraction efficiency of coal bed gas, increase economic efficiency, improve mine safety status, reduce mining costs, improve productivity effect.
For solving the problems of the technologies described above, the utility model embodiment provides a kind of carbon dioxide ultrahigh speed phase transformation exploitation device, comprise: storage tube, flip flop equipment and level pressure let out energy device, wherein, described storage tube is for storing liquid carbon dioxide, described flip flop equipment is connected with described storage tube, when described flip flop equipment is subject to triggering, the liquid carbon dioxide heated in described storage tube makes it become gaseous carbon dioxide, described level pressure lets out the exit portal that energy device is arranged at described storage tube, described level pressure let out can the pressure that is subject to of device reach preset value time, open the exit portal of described storage tube, discharge the gaseous carbon dioxide in described storage tube.
Preferably, described carbon dioxide ultrahigh speed phase transformation exploitation device also comprises startup termination, and it is outside that described start end headgear connects described flip flop equipment, controls the duty of described flip flop equipment.
Preferably, described carbon dioxide ultrahigh speed phase transformation exploitation device also comprises energy drag termination, and described energy drag termination is socketed the outside that described level pressure lets out energy device, controls the exit direction of the carbon dioxide in described storage tube.
Preferably, described carbon dioxide ultrahigh speed phase transformation exploitation device also comprises pressure meter, and described pressure meter is connected with described storage tube, for measuring the atmospheric pressure value in described storage tube.
Preferably, described carbon dioxide ultrahigh speed phase transformation exploitation device also comprises timing means, and described timing means is connected with described flip flop equipment, when described flip flop equipment is in running order, and during described timing means default time, triggers described flip flop equipment.
Preferably, the surface coverage of described storage tube has thermal isolation film.
Preferably, described carbon dioxide ultrahigh speed phase transformation exploitation device also comprises gasket seal, storage tube described in described gasket seal and described let out can sealing between sheet or described level pressure let out can the sealing of device and described energy drag termination.
Preferably, described carbon dioxide ultrahigh speed phase transformation exploitation device also comprises support, and described support installing is at the pipe shaft of described storage tube.
Carbon dioxide ultrahigh speed phase transformation exploitation device provided by the utility model, compared with prior art, has the following advantages:
Carbon dioxide ultrahigh speed phase transformation exploitation device provided by the utility model, comprise: storage tube, flip flop equipment and level pressure let out energy device, wherein, described storage tube is for storing liquid carbon dioxide, described flip flop equipment is connected with described storage tube, when described flip flop equipment is subject to triggering, the liquid carbon dioxide heated in described storage tube makes it become gaseous carbon dioxide, described level pressure lets out the exit portal that energy device is arranged at described storage tube, described level pressure let out can the pressure that is subject to of device reach preset value time, open the exit portal of described storage tube, discharge the gaseous carbon dioxide in described storage tube.After described flip flop equipment is triggered, described flip flop equipment heats the liquid carbon dioxide in described storage tube, liquid carbon dioxide is made to become the carbon dioxide of gaseous state, change is generally exceedingly fast, can control within one second, the pressure in described storage tube sharply becomes large, described level pressure let out can the pressure that is subject to of device reach preset value time, open the exit portal of described storage tube, discharge the gaseous carbon dioxide in described storage tube.Because the carbon dioxide of gaseous state was in high pressure conditions before outgoing, after outgoing, kinetic energy is very high, makes to be broken by the appearance of the object of its effect.In the process, sound is little, airborne dust is few, nontoxic pernicious gas produces, and can fundamentally avoid producing naked light and causing gas explosion and coal dust demolition accident.When applying within coal mines, the Permeability Coefficent in Coal Seam in the coal cinder region be applied can be increased, improve the extraction efficiency of coal bed gas, increase economic efficiency, improve mine safety status, reduce mining costs, improve productivity effect; When being applied in quarry, broken in the rock mass region be applied, reduce the difficulty of quarrying, increase work efficiency.
In sum, the carbon dioxide ultrahigh speed phase transformation exploitation device that the utility model embodiment provides, the operating efficiency of quarrying can be improved, the Permeability Coefficent in Coal Seam in colliery can be improved, improve the extraction efficiency of coal bed gas, increase economic efficiency, improve mine safety status, reduce mining costs, improve productivity effect.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram of a kind of detailed description of the invention of carbon dioxide ultrahigh speed phase transformation provided by the utility model exploitation device;
Fig. 2 is the schematic diagram of the another kind of detailed description of the invention of carbon dioxide ultrahigh speed phase transformation provided by the utility model exploitation device.
Detailed description of the invention
Just as described in the background section, in prior art, explosive cannot be used within coal mines because explosive can produce naked light, cannot Permeability Coefficent in Coal Seam be increased, bring huge obstacle to the extraction of gas preventing and control and coal bed gas.
Based on this, the utility model embodiment provides a kind of carbon dioxide ultrahigh speed phase transformation exploitation device, comprise: storage tube, flip flop equipment and level pressure let out energy device, wherein, described storage tube is for storing liquid carbon dioxide, described flip flop equipment is connected with described storage tube, when described flip flop equipment is subject to triggering, the liquid carbon dioxide heated in described storage tube makes it become gaseous carbon dioxide, described level pressure lets out the exit portal that energy device is arranged at described storage tube, described level pressure let out can the pressure that is subject to of device reach preset value time, open the exit portal of described storage tube, discharge the gaseous carbon dioxide in described storage tube.
In sum, the carbon dioxide ultrahigh speed phase transformation exploitation device that the utility model embodiment provides, after described flip flop equipment is triggered, heat the liquid carbon dioxide in described storage tube, make liquid carbon dioxide become the carbon dioxide of gaseous state, thus make the pressure in described storage tube sharply become large.Described level pressure let out can the pressure that is subject to of device reach preset value time, open the exit portal of described storage tube, discharge the gaseous carbon dioxide in described storage tube.Because the carbon dioxide of gaseous state was in high pressure conditions before outgoing, after outgoing, kinetic energy is very high, makes to be broken by the appearance of the object of its effect.In the process, sound is little, airborne dust is few, nontoxic pernicious gas produces, and can fundamentally avoid producing naked light and causing gas explosion and coal dust demolition accident.When applying within coal mines, the coal cinder being applied region can be made to occur breaking, increase the Permeability Coefficent in Coal Seam being applied coal cinder region, improve the extraction efficiency of coal bed gas, increase economic efficiency, improve mine safety status, reduce mining costs, improve productivity effect; When being applied in quarry, broken in the rock mass region be applied, reduce the difficulty of quarrying, increase work efficiency.
For enabling above-mentioned purpose of the present utility model, feature and advantage more become apparent, and are described in detail detailed description of the invention of the present utility model below in conjunction with accompanying drawing.
Set forth detail in the following description so that fully understand the utility model.But the utility model can be different from alternate manner described here to implement with multiple, those skilled in the art can when doing similar popularization without prejudice to when the utility model intension.Therefore the utility model is not by the restriction of following public concrete enforcement.
As with reference to figure 1, Fig. 1 being the schematic diagram that a kind of detailed description of the invention of device is exploited in carbon dioxide ultrahigh speed phase transformation provided by the utility model.
In a kind of detailed description of the invention, described carbon dioxide ultrahigh speed phase transformation exploitation device, comprise: storage tube 11, flip flop equipment 12 and level pressure let out energy device 13, wherein, described storage tube 11 is for storing liquid carbon dioxide, described flip flop equipment 12 is connected with described storage tube 11, when described flip flop equipment 12 is subject to triggering, the liquid carbon dioxide heated in described storage tube 11 makes it become gaseous carbon dioxide, described level pressure lets out the exit portal that energy device 13 is arranged at described storage tube 11, described level pressure let out can the pressure that is subject to of device 13 reach preset value time, open the exit portal of described storage tube 11, discharge the gaseous carbon dioxide in described storage tube 11.
Preferably, described carbon dioxide ultrahigh speed phase transformation exploitation device also comprises startup termination 14, and it is outside that described startup termination 14 is socketed described flip flop equipment 12, controls the duty of described flip flop equipment 12.The duty of described flip flop equipment 12 is controlled by described startup termination 14, described flip flop equipment 12 can be avoided not to be in the processes such as transport, described flip flop equipment 12 is surprisingly triggered, release gaseous carbon dioxide causes damage, even have an accident, make described carbon dioxide ultrahigh speed phase transformation exploit device operationally, ensure the safety of staff.It should be noted that, the utility model is not specifically limited the duty how described startup termination 14 and its control described flip flop equipment 12, as long as worker safety when can ensure in transport and use described carbon dioxide ultrahigh speed phase transformation exploitation device.
On the basis of above-described embodiment, in a kind of detailed description of the invention of the present utility model, described carbon dioxide ultrahigh speed phase transformation exploitation device also comprises energy drag termination 15, described energy drag termination 15 is socketed the outside that described level pressure lets out energy device, controls the exit direction of the carbon dioxide in described storage tube 11.Described carbon dioxide ultrahigh speed phase transformation exploitation device also comprises energy drag termination 15, described energy drag termination 15 controls the exit direction of the carbon dioxide in described storage tube 11, make it possible to control described carbon dioxide ultrahigh speed phase transformation exploitation device and carry out directed explosion, increase work efficiency, make only to produce demolition effect at assigned direction, improve the safety of staff.
It should be noted that, the utility model is not specifically limited the guiding of gaseous carbon dioxide described energy drag termination 15 and its, as long as can control the directed outgoing gaseous carbon dioxide in described energy drag termination 15, carries out directional blasting.
On the basis of above-described embodiment, in a kind of detailed description of the invention of the present utility model, described carbon dioxide ultrahigh speed phase transformation exploitation device also comprises pressure meter, and described pressure meter is connected with described storage tube 11, for measuring the atmospheric pressure value in described storage tube 11.Described carbon dioxide ultrahigh speed phase transformation exploitation device comprises pressure meter, can understand the state of the carbon dioxide in described storage tube 11 at any time.As described in after carbon dioxide in storage tube 11 leaks gas, the air pressure of the carbon dioxide in described storage tube 11 is not enough; Hypercapnia in described storage tube 11, air pressure is too high.And in the constancy of volume of described storage tube 11, in its allowed band, the number of the carbon dioxide contained, determines the power of explosion.Therefore, the carbon dioxide of suitable quantity can be filled according to the effect of required explosion, cost-saving, increase work efficiency.
It should be noted that, the force value that can also show according to described pressure meter, obtains other information of described storage tube 11, as aging etc., the utility model can also use other devices to obtain the status information of described storage tube 11, and the utility model is not specifically limited this.
On the basis of above-described embodiment, in a kind of detailed description of the invention of the present utility model, described carbon dioxide ultrahigh speed phase transformation exploitation device also comprises timing means, described timing means is connected with described flip flop equipment 12, when described flip flop equipment 12 is in running order, and described timing means preset time time, trigger described flip flop equipment 12.Described carbon dioxide ultrahigh speed phase transformation exploitation device also comprises timing means, can implement timing explosion.In the triggered time of the good described flip flop equipment 12 of staff's predetermined set, after entering safety zone, carry out explosion, improve safety.
It should be noted that, the utility model, to using the timing means of which kind of type and how carrying out clocked flip, is not specifically limited, as long as described carbon dioxide ultrahigh speed phase transformation exploitation device can carry out timing explosion.
On the basis of above-described embodiment, in a kind of detailed description of the invention of the present utility model, the surface coverage of described storage tube 11 has thermal isolation film.The surface coverage of described storage tube 11 has thermal isolation film, can avoid in transportation, make the liquid carbon dioxide in described storage tube 11 naturally be heated when running into high temperature, make the pressure in described storage tube 11 become large, damage described storage tube 11 or reveal carbon dioxide.
It should be noted that, the utility model is not specifically limited the particular type of described thermal isolation film and thickness, as long as can reduce or stop the carbon dioxide in described storage tube 11 naturally to absorb extraneous heat.
On the basis of above-described embodiment, in a kind of detailed description of the invention of the present utility model, as shown in Figure 2, described carbon dioxide ultrahigh speed phase transformation exploitation device also comprises gasket seal 16, storage tube 11 and described level pressure described in described gasket seal 16 let out can sealing between device 13 or described level pressure let out can the sealing of device 13 and described energy drag termination 15.Also comprise gasket seal 16 at described carbon dioxide ultrahigh speed phase transformation exploitation device, the generation that carbon dioxide is revealed can be reduced when transporting or use, reducing costs.
It should be noted that, other seal member can also be used to let out between energy device 13 to described storage tube 11 and described level pressure for the utility model and described level pressure is let out and can be sealed between device 13 and described energy drag termination 15, and the utility model is not specifically limited this.
On the basis of above-described embodiment, in a kind of detailed description of the invention of the present utility model, described carbon dioxide ultrahigh speed phase transformation exploitation device also comprises support, and described support installing is at the pipe shaft of described storage tube 11.Described carbon dioxide ultrahigh speed phase transformation exploitation device also comprises support, and described carbon dioxide ultrahigh speed phase transformation can be facilitated to exploit transport and the use of device.When using described storage tube 11, may run into the situation being difficult to described carbon dioxide ultrahigh speed phase transformation exploitation device is fixed to a certain position, carbon dioxide ultrahigh speed phase transformation exploitation device is arranged on cliff as will be described, is arranged on smooth body surface etc.
It should be noted that, the concrete shape etc. of the utility model to described support is not specifically limited, as long as described carbon dioxide ultrahigh speed phase transformation exploitation device effectively can be fixed, make it not move freely, can be easily installed in use and be applied on object.
In sum, the carbon dioxide ultrahigh speed phase transformation exploitation device that the utility model embodiment provides, after utilizing liquid carbon dioxide to become gaseous carbon dioxide outgoing instantaneously, kinetic energy is very high, make to be broken by its effect coal cinder region, thus improve the Permeability Coefficent in Coal Seam in colliery, improve the extraction efficiency of coal bed gas, increase economic efficiency, because the flames of anger and spark produce, avoid causing gas explosion and coal dust demolition accident, and due to the generation without toxic gas, can not work the mischief to the health of staff.When using in other, explosion being carried out to the mine of iron ore, explosion is carried out to rock, explosion etc. being carried out to riverbed, can increase work efficiency.When described carbon dioxide ultrahigh speed phase transformation exploitation device is applied in colliery, exploit the coal cinder region of device to assigned direction by described carbon dioxide ultrahigh speed phase transformation and carry out explosion, the coal cinder in this region is combined more loose, can the operating efficiency of coal-cutting machinery, reduce mining costs, increase economic efficiency.When described carbon dioxide ultrahigh speed phase transformation exploitation device is applied in quarry, is broken in the rock mass region be applied, reduce the difficulty of quarrying, increase work efficiency.And a large amount of described carbon dioxide ultrahigh speed phase transformation exploitation device used, the use of explosive can be reduced, the pollution of the environment of minimizing and air quality is damaged, contribute to reducing the gas concentration lwevel in air in addition, alleviate greenhouse effect.
Above carbon dioxide ultrahigh speed phase transformation exploitation device provided by the utility model is described in detail.Apply specific case herein to set forth principle of the present utility model and embodiment, the explanation of above embodiment just understands method of the present utility model and core concept thereof for helping.Should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model principle, can also carry out some improvement and modification to the utility model, these improve and modify and also fall in the protection domain of the utility model claim.
Claims (8)
1. a carbon dioxide ultrahigh speed phase transformation exploitation device, it is characterized in that, comprise: storage tube, flip flop equipment and level pressure let out energy device, wherein, described storage tube is for storing liquid carbon dioxide, described flip flop equipment is connected with described storage tube, when described flip flop equipment is subject to triggering, the liquid carbon dioxide heated in described storage tube makes it become gaseous carbon dioxide, described level pressure lets out the exit portal that energy device is arranged at described storage tube, described level pressure let out can the pressure that is subject to of device reach preset value time, open the exit portal of described storage tube, discharge the gaseous carbon dioxide in described storage tube.
2. carbon dioxide ultrahigh speed phase transformation exploitation device as claimed in claim 1, is characterized in that, described carbon dioxide ultrahigh speed phase transformation exploitation device also comprises startup termination, and it is outside that described start end headgear connects described flip flop equipment, controls the duty of described flip flop equipment.
3. carbon dioxide ultrahigh speed phase transformation exploitation device as claimed in claim 1, it is characterized in that, described carbon dioxide ultrahigh speed phase transformation exploitation device also comprises energy drag termination, described energy drag termination is socketed the outside that described level pressure lets out energy device, controls the exit direction of the carbon dioxide in described storage tube.
4. carbon dioxide ultrahigh speed phase transformation exploitation device as claimed in claim 1, is characterized in that, described carbon dioxide ultrahigh speed phase transformation exploitation device also comprises pressure meter, and described pressure meter is connected with described storage tube, for measuring the atmospheric pressure value in described storage tube.
5. carbon dioxide ultrahigh speed phase transformation exploitation device as claimed in claim 1, it is characterized in that, described carbon dioxide ultrahigh speed phase transformation exploitation device also comprises timing means, described timing means is connected with described flip flop equipment, when described flip flop equipment is in running order, and described timing means preset time time, trigger described flip flop equipment.
6. the carbon dioxide ultrahigh speed phase transformation exploitation device as described in any one of claim 1-5, it is characterized in that, the surface coverage of described storage tube has thermal isolation film.
7. carbon dioxide ultrahigh speed phase transformation exploitation device as claimed in claim 6, it is characterized in that, described carbon dioxide ultrahigh speed phase transformation exploitation device also comprises gasket seal, storage tube described in described gasket seal and described let out can sealing between sheet or described level pressure let out can the sealing of device and described energy drag termination.
8. carbon dioxide ultrahigh speed phase transformation exploitation device as claimed in claim 6, is characterized in that, described carbon dioxide ultrahigh speed phase transformation exploitation device also comprises support, and described support installing is at the pipe shaft of described storage tube.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420785343.9U CN204327056U (en) | 2014-12-11 | 2014-12-11 | Carbon dioxide ultrahigh speed phase transformation exploitation device |
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| CN201420785343.9U CN204327056U (en) | 2014-12-11 | 2014-12-11 | Carbon dioxide ultrahigh speed phase transformation exploitation device |
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| CN204327056U true CN204327056U (en) | 2015-05-13 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104930933A (en) * | 2015-06-25 | 2015-09-23 | 永州市鑫东森机械装备有限公司 | Carbon dioxide exploder |
| CN106194144A (en) * | 2016-08-04 | 2016-12-07 | 重庆大学 | Liquid carbon dioxide phase transformation directional blasting fracturing device |
| CN106703773A (en) * | 2015-08-03 | 2017-05-24 | 中国矿业大学 | Liquid carbon dioxide bomb, propping agent blasting anti-reflection method and device |
| CN109282707A (en) * | 2018-10-22 | 2019-01-29 | 安徽理工大学 | Liquid carbon dioxide phase transformation fracturing device |
| CN111043921A (en) * | 2019-12-19 | 2020-04-21 | 中南大学 | Microwave gain type CO2Phase-change energy-gathering blasting rock cracking system and method for blasting cracked rock |
| CN114934747A (en) * | 2022-05-24 | 2022-08-23 | 中南大学 | Phase-change presplitting combined tunneling drill bit and method |
-
2014
- 2014-12-11 CN CN201420785343.9U patent/CN204327056U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104930933A (en) * | 2015-06-25 | 2015-09-23 | 永州市鑫东森机械装备有限公司 | Carbon dioxide exploder |
| CN106703773A (en) * | 2015-08-03 | 2017-05-24 | 中国矿业大学 | Liquid carbon dioxide bomb, propping agent blasting anti-reflection method and device |
| CN106194144A (en) * | 2016-08-04 | 2016-12-07 | 重庆大学 | Liquid carbon dioxide phase transformation directional blasting fracturing device |
| CN109282707A (en) * | 2018-10-22 | 2019-01-29 | 安徽理工大学 | Liquid carbon dioxide phase transformation fracturing device |
| CN109282707B (en) * | 2018-10-22 | 2023-09-05 | 安徽理工大学 | Liquid carbon dioxide phase change fracturing device |
| CN111043921A (en) * | 2019-12-19 | 2020-04-21 | 中南大学 | Microwave gain type CO2Phase-change energy-gathering blasting rock cracking system and method for blasting cracked rock |
| CN111043921B (en) * | 2019-12-19 | 2021-05-11 | 中南大学 | Microwave gain type CO2Phase-change energy-gathering blasting rock cracking system and method for blasting cracked rock |
| CN114934747A (en) * | 2022-05-24 | 2022-08-23 | 中南大学 | Phase-change presplitting combined tunneling drill bit and method |
| CN114934747B (en) * | 2022-05-24 | 2023-03-14 | 中南大学 | Phase-change presplitting combined tunneling drill bit and method |
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| C14 | Grant of patent or utility model | ||
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| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Du Zesheng Inventor after: Fan Yingchun Inventor after: Wang Chunlin Inventor after: Du Maochun Inventor after: Zhu Xianbin Inventor before: Du Zesheng Inventor before: Fan Yingchun Inventor before: Wang Chunming Inventor before: Du Maochun Inventor before: Zhu Xianbin |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: DU ZESHENG FAN YINGCHUN WANG CHUNMING DU MAOCHUN ZHU XIANBIN TO: DU ZESHENG FAN YINGCHUN WANG CHUNLIN DU MAOCHUN ZHU XIANBIN |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150513 Termination date: 20151211 |
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| EXPY | Termination of patent right or utility model |