CN103163160B - High-frequency electromagnetic wave safety performance test equipment - Google Patents
High-frequency electromagnetic wave safety performance test equipment Download PDFInfo
- Publication number
- CN103163160B CN103163160B CN201310041251.XA CN201310041251A CN103163160B CN 103163160 B CN103163160 B CN 103163160B CN 201310041251 A CN201310041251 A CN 201310041251A CN 103163160 B CN103163160 B CN 103163160B
- Authority
- CN
- China
- Prior art keywords
- frequency electromagnetic
- electromagnetic wave
- pole
- cadmium
- spark
- 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
- 238000011056 performance test Methods 0.000 title abstract 2
- 238000012360 testing method Methods 0.000 claims abstract description 67
- 229910052793 cadmium Inorganic materials 0.000 claims abstract description 36
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 claims abstract description 27
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 11
- 239000010937 tungsten Substances 0.000 claims abstract description 11
- 150000001661 cadmium Chemical class 0.000 claims description 9
- 238000005086 pumping Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 abstract description 22
- 230000008569 process Effects 0.000 abstract description 21
- 239000003245 coal Substances 0.000 abstract description 9
- 239000007789 gas Substances 0.000 description 41
- 230000008901 benefit Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Landscapes
- Geophysics And Detection Of Objects (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The invention provides high-frequency electromagnetic wave safety performance test equipment, and belongs to the field of test equipment. The device comprises a high-frequency electromagnetic wave emitter, a spark test device and a motor, wherein a pole holder and a cadmium disc are arranged in the spark test device, and a tungsten filament is arranged on the lower side of the pole holder; the high-frequency electromagnetic wave emitter is respectively connected with the pole holder and the cadmium disc and is used for providing high-frequency electromagnetic waves for the pole holder and the cadmium disc; the motor is respectively connected with the pole holder and the cadmium disc and is used for driving the pole holder and the cadmium disc to rotate during test, so that the tungsten filament on the lower side of the pole holder is in contact with the cadmium disc. In the test process, when the tungsten wire on the lower side of the electrode holder is in contact with the cadmium disc, if the high-frequency electromagnetic wave provided by the high-frequency electromagnetic wave emitter is high enough, combustible gas in the spark test device can be ignited, so that the extreme value range of the high-frequency electromagnetic wave of the combustible gas with known content can be determined, and high-frequency electromagnetic wave equipment which can be safely used under a corresponding coal mine can be determined.
Description
Technical field
The present invention relates to a kind of security performance experimental facilities, particularly relate to frequency electromagnetic waves safety feature test equipment.
Background technology
Under the promotion of development in science and technology, be similar to ground penetrating radar, cheat instrument, the frequency electromagnetic waves equipment such as Wireless Telecom Equipment, electrical prospecting apparatus and hand-held set is widely used in coal mining process, they have played immeasurable effect in the process ensureing Safety of Coal Mine Production.
But because underground coal mine exists a large amount of inflammable gas usually, if inflammable gas too high levels, then high-frequency electromagnetic wave device is in use easily blasted phenomenon.Therefore, in order to ensure the security of frequency electromagnetic waves equipment use, being necessary for different coal mine, determining its frequency electromagnetic waves extreme value scope.At present, not yet there is the research to this aspect.
Summary of the invention
The present invention is intended to solve the technical matters existed in prior art, innovatively propose a kind of frequency electromagnetic waves safety feature test equipment especially, the frequency electromagnetic waves extreme value scope of the inflammable gas of known content can be determined, thus the high-frequency electromagnetic wave device that can use at corresponding coal mine downhole safety can be determined.
In order to realize above-mentioned purpose of the present invention, the invention provides a kind of frequency electromagnetic waves safety feature test equipment, it is characterized in that: comprise high-frequency electromagnetic wave launcher (1), spark test apparatus (2) and motor (3), be provided with pole in wherein said spark test apparatus (2) and hold (2-1) and cadmium dish (2-2), and the downside that (2-1) is held in described pole is provided with tungsten filament (2-3); Described high-frequency electromagnetic wave launcher (1) connects this pole respectively and holds (2-1) and cadmium dish (2-2), for holding (2-1) to this pole and cadmium dish (2-2) provides frequency electromagnetic waves; Described motor (3) connects this pole respectively and holds (2-1) and cadmium dish (2-2), for driving this pole to hold (2-1) and cadmium dish (2-2) rotation at the trial, the tungsten filament (2-3) making this pole hold (2-1) downside contacts with this cadmium dish (2-2).
In process of the test, when the tungsten filament that downside is held in this pole contacts with this cadmium dish, if the frequency electromagnetic waves that high-frequency electromagnetic wave launcher provides is enough high, the inflammable gas in spark test apparatus can be ignited, the frequency electromagnetic waves extreme value scope of the inflammable gas of known content can be determined thus, thus the high-frequency electromagnetic wave device that can use at corresponding coal mine downhole safety can be determined.
This frequency electromagnetic waves safety feature test equipment also comprises Calibration Circuit (4), and the output terminal of described high-frequency electromagnetic wave launcher (1) connects this pole respectively by this Calibration Circuit (4) and holds (2-1) and cadmium dish (2-2).
This frequency electromagnetic waves safety feature test equipment also comprises polarity reversing switch (W), and described high-frequency electromagnetic wave launcher (1) selects double frequency electromagnetic wave transmitter, described Calibration Circuit (4) is made up of power supply (U), multiple circuit branch in parallel and an inductance (L), and wherein each circuit branch is in series by a resistance (R) and a switch (S); First output terminal of described double frequency electromagnetic wave transmitter (1) connects the negative pole of this power supply (U) by this polarity reversing switch (W), the positive pole of this power supply (U) connects the first sys node of the plurality of circuit branch, and the second sys node of described multiple circuit branch connects the first end of this inductance (L), second end of this inductance (L) connects this pole and holds (2-1); Second output terminal of described double frequency electromagnetic wave transmitter (1) connects second end of this inductance (L) by this polarity reversing switch (W); First output terminal of described double frequency electromagnetic wave transmitter (1) connects this cadmium dish (2-2) by this polarity reversing switch (W).
In process of the test, adopt double frequency electromagnetic wave transmitter can determine the frequency electromagnetic waves extreme value scope of the inflammable gas of known content further rapidly; And adopt Calibration Circuit, adjusted by the opening and closing controlling its circuit branch breaker in middle and be supplied to pole and hold and the frequency electromagnetic waves size on cadmium dish, more accurately can determine the frequency electromagnetic waves extreme value scope of the inflammable gas of known content further.
This frequency electromagnetic waves safety feature test equipment also comprises air intake opening (5), gas admittance valve (6), pressure relief opening (7), blowdown valve (8) and spark arrester (9), wherein said air intake opening (5) is communicated with this spark test apparatus (2) inside, for inputting inflammable gas to this spark test apparatus (2) by this gas admittance valve (6), spark arrester (9) successively; Described pressure relief opening (7) is communicated with this spark test apparatus (2) inside, for being discharged by the gas in this spark test apparatus (2) by this blowdown valve (8), spark arrester (9) successively.
This frequency electromagnetic waves safety feature test equipment also comprises the pressure transducer (10) be arranged on this spark test apparatus (2), and described pressure transducer (10) is for detecting the pressure of this spark test apparatus (2) interior gas.
In process of the test, operating personnel according to the force value on pressure transducer, can control the input quantity of inflammable gas by adjustment gas admittance valve or blowdown valve.
This frequency electromagnetic waves safety feature test equipment also comprises vacuum pump (11) and vacuum pumping valve (12), and wherein said vacuum pump (11) is communicated with this spark test apparatus (2) inside by this vacuum pumping valve (12).Before on-test, process is vacuumized to spark test apparatus, accurately can determine the frequency electromagnetic waves extreme value scope of the inflammable gas of known content thus further; And in process of the test, can abort more easily, inflammable gas need not be waited all to have burnt, thus the process making the frequency electromagnetic waves extreme value scope of the inflammable gas determining known content more fast, safety.
In sum, owing to have employed technique scheme, the invention has the beneficial effects as follows:
1, in process of the test, when the tungsten filament that downside is held in this pole contacts with this cadmium dish, if the frequency electromagnetic waves that high-frequency electromagnetic wave launcher provides is enough high, the inflammable gas in spark test apparatus can be ignited, the frequency electromagnetic waves extreme value scope of the inflammable gas of known content can be determined thus, thus the high-frequency electromagnetic wave device that can use at corresponding coal mine downhole safety can be determined;
2, in process of the test, double frequency electromagnetic wave transmitter is adopted can to determine the frequency electromagnetic waves extreme value scope of the inflammable gas of known content further rapidly; And adopt Calibration Circuit, adjusted by the opening and closing controlling its circuit branch breaker in middle and be supplied to pole and hold and the frequency electromagnetic waves size on cadmium dish, more accurately can determine the frequency electromagnetic waves extreme value scope of the inflammable gas of known content further;
3, in process of the test, operating personnel according to the force value on pressure transducer, can control the input quantity of inflammable gas by adjustment gas admittance valve or blowdown valve;
4, before on-test, process is vacuumized to spark test apparatus, accurately can determine the frequency electromagnetic waves extreme value scope of the inflammable gas of known content thus further; And in process of the test, can abort more easily, inflammable gas need not be waited all to have burnt, thus the process making the frequency electromagnetic waves extreme value scope of the inflammable gas determining known content more fast, safety.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the circuit diagram of the first embodiment of the present invention.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
In describing the invention, unless otherwise specified and limit, it should be noted that, term " installation ", " being connected ", " connection " should be interpreted broadly, such as, can be mechanical connection or electrical connection, also can be the connection of two element internals, can be directly be connected, also indirectly can be connected by intermediary, for the ordinary skill in the art, the concrete meaning of above-mentioned term can be understood as the case may be.
As shown in Figure 1, this frequency electromagnetic waves safety feature test equipment comprises high-frequency electromagnetic wave launcher 1, spark test apparatus 2, motor 3, Calibration Circuit 4, air intake opening 5, gas admittance valve 6, pressure relief opening 7, blowdown valve 8, spark arrester 9, pressure transducer 10, vacuum pump 11 and vacuum pumping valve 12, wherein this air intake opening 5 is successively by this gas admittance valve 6, spark arrester 9 is communicated with this spark test apparatus 2 inside, for inputting the inflammable gas of such as hydrogen etc. to this spark experimental provision 2, and this pressure relief opening 7 is successively by this blowdown valve 8, spark arrester 9 is communicated with this spark test apparatus 2 inside, for the gas in this spark test apparatus 2 is discharged.This pressure transducer 10 is arranged on this spark test apparatus 2, for detecting the pressure of this spark test apparatus 2 internal gas.In process of the test, operating personnel according to the force value on pressure transducer 10, can control the input quantity of inflammable gas by adjustment gas admittance valve 6 or blowdown valve 8.
Be provided with pole in this spark test apparatus 2 and hold 2-1 and cadmium dish 2-2, and the downside that 2-1 is held in this pole is provided with tungsten filament 2-3.The output terminal of this high-frequency electromagnetic wave launcher 1 connects this pole respectively by this Calibration Circuit 4 and holds 2-1 and cadmium dish 2-2, for holding 2-1 to this pole and cadmium dish 2-2 provides frequency electromagnetic waves, and this motor 3 connects this pole respectively to be held and cadmium dish, hold 2-1 and cadmium dish 2-2 for driving this pole at the trial to rotate, the tungsten filament 2-3 that this pole is held on the downside of 2-1 contacts with this cadmium dish 2-2.In process of the test, when this pole tungsten filament 2-3 held on the downside of 2-1 contacts with this cadmium dish 2-2, if the frequency electromagnetic waves that high-frequency electromagnetic wave launcher 1 provides is enough high, the inflammable gas in spark test apparatus 2 can be ignited, the frequency electromagnetic waves extreme value scope of the inflammable gas of known content can be determined thus, thus the high-frequency electromagnetic wave device that can use at this coal mine downhole safety can be determined.
In addition, this vacuum pump 11 is communicated with spark test apparatus 2 inside by vacuum pumping valve 12.Before on-test, process is vacuumized to spark test apparatus 2, accurately can determine the frequency electromagnetic waves extreme value scope of the inflammable gas of known content thus further; And in process of the test, can abort more easily, inflammable gas need not be waited all to have burnt, thus the process making the frequency electromagnetic waves extreme value scope of the inflammable gas determining known content more fast, safety.
In the first embodiment of the present invention, this high-frequency electromagnetic wave launcher 1 selects double frequency electromagnetic wave transmitter, and this Calibration Circuit 4 is made up of power supply U, multiple circuit branch in parallel and an inductance L, wherein each circuit branch is in series by a resistance R and switch S.First output terminal of double frequency electromagnetic wave transmitter connects the negative pole of power supply U by polarity reversing switch W, the positive pole of this power supply U connects the first sys node of the plurality of circuit branch, and the second sys node of the plurality of circuit branch connects the first end of inductance L, the second end of this inductance L connects this pole and holds 2-1.Second output terminal of double frequency electromagnetic wave transmitter 1 connects the second end of inductance L by polarity reversing switch W, the first output terminal of double frequency electromagnetic wave transmitter 1 connects this cadmium dish 2-2 by polarity reversing switch W.In process of the test, adopt double frequency electromagnetic wave transmitter can determine the frequency electromagnetic waves extreme value scope of the inflammable gas of known content further rapidly, and adopt Calibration Circuit, adjusted by the opening and closing of control circuit branch road breaker in middle and be supplied to pole and hold frequency electromagnetic waves size on 2-1 and cadmium dish 2-2, more accurately can determine the frequency electromagnetic waves extreme value scope of the inflammable gas of known content further.
In addition, handheld launch controller is adopted to carry out this high-frequency electromagnetic wave launcher of Long-distance Control in the present invention, the emissive power of such as this high-frequency electromagnetic wave launcher of remotely changing and transmission frequency etc.; Adopt digital control instrument, the switch of circuit branch in Calibration Circuit 4, motor 3, gas admittance valve 6, blowdown valve 8, vacuum pump 11 and vacuum pumping valve 12 are controlled, and show the pressure information that pressure transducer 10 detects, operating personnel can carry out remote trial in safe distance scope thus.In the first embodiment of the present invention, the model of this handheld launch controller is IE-1 type, and the model of this double frequency electromagnetic wave transmitter is IF-1 type.
In the description of this instructions, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present invention and aim, scope of the present invention is by claim and equivalents thereof.
Claims (4)
1. a frequency electromagnetic waves safety feature test equipment, it is characterized in that: comprise high-frequency electromagnetic wave launcher (1), spark test apparatus (2) and motor (3), be provided with pole in wherein said spark test apparatus (2) and hold (2-1) and cadmium dish (2-2), and the downside that (2-1) is held in described pole is provided with tungsten filament (2-3);
Described high-frequency electromagnetic wave launcher (1) connects this pole respectively and holds (2-1) and cadmium dish (2-2), for holding (2-1) to this pole and cadmium dish (2-2) provides frequency electromagnetic waves;
Described motor (3) connects this pole respectively and holds (2-1) and cadmium dish (2-2), for driving this pole to hold (2-1) and cadmium dish (2-2) rotation at the trial, the tungsten filament (2-3) making this pole hold (2-1) downside contacts with this cadmium dish (2-2);
Also comprise Calibration Circuit (4), the output terminal of described high-frequency electromagnetic wave launcher (1) connects this pole respectively by this Calibration Circuit (4) and holds (2-1) and cadmium dish (2-2);
Also comprise polarity reversing switch (W), and described high-frequency electromagnetic wave launcher (1) selects double frequency electromagnetic wave transmitter, described Calibration Circuit (4) is made up of power supply (U), multiple circuit branch in parallel and an inductance (L), and wherein each circuit branch is in series by a resistance (R) and a switch (S);
First output terminal of described double frequency electromagnetic wave transmitter (1) connects the negative pole of this power supply (U) by this polarity reversing switch (W), the positive pole of this power supply (U) connects the first sys node of the plurality of circuit branch, and the second sys node of described multiple circuit branch connects the first end of this inductance (L), second end of this inductance (L) connects this pole and holds (2-1);
Second output terminal of described double frequency electromagnetic wave transmitter (1) connects second end of this inductance (L) by this polarity reversing switch (W);
First output terminal of described double frequency electromagnetic wave transmitter (1) connects this cadmium dish (2-2) by this polarity reversing switch (W).
2. frequency electromagnetic waves safety feature test equipment according to claim 1, it is characterized in that: also comprise air intake opening (5), gas admittance valve (6), pressure relief opening (7), blowdown valve (8) and spark arrester (9), wherein said air intake opening (5) is communicated with this spark test apparatus (2) inside, for inputting inflammable gas to this spark test apparatus (2) by this gas admittance valve (6), spark arrester (9) successively;
Described pressure relief opening (7) is communicated with this spark test apparatus (2) inside, for being discharged by the gas in this spark test apparatus (2) by this blowdown valve (8), spark arrester (9) successively.
3. frequency electromagnetic waves safety feature test equipment according to claim 2, it is characterized in that: also comprise the pressure transducer (10) be arranged on this spark test apparatus (2), described pressure transducer (10) is for detecting the pressure of this spark test apparatus (2) interior gas.
4. frequency electromagnetic waves safety feature test equipment according to claim 3, it is characterized in that: also comprise vacuum pump (11) and vacuum pumping valve (12), wherein said vacuum pump (11) is communicated with this spark test apparatus (2) inside by this vacuum pumping valve (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310041251.XA CN103163160B (en) | 2013-02-04 | 2013-02-04 | High-frequency electromagnetic wave safety performance test equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310041251.XA CN103163160B (en) | 2013-02-04 | 2013-02-04 | High-frequency electromagnetic wave safety performance test equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103163160A CN103163160A (en) | 2013-06-19 |
| CN103163160B true CN103163160B (en) | 2015-08-12 |
Family
ID=48586423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310041251.XA Active CN103163160B (en) | 2013-02-04 | 2013-02-04 | High-frequency electromagnetic wave safety performance test equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103163160B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104730382B (en) * | 2015-03-04 | 2018-05-29 | 广州特种机电设备检测研究院 | For detecting the device and method of the explosion-proof performance of electromagnetic radiation class electrical equipment |
| CN107367646B (en) * | 2017-06-19 | 2020-02-28 | 北方工业大学 | Intrinsically safe circuit spark test device and speed regulation method |
| CN112269111B (en) * | 2020-12-10 | 2021-04-02 | 矿冶科技集团有限公司 | Electric spark simulation system and method and electronic device |
| CN115880866B (en) * | 2023-03-03 | 2023-05-16 | 安标国家矿用产品安全标志中心有限公司 | Electromagnetic energy explosion-proof test linear module and method |
| CN115862274B (en) * | 2023-03-03 | 2023-05-16 | 安标国家矿用产品安全标志中心有限公司 | Multi-band radio frequency electromagnetic energy explosion-proof ignition test device and method |
-
2013
- 2013-02-04 CN CN201310041251.XA patent/CN103163160B/en active Active
Non-Patent Citations (2)
| Title |
|---|
| 基于单片机控制实现的本质安全电路用火花试验装置;张军国等;《煤矿机电》;20040108(第2期);图1，第29页左栏第1，3段 * |
| 电磁波功率与煤矿瓦斯***的关系探讨;柳玉磊;《中国优秀硕士学位论文全文数据库》;20100115;第47页第5.1.1-5.1.2节，图5-1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103163160A (en) | 2013-06-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103163160B (en) | High-frequency electromagnetic wave safety performance test equipment | |
| CN105460238A (en) | Spacecraft surface potential active control system | |
| CN205103947U (en) | Status indicator lamp control circuit | |
| CN104504891B (en) | Remote control circuit and remote control | |
| CN206277968U (en) | A kind of electric automobile wireless charging multi-level racks with repeating coil | |
| CN101975884B (en) | High-voltage potential indicator | |
| CN108317922B (en) | Graded perforation exploder circuit based on cable coding and control method | |
| CN104218624B (en) | Lithium battery charging circuit and light fixture | |
| CN102313498A (en) | Wireless remote multi-channel remotely-controlled detonating device | |
| CN203407030U (en) | Double-ring fire electromagnetic heating apparatus and circuit thereof | |
| CN204536266U (en) | electric spark leak detector | |
| CN105203808B (en) | A kind of adaptive pressure-equalizing device | |
| CN205140194U (en) | Passive wireless switch | |
| CN102810797A (en) | Wireless remote control socket | |
| CN203325163U (en) | Alarm device | |
| CN105162227A (en) | Wireless mobile power supply having wireless charging and discharging function, and apparatus | |
| CN204271679U (en) | A kind of induction charging type detection alarm device | |
| CN206962345U (en) | Rotor wing unmanned aerial vehicle remove can cutting object device | |
| CN105262233A (en) | Mobile equipment with wireless charging and discharging function and device | |
| CN204376900U (en) | A kind of radio station built-in aerial coalignment improving ultrashort wave antenna gain | |
| CN204573448U (en) | A kind of outlet pipe with voicing function | |
| CN204180360U (en) | A kind of induction charging lighting device | |
| CN205714451U (en) | Remotely throttle opens dynamic control device | |
| CN203785565U (en) | Electronic digital wireless remote control detonator | |
| CN203070053U (en) | Intelligent air cannon control box |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 400039 Chongqing Jiulongpo Branch City Road No. 6 Applicant after: CCTEG CHONGQING RESEARCH INSTITUTE Co.,Ltd. Address before: 400039 Chongqing Jiulongpo Branch City Road No. 6 Applicant before: Chongqing Research Institute of China Coal Technology & Engineering Group Corp. |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: CHINA COAL SCIENCE AND INDUSTRY GROUP CHONGQING RESEARCH INSTITUTE TO: CHINA COAL TECHNOLOGY ENGINEERING GROUP CHONGQING RESEARCH INSTITUTE |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |