CN203905923U - Retreating type gas injection spray nozzle for underground coal gasification - Google Patents
Retreating type gas injection spray nozzle for underground coal gasification Download PDFInfo
- Publication number
- CN203905923U CN203905923U CN201420339791.6U CN201420339791U CN203905923U CN 203905923 U CN203905923 U CN 203905923U CN 201420339791 U CN201420339791 U CN 201420339791U CN 203905923 U CN203905923 U CN 203905923U
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- Prior art keywords
- head body
- head
- underground coal
- coal gasification
- gas injection
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- Expired - Lifetime
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- 238000002309 gasification Methods 0.000 title claims abstract description 53
- 239000003245 coal Substances 0.000 title claims abstract description 48
- 238000002347 injection Methods 0.000 title claims abstract description 42
- 239000007924 injection Substances 0.000 title claims abstract description 42
- 239000007921 spray Substances 0.000 title abstract 10
- 238000009529 body temperature measurement Methods 0.000 claims description 24
- 238000007789 sealing Methods 0.000 claims description 12
- 238000001514 detection method Methods 0.000 abstract description 10
- 238000002485 combustion reaction Methods 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 53
- 239000003795 chemical substances by application Substances 0.000 description 13
- 238000000034 method Methods 0.000 description 10
- 230000004224 protection Effects 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 4
- 230000006735 deficit Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 229910052704 radon Inorganic materials 0.000 description 2
- SYUHGPGVQRZVTB-UHFFFAOYSA-N radon atom Chemical compound [Rn] SYUHGPGVQRZVTB-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Testing Or Calibration Of Command Recording Devices (AREA)
Abstract
The utility model discloses a retreating type gas injection spray nozzle for underground coal gasification, relates to the field of the underground coal gasification and aims at solving the problems that the combustion working surface of a gasification furnace cannot be monitored in real time, and thus ground adjusting is lagged. The retreating type gas injection spray nozzle for the underground coal gasification comprises a spray nozzle body, wherein the spray nozzle body is internally provided with a gas flow passage, the front end of the spray nozzle body is provided with a gas outlet, the gas flow passage is communicated with the gas outlet, the side wall of the spray nozzle body is internally provided with a detection device, the detection device comprises a detection head and an energy source, one end of the detection head is connected with the energy source, and the other end of the detection head is located at the front end of the spray nozzle body after the other end of the detection head penetrates through the side wall of the spray nozzle body. The retreating type gas injection spray nozzle for the underground coal gasification, disclosed by the utility model, is used for the underground coal gasification.
Description
Technical field
The utility model relates to coal underground gasification technology field, relates in particular to retrusive gas injection shower nozzle for a kind of underground coal gasification(UCG).
Background technology
Underground coal gasification(UCG) refers to the burning that the coal in underground is had to control, by the heat effect of coal and chemical action being produced to the process of fuel gas, in this process, the continuous burned gasification in coal seam and form combustion dead zone, the control in process mainly refers to the control to the control of cavity-growth and temperature.
In prior art, the detection of cavity-growth and temperature is mainly to adopt thermocouple coal seam thermometric or survey the means such as radon.Adopt thermocouple coal seam temperature sensing means, need in coal seam, beat vertical shaft, be subject to deviation that boring builds, the impact of the factors such as the difference of seam construction structure and coal seam water, make a lot of thermometer holes can not play the effect of thermometric, and the temperature of measuring can not reflect the true temperature of flame range; And adopt, survey the profile that radon means can only reflect gasification furnace burning face, and lag time is longer, disturbing factor is more, can not reflect the real operating condition of gasification furnace burning face and cavity-growth situation, thereby makes the control lag on ground.
Utility model content
Embodiment of the present utility model provides retrusive gas injection shower nozzle for a kind of underground coal gasification(UCG), gas injection shower nozzle to the process of gasification coal seam gas injection agent in, real-time monitoring that can be to gasification furnace burning face, and then make the adjusting on ground can be promptly and accurately.
For achieving the above object, embodiment of the present utility model adopts following technical scheme: retrusive gas injection shower nozzle for a kind of underground coal gasification(UCG), comprise head body, in described head body, be provided with gas channel, the front end of described head body offers gas outlet, described gas channel is communicated with described gas outlet, it is characterized in that, in the sidewall of described head body, be provided with sniffer, described sniffer comprises detecting head and energy source, described detecting head one end is connected with described energy source, the other end is through the front end that is positioned at described head body after the sidewall of described head body.
Further, in the sidewall of described head body, offer cavity, described energy source is arranged in described cavity.
Further, described cavity connects the sidewall rear end face of described head body, and the rear end of described cavity seals by dismountable sealing ring.
Further, described cavity connects the sidewall external surface of described head body, and the external surface of described cavity seals by dismountable sealing ring.
Further, in described head body, be provided with preformed channel, described preformed channel is positioned at the centre position of the sidewall wall thickness of described head body, and described preformed channel one end is communicated with described cavity, the other end is positioned at the front end of described head body, and described detecting head is arranged in described preformed channel.
Further, the front end face of described spy side head and the outer surface of described head body be in same plane, and by mechanical seal structure, seal between the outer face of described preformed channel and the front end face of described spy side head.
Further, the front end of described head body is arc-shaped structure.
Further, the diameter of described gas outlet is less than the diameter of described gas channel.
Further, the sidewall front end of described head body offers side direction venthole near the position of described detecting head.
Further, described detecting head is a plurality of, and is distributed in symmetrically and evenly the sidewall one week of described head body.
Further, described detecting head comprises high temperature resistant camera head, infrared temperature measurement apparatus and thermocouple.
Further, described detecting head comprises at least one group of high temperature resistant camera head, at least one group of infrared temperature measurement apparatus and a thermocouple, described in every group, high temperature resistant camera head comprises two and be symmetrical arranged with respect to the axle center of head body, described in every group, infrared temperature measurement apparatus comprises two and be symmetrical arranged with respect to the axle center of head body, and a described thermocouple is arranged in the middle of adjacent high temperature resistant camera head and infrared temperature measurement apparatus.
Retrusive gas injection shower nozzle for the underground coal gasification(UCG) that the utility model embodiment provides, comprise head body, owing to being provided with gas channel in head body, the front end of head body is provided with gas outlet, meanwhile, gas channel is communicated with gas outlet, and gasifying agent can be along gas channel, from gas outlet ejection, and then gasifying agent is sprayed onto on gasification coal seam, in sidewall due to head body, be provided with sniffer, and sniffer comprises detecting head and energy source, energy source is that the energy of normal operation is provided for detecting head, detecting head can be monitored in real time to its situation around, one end of detecting head is connected with energy source, the other end is through the front end that is positioned at head body after the sidewall of head body, detecting head can be monitored near the real-time condition of front end of head body, thus, gas injection shower nozzle to the process of gasification coal seam gas injection agent in, by the detecting head in head body, the situation of the operating condition of gasification furnace burning face and cavity-growth is monitored, thereby realized the real-time monitoring to gasification furnace burning face, and then make the adjusting on ground can be promptly and accurately.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of retrusive gas injection shower nozzle for the utility model embodiment underground coal gasification(UCG);
Fig. 2 is that the utility model embodiment underground coal gasification(UCG) is provided with the structural representation of side direction venthole with retrusive gas injection shower nozzle;
Fig. 3 is that the utility model embodiment underground coal gasification(UCG) is arranged on the structural representation of the sidewall external surface of head body with the cavity of retrusive gas injection shower nozzle;
Fig. 4 is the distribution schematic diagram of camera, infrared temperature measurement apparatus and thermocouple on retrusive gas injection shower nozzle for the utility model embodiment underground coal gasification(UCG);
Wherein: 1-head body, 2-sniffer, 3-sealing ring, the external pipeline of 4-, 5-wire, 11-gas channel, 12-gas outlet, 13-cavity, 14-preformed channel, 15-side direction venthole, 21-detecting head, 22-energy source, 211-camera, 212-infrared temperature measurement apparatus, 213-thermocouple.
The specific embodiment
Below in conjunction with accompanying drawing, a kind of underground coal gasification(UCG) of the utility model embodiment is described in detail with retrusive gas injection shower nozzle.
In description of the present utility model, it will be appreciated that, term " " center ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of indications such as " outward " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, rather than device or the element of indication or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as restriction of the present utility model.
Fig. 1 is a specific embodiment of retrusive gas injection shower nozzle for the utility model embodiment underground coal gasification(UCG), in Fig. 1, retrusive gas injection shower nozzle for embodiment underground coal gasification(UCG) of the present utility model, comprise head body 1, in head body 1, be provided with gas channel 11, the front end of head body 1 offers gas outlet 12, and gas channel 11 is communicated with gas outlet 12, simultaneously, in the sidewall of head body 1, be provided with sniffer 2, sniffer 2 comprises detecting head 21 and energy source 22, detecting head 21 one end are connected with energy source 22, the other end is through the front end that is positioned at head body 1 after the sidewall of head body 1.
Retrusive gas injection shower nozzle for the underground coal gasification(UCG) that the utility model embodiment provides, comprise head body 1, owing to being provided with gas channel 11 in head body 1, the front end of head body 1 is provided with gas outlet 12, meanwhile, gas channel 11 is communicated with gas outlet 12, and gasifying agent can be along gas channel 11,12 ejections from gas outlet, and then gasifying agent is sprayed onto on gasification coal seam, in sidewall due to head body 1, be provided with sniffer 2, and sniffer 2 comprises detecting head 21 and energy source 22, energy source 22 is that the energy of normal operation is provided for detecting head 21, detecting head 21 can be monitored in real time to its situation around, one end of detecting head 21 is connected with energy source 22, the other end is through the front end that is positioned at head body 1 after the sidewall of head body 1, detecting head 21 can be monitored near the real-time condition of front end of head body 1, thus, gas injection shower nozzle to the process of gasification coal seam gas injection agent in, by the operating condition of the 21 pairs of gasification furnace burning faces of detecting head in head body 1 and the height of combustion dead zone, the situation monitoring such as width, thereby realized the real-time monitoring to gasification furnace burning face, and then make the adjusting on ground can be promptly and accurately.
Energy source 22 is for providing the energy of normal operation to detecting head 21, in order to save space, cavity 13 is preferably set in the sidewall of head body 1, and energy source 22 is arranged in cavity 13, thus, saved space, if energy source 22 comes from ground, in cavity 13, can carry software or conversion system, be fully used in space.
See figures.1.and.2, cavity 13 can connect the sidewall rear end face of head body 1, and the rear end of cavity 13 seals by dismountable sealing ring 3, make the sidewall of head body 1 not be vulnerable to extraneous extruding and be out of shape, and outward appearance better appearance, simultaneously, equipment is arranged at after cavity 13, by dismountable sealing ring 3, carry out sealed cavity 13, prevented the damage of cavity 13 interior equipment, protected the equipment in cavity 13; In addition, dismountable sealing ring 3 can be installed because screw thread screw thread is convenient by various ways sealed cavities 13 such as screw thread screw threads, and therefore, preferred dismountable sealing ring 3 is by screw thread engage thread sealed cavity 13.
With reference to Fig. 3; in order to make the equipment in cavity 13, be convenient to lay and change; cavity 13 also can connect the sidewall external surface of head body 1; and the external surface of cavity 13 seals by dismountable sealing ring 3; the sidewall external surface in head body 1 sets after cavity 13; equipment can directly be laid and change at cavity 13 places; and then seal by dismountable sealing ring 3; thus; make the equipment in cavity 13 be convenient to lay and change; meanwhile, dismountable sealing ring 3 has been protected the equipment in cavity 13.
For sniffer 2 being arranged in the sidewall of head body 1, and one end of detecting head 21 is positioned at the front end of head body 1, the other end is connected with the energy source 22 in cavity 13, preferably in the interior preformed channel 14 that arranges of head body 1, and preformed channel 14 is positioned at the centre position of the sidewall wall thickness of head body 1, saved space, and pressure and the damage of the pressure outside head body 1 to head body 1 in head body 1 have been prevented, simultaneously, one end of preformed channel 14 is positioned at the front end of head body 1, the other end is communicated with cavity 13, detecting head 21 is arranged in preformed channel 14, thus, sniffer 2 is arranged in the sidewall of head body 1, simultaneously, one end of detecting head 21 is through the front end that is positioned at head body 1 after preformed channel 14, the other end is connected with the energy source 22 in cavity 13 through preformed channel 14 is rear.
Visit the front end face of side 21 and the external surface of head body 1 can be in same plane or Different Plane, if visit the front end face of side 21 higher than the external surface of head body 1, in the process moving in head body 1, the damage that easily rubs of the front end face of detecting head 21, in order to prevent making detecting head 21 friction damages because front and back drag head body 1, preferably visit the front end face of side 21 and the outer surface of head body 1 in same plane, and the outer face of preformed channel 14 and visiting between the front end face of side 21 seals by mechanical seal structure, in the process of gas injection, the front end face of visiting side 21 can be by friction damage, and mechanical seal structure makes between preformed channel 14 and detecting head 21 without relatively moving, thus, prevented due to front and back drag head body 1 rub damage detecting head 21, and then protected detecting head 21.
The front end of head body 1 can adopt the various structures such as arc line shaped, linear, if employing rectilinear structure, when head body 1 moves forward and backward in passage, partial impairment thing can produce resistance to head body 1, be unfavorable for that head body 1 moves in passage, in order to eliminate the resistance of partial impairment thing to head body 1, with reference to Fig. 1, Fig. 2 or Fig. 3, the front end of preferred sprinkler body 1 adopts the throat structure of arc line shaped, thus, eliminated the resistance of partial impairment thing to head body 1, be beneficial to head body 1 and move forward and backward in passage.In addition, detecting head 21 is arranged on the sidewall camber line of head body 1, can reduce contacting of detecting head 21 and obstruction, has prevented that detecting head 21 from being rubbed by obstruction and destroying; Meanwhile, in order to make the accurate of survey data, preferably detecting head 21 is embedded in to the centre position of the front end camber line of head body 1.
For gasifying agent being ejected on gasification coal seam, the diameter of gas outlet 12 can be less than or equal to the diameter of gas channel 11, if the diameter of gas outlet 12 is less than the diameter of gas channel 11, the injection intensity of gasifying agent is larger, simultaneously, gasifying agent can be ejected on gasification coal seam at an angle, can realize purposive injection, therefore, the diameter that optimizes gas port 12 is less than the diameter of gas channel 11, thus, the injection that gasifying agent can be purposive at an angle, and injection intensity is larger.On the other hand, the internal diameter of head body 1 is identical with the external diameter of external pipeline 4, and meanwhile, the thick wall thickness that should be greater than external pipeline 4 of thin-walled of head body 1, to guarantee that external pipeline 4 can be connected in head body 1; In addition, between head body 1 and external pipeline 4, can adopt the mode of welding or screw thread to be connected, to be formed for the passage of conveying gas agent.
In the process moving in head body 1, detecting head 21 is easily blocked and can not monitor in real time gasification furnace burning face by obstruction, therefore, preferably at the sidewall front end of head body 1, near the position of detecting head 21, side direction venthole 15 is set, as shown in Figure 2, thus, can near obstruction detecting head 21 be eliminated by the air-flow of side direction venthole 15, meanwhile, 15 pairs of detecting heads 21 of side direction venthole can play the effect of cooling down, have increased the application life of detecting head 21.
Detecting head 21 can be single, also can be a plurality of, for fear of obstruction, on surveying the impact of accuracy, preferably detecting head 21 is a plurality of, and is distributed in symmetrically and evenly the sidewall one week of head body 1, thus, a plurality of detecting heads 21 can be surveyed simultaneously, have avoided one-sided detecting head 21 to be blocked by obstruction and impact surveying accuracy, simultaneously, avoided affecting result of detection due to the damage of one-sided detecting head 21, thereby increased detection accuracy.
Detecting head 21 can comprise high temperature resistant camera head 211, infrared temperature measurement apparatus 212 and thermocouple 213, because high temperature resistant camera head 211 can be monitored the work plane that gasification furnace burns in real time, and resistant to elevated temperatures camera 211 can stand to fire the high temperature of dead zone and not be destroyed, infrared temperature measurement apparatus 212 is detectable goes out distant temperature, simultaneously, due near the detectable temperature it of thermocouple 213, therefore, preferably detecting head 21 comprises high temperature resistant camera head 211, infrared temperature measurement apparatus 212 and thermocouple 213, thus, gas injection shower nozzle to the process of gasification coal seam gas injection agent in, by high temperature resistant camera head 211, reflect the real operating condition of gasification furnace burning face and cavity-growth situation, meanwhile, by the detectable temperature that goes out distant combustion dead zone of infrared temperature measurement apparatus 212, reflected really the temperature of flame range, in addition, by near the detectable temperature going out head body 1 of thermocouple 213, thereby guaranteed that head body 1 do not destroyed by high temperature.
In order to prevent occurring measured deviation because of the existence of obstruction, therefore, preferred a plurality of detecting head 21 comprises at least one group of high temperature resistant camera head 211, at least one group of infrared temperature measurement apparatus 212 and a thermocouple 213, simultaneously, every group of high temperature resistant camera head 211 and every group of infrared temperature measurement apparatus 212 include two and symmetrical with respect to the axle center of head body 1, a thermocouple 213 is arranged in the middle of adjacent high temperature resistant camera head 211 and infrared temperature measurement apparatus 212, with reference to Fig. 4, Fig. 4 is one group of high temperature resistant camera head 211 and one group of infrared temperature measurement apparatus 212, simultaneously, one group of high temperature resistant camera head 211 and one group of infrared temperature measurement apparatus 212 include two and symmetrical with respect to the axle center of head body 1, a thermocouple 213 is arranged in the middle of adjacent high temperature resistant camera head 211 and infrared temperature measurement apparatus 212, thus, if being covered or damage by obstruction, one of them the high temperature resistant camera head 211 in a group or infrared temperature measurement apparatus 212 affected detection, can survey by the high temperature resistant camera head 211 symmetrical with it or infrared temperature measurement apparatus 212, prevented from causing measurement to occur deviation because of the existence of obstruction, meanwhile, two symmetrical high temperature resistant camera heads 211 and two symmetrical infrared temperature measurement apparatus 212 are surveyed simultaneously, have increased the degree of accuracy of surveying, because thermocouple 213 can be measured near temperature head body 1, thereby prevented that high temperature camera 211 in head body 1 and head body 1 and infrared temperature measurement apparatus 212 are because high temperature destroys.In addition, after all sniffers 2 have connected, wire 5 is drawn ground from head body 1 inner side along external pipeline 4, to be connected in ground equipment, and wire 5 employing metal shell protections, the inner insulation materials that adds, to prevent that high temperature from destroying wire 5.
In the description of this manual, specific features, structure, material or feature can be with suitable mode combinations in any one or more embodiment or example.
The above; it is only the specific embodiment of the present utility model; but protection domain of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; can expect easily changing or replacing, within all should being encompassed in protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of described claim.
Claims (12)
1. retrusive gas injection shower nozzle for a underground coal gasification(UCG), comprise head body, in described head body, be provided with gas channel, the front end of described head body offers gas outlet, and described gas channel is communicated with described gas outlet, it is characterized in that, in the sidewall of described head body, be provided with sniffer, described sniffer comprises detecting head and energy source, and described detecting head one end is connected with described energy source, and the other end is through the front end that is positioned at described head body after the sidewall of described head body.
2. retrusive gas injection shower nozzle for underground coal gasification(UCG) according to claim 1, is characterized in that, in the sidewall of described head body, offer cavity, described energy source is arranged in described cavity.
3. retrusive gas injection shower nozzle for underground coal gasification(UCG) according to claim 2, is characterized in that, described cavity connects the sidewall rear end face of described head body, and the rear end of described cavity seals by dismountable sealing ring.
4. retrusive gas injection shower nozzle for underground coal gasification(UCG) according to claim 2, is characterized in that, described cavity connects the sidewall external surface of described head body, and the external surface of described cavity seals by dismountable sealing ring.
5. retrusive gas injection shower nozzle for underground coal gasification(UCG) according to claim 2, it is characterized in that, in described head body, be provided with preformed channel, described preformed channel is positioned at the centre position of the sidewall wall thickness of described head body, described preformed channel one end is communicated with described cavity, the other end is positioned at the front end of described head body, and described detecting head is arranged in described preformed channel.
6. retrusive gas injection shower nozzle for underground coal gasification(UCG) according to claim 5, it is characterized in that, the front end face of described spy side head and the outer surface of described head body be in same plane, and by mechanical seal structure, seal between the outer face of described preformed channel and the front end face of described spy side head.
7. retrusive gas injection shower nozzle for underground coal gasification(UCG) according to claim 1, is characterized in that, the front end of described head body is arc-shaped structure.
8. retrusive gas injection shower nozzle for underground coal gasification(UCG) according to claim 1, is characterized in that, the diameter of described gas outlet is less than the diameter of described gas channel.
9. retrusive gas injection shower nozzle for underground coal gasification(UCG) according to claim 1, is characterized in that, the sidewall front end of described head body offers side direction venthole near the position of described detecting head.
10. retrusive gas injection shower nozzle for underground coal gasification(UCG) according to claim 1, is characterized in that, described detecting head is a plurality of, and is distributed in symmetrically and evenly the sidewall one week of described head body.
Retrusive gas injection shower nozzle for 11. underground coal gasification(UCG)s according to claim 10, is characterized in that, described detecting head comprises high temperature resistant camera head, infrared temperature measurement apparatus and thermocouple.
Retrusive gas injection shower nozzle for 12. underground coal gasification(UCG)s according to claim 11, it is characterized in that, described detecting head comprises at least one group of high temperature resistant camera head, at least one group of infrared temperature measurement apparatus and a thermocouple, described in every group, high temperature resistant camera head comprises two and be symmetrical arranged with respect to the axle center of head body, described in every group, infrared temperature measurement apparatus comprises two and be symmetrical arranged with respect to the axle center of head body, and a described thermocouple is arranged in the middle of adjacent high temperature resistant camera head and infrared temperature measurement apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420339791.6U CN203905923U (en) | 2014-06-23 | 2014-06-23 | Retreating type gas injection spray nozzle for underground coal gasification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420339791.6U CN203905923U (en) | 2014-06-23 | 2014-06-23 | Retreating type gas injection spray nozzle for underground coal gasification |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203905923U true CN203905923U (en) | 2014-10-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420339791.6U Expired - Lifetime CN203905923U (en) | 2014-06-23 | 2014-06-23 | Retreating type gas injection spray nozzle for underground coal gasification |
Country Status (1)
| Country | Link |
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| CN (1) | CN203905923U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533377A (en) * | 2014-11-06 | 2015-04-22 | 新奥气化采煤有限公司 | Nozzle and gasification method thereof |
| CN104632180A (en) * | 2015-02-03 | 2015-05-20 | 新奥气化采煤有限公司 | Nozzle |
| CN104632181A (en) * | 2015-02-03 | 2015-05-20 | 新奥气化采煤有限公司 | Nozzle |
-
2014
- 2014-06-23 CN CN201420339791.6U patent/CN203905923U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533377A (en) * | 2014-11-06 | 2015-04-22 | 新奥气化采煤有限公司 | Nozzle and gasification method thereof |
| CN104632180A (en) * | 2015-02-03 | 2015-05-20 | 新奥气化采煤有限公司 | Nozzle |
| CN104632181A (en) * | 2015-02-03 | 2015-05-20 | 新奥气化采煤有限公司 | Nozzle |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170209 Address after: 065001 Hebei economic and Technological Development Zone, Langfang science and Technology Park in the Southern District of B building, room 522 Patentee after: ENN SCIENCE & TECHNOLOGY DEVELOPMENT Co.,Ltd. Address before: The 065001 Hebei economic and Technological Development Zone of Langfang Huaxiang new Austrian Science and Technology Park in the Southern District B building room 522 Patentee before: ENN COAL GASIFICATION MINING Co.,Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20141029 |
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| CX01 | Expiry of patent term |