CN203440452U - Hydrogen generator - Google Patents
Hydrogen generator Download PDFInfo
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- CN203440452U CN203440452U CN201320487914.6U CN201320487914U CN203440452U CN 203440452 U CN203440452 U CN 203440452U CN 201320487914 U CN201320487914 U CN 201320487914U CN 203440452 U CN203440452 U CN 203440452U
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- hydrogen
- electrolyzer
- cooling system
- control unit
- power supply
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
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Abstract
The utility model discloses a hydrogen generator which comprises a hydrogen generation device and a controller, wherein the controller comprises a three-phase power supply which is respectively connected with the input ends of a rectifier circuit and a switch power supply; the input ends of the rectifier circuit and the switch power supply are respectively connected with the input ends of a direct-current switch circuit and an intelligent program control unit; the output end of the intelligent program control unit is connected with the hydrogen generation device through the direct-current switch circuit; a current signal, a temperature signal and a pressure signal arranged on the hydrogen generation device are connected with the intelligent program control unit; the hydrogen generation device comprises electrolytic baths and a cooling system; heat exchangers are arranged on two sides of the electrolytic baths respectively; an inlet and an outlet of circulation cooling water are formed in the heat exchangers; a circulation cooling system is formed by the inlet and the outlet together with a pump and the cooling system through pipelines; a hydrogen and oxygen outlet is formed in the upper part of the heat exchanger close to the electrolytic baths. According to the hydrogen generator, the electrolytic baths and the cooling system are organically combined together, and with respect to electric control, the common direct-current power supply mode is changed.
Description
Technical field
The utility model relates to the technical field of new energy development, by water, is specifically the electrolyzer of raw material high efficiency manufacture hydrogen and the hydrogen generator of electronic impulse control techniques.Its objective is as seeking cost-effectively, can realize suitability for industrialized production essence solution is provided.
Background technology
The energy is as the economic lifeline in the world, and the power of social development, has been subject to the great attention of various countries.Hydrogen is gradually known together by common people as a kind of clean, efficient and resourceful new forms of energy.The following advantage that hydrogen energy source has will become one of ultimate energy of the mankind.
1. clean.In combustion of hydrogen process, only produce water to environment without any pollution, realize real " zero release ".
2. energy storage is high.The 1 gram of hydrogen that burns can be emitted the heat of 140,000 joules, is about 3 times of 1 gram of gasoline heat release of burning.
3. service efficiency is high.The heat that adopts catalyticcombustion hydrogen to produce, than the high 10-15% of the thermo-efficiency of conventional fossil oil; For oil engine, produce power, than the high 15-25% of gasoline efficiency.
4. source is abundant.Account in the water of earth surface 71% and contain a large amount of hydrogen, resource is very abundant.
5. of many uses.With hydrogen, replace coal and oil, do not need existing technical equipment to do great transformation, present oil engine certain modification can be used.Substitute acetylene gas and oxygen and do metal solder, cutting process, its efficiency is high more than 3 times.Also can be used for fuel cell, or convert solid state hydrogen to as the standby removable energy.In a word, as new forms of energy, can substitute all power source fuel.
Although hydrogen is one of the abundantest element of nature, natural hydrogen but seldom has on the ground, so can only rely on manually, produces.But as the energy, use, common domestic fuel particularly, first requires that hydrogen producing amount is large, safe reliability is high, and requirement steady running for a long time.Require cost lower simultaneously, have economically feasibility, this is the primary standard of hydrogen producing technology from now on.With regard to long-range and macroscopical with regard to, the main source of hydrogen is water, should be the main direction of MODN technology with water-splitting hydrogen manufacturing.
With water-splitting hydrogen, be the method generally adopting at present.Because the ion exchange process when brine electrolysis will be emitted great heat; Heat dissipation problem in hydrogen process is insoluble problem for these years.If do not properly settle the heat dissipation problem of hydrogen producer, be not just difficult to make the hydrogen producer operation of working lastingly.The design of its electrolyzer is most important.
As everyone knows, water electrolysis hydrogen production technology has it from ancient times.Its principle has in middle school's textbook.Water is elementary composition by hydrogen-oxygen, and chemical name is H
2o.It is comprised of two hydrogen atoms and a Sauerstoffatom.Under " specified conditions ", to aqueous solution energising, can split water into as hydrogen and oxygen, as shown below:
Energising
2H
2O ------> 2H
2+O
Two water moleculess can be decomposed into 2 hydrogen atoms and a Sauerstoffatom.What common brine electrolysis cracking hydrogen production method adopted is all multi-form polar-plate-type electrolyzer.In use, direct current puts on electrolyzer two ends, water molecules in electrolyzer becomes orderly state by rambling state-transition under electric field action, hydrogen atom corresponding negative plate always wherein, Sauerstoffatom is always facing to positive plate, and hydrogen-oxygen chemical bond is forced to break under electric field action, form chemical zwitterion, move on zwitterion edge separately direction, respectively at anodic formation oxygen, at negative electrode, forms hydrogen.This is conventional principle of work.According to this principle ancestor, make the electrolyzer of a lot of forms, yet all do not broken away from the puzzlement that produces very big heat in electrolyzer ion exchange process.Electrolyzer temperature can not be over 55 ℃; Otherwise what produce is not hydrogen but water vapour.
Summary of the invention
It is the electrolyzer of raw material high efficiency manufacture hydrogen and the hydrogen generator of electronic impulse control techniques by water that the purpose of this utility model is to provide a kind of.
The utility model object is achieved by the following technical solution: it includes the controller part of hydrogen formation apparatus and hydrogen formation apparatus, it is characterized in that: the controller of described hydrogen formation apparatus partly comprises: respectively with rectifying circuit, the three-phase that the input terminus of switch power supply is connected or single phase alternating current power supply, rectifying circuit is connected with DC switch circuit and intelligent program control unit input terminus respectively with the output terminal of switch power supply, the output terminal of intelligent program control unit is connected with hydrogen formation apparatus by DC switch circuit, set current signal on hydrogen formation apparatus, temperature signal, pressure signal is connected with intelligent program control unit, carry out closed loop with preset equivalents and return feedback control, described hydrogen formation apparatus comprises by electrolyzer and cooling system and forming, the both sides of this electrolyzer are respectively arranged with interchanger, on interchanger, be provided with the import and export of recirculated cooling water, these import and export become airtight circulating cooling system by pipeline and water pump and cooling system are capable, on the interchanger top near electrolyzer, be provided with oxygen and hydrogen outlet, on this electrolyzer, be also provided with current signal, temperature signal and pressure signal sensor and indicating meter or warning howler.
At electrolyzer and be wherein also provided with an ionized gas flow deflector between the interchanger of a side, on ionized gas flow deflector, be evenly equipped with gas via-hole.
The output terminal of described DC switch circuit and electrolyzer input terminus join, and the output terminal of described current signal, temperature signal and pressure signal and intelligent program control unit input terminus join.
The bottom that the utility model is also included in interchanger is also provided with removal of impurities valve.
What the utility model adopted is the quantitative control techniques of pulsed technique and intelligent computer.The design that electrolyzer and cooling system combine can fully play working efficiency by the water-splitting electrode characteristic of hydrogen generator undoubtedly, and all the time in active state.The quantitative r of intelligent computer of vector pulse, makes the working efficiency multiplication of hydrogen generator.The efficiency that facts have proved this technology is the more than two times of other same device gas production rate.The utility model adopts the method for brine electrolysis cracking hydrogen production to change the design of electrolyzer especially.Solved insoluble heat radiation problem since ancient times, its economic and practical has obtained considerable effect.Its cost performance surmounts all hydrogen device and equipment at present.
The utility model is the design that electrolyzer and cooling system are combined, conventional DC Power supply mode before also having changed aspect electrical control.
Principal feature of the present utility model is: adopt contactless control, anti-explosion safety.There is overcurrent, superpressure, overtemperature automatic alarm and automatically start and quit work.The volume of this device is only 1/4th of like product; And, also have rational in infrastructure, long service life, the advantage such as easy and simple to handle, level of automation is high, and application and maintenance is very convenient.
Accompanying drawing explanation
Fig. 1 is circuit logic control block diagram of the present utility model;
Fig. 2 is the electrical schematic diagram of Fig. 1;
Fig. 3 is that in Fig. 1, structural representation sketch cuts open in the office of hydrogen formation apparatus;
Fig. 4 is dynamic effect graphic representation of the present utility model.
Below in conjunction with accompanying drawing, by example, the utility model is described in further detail; but following example is only the utility model example wherein; do not represent the rights protection scope that the utility model limits, rights protection scope of the present utility model is as the criterion with claims.
Embodiment
Shown in Fig. 1-3, it includes the controller part of hydrogen formation apparatus F and hydrogen formation apparatus, the controller of described hydrogen formation apparatus partly comprises: respectively with rectifying circuit Q1, the three-phase AC that the input terminus of switch power supply KGV is connected, rectifying circuit Q1 is connected with DC switch circuit Q2 and intelligent program control unit PCW input terminus respectively with the output terminal of switch power supply KGV, the output terminal of intelligent program control unit PCW is connected with hydrogen formation apparatus F by DC switch circuit Q2, set current signal I on hydrogen formation apparatus, temperature signal T, pressure signal P is connected with intelligent program control unit PCW, carry out closed loop with preset equivalents and return feedback control, described hydrogen formation apparatus comprises by two electrolyzers 8, it is example that 10(be take two electrolyzers) and cooling water tank system 2 form, two corresponding electrolyzer both sides that arrange and between be respectively arranged with three interchanger 7, 9, 11, and at interchanger 7, 9, 11 tops are respectively equipped with the water-in 3 being connected with circulating cooling water tank system 2, 5, 6, at interchanger 7, 9, 11 bottoms are respectively equipped with the water outlet 15 being connected with circulating cooling water tank system 2, 16, 18, water coolant in interchanger is through water outlet 15, 16, 18 by 2 one-tenth airtight circulating cooling systems of pipeline and water pump 20 and cooling water tank system, at two electrolyzers 8, 10 and interchanger therebetween 9 between be respectively arranged with an ionized gas flow deflector 12, 13, at ionized gas flow deflector 12, on 13, be evenly equipped with gas via-hole 21.Interchanger 9 tops between two electrolyzers are provided with oxygen and hydrogen outlet 4, are also provided with current signal I, temperature signal T and pressure signal Y sensor on the interchanger 9 between two electrolyzers.In addition, also indicating meter or warning howler can be set on this position as required.In Fig. 31 is the water filling port of cooling water tank system in addition.
principle of work is as follows:
The utility model comprises three-phase or single phase alternating current power supply AC, rectifier circuit Q1, high power DC switch circuit Q2, switch power supply KGV, forms with intelligent program control unit PCW, electrolyzer and cooling system F; AC power AC, by rectifier bridge Q1 and switch power supply KGV, obtains respectively direct supply DC and DC1, and DC offers high power DC switch circuit Q2, as direct current vector pulse chopping modulation power source; DC1, as control working power, offers intelligent program control unit PCW, works.Formed complete closed loop control system (see figure 1) with electrolyzer and cooling system F.
The preset computer program of PCW has determined the output DC pulse equivalent of VF; Be the DC pulse character of curve of DCF, to adapting to electrolyzer and the needed direct current pulse power source value of cooling system F.Preset parameter by current signal I, temperature signal T, pressure signal P, liquid level signal Y carries out closed loop and returns feedback and control, make whole system under the management of intelligent program control unit PCW, make electrolyzer and cooling system operate in desirable working order (Fig. 4).Its working order can be set arbitrarily.Therefore, the effect of this utility model is that other equal device is incomparable.
The technical program is to adopt the New insulated ambipolar high power transistor IGBT of grid (Q2) as the switching element of direct-current circuit, and is furnished with the control protection electric circuit consisting of diode D1, D2.What intelligent program control unit PWC adopted is technical grade one-chip computer.Current measuring element AL adopts high-precision hall element to be simulating signal I and detects.Temperature signal T, pressure signal P and liquid level signal Y all adopt high precision components.Electrolyzer and cooling system F and transition fitting all adopt high-quality stainless material.
Three-phase or single phase alternating current power supply AC, through rectification Q1, filtering C1 and switching power circuit KGV, volts DS DC and the DC1 of its output, give respectively DC switch circuit Q2 and intelligent program control unit circuit PCW.By the one-chip computer program in intelligent program control unit circuit PCW, reach the object of real-time detection and control.Make electrolyzer and cooling system F be operated in perfect condition.
Through exploration and practice for many years, the experiments of up to a hundred times are found, the conducting electrode of electrolyzer, and the conductive characteristic in water medium is regular, when just starting to switch on, very inactive, need powerful activation, and can not be excessive, otherwise can waste electric energy, do not reach economical and practical effect.Therefore; by computer program, specified rate is set; be DC pulse equivalent and precise time constant VF, by High-speed DC switch circuit Q2, protection diode D1, export desirable HVDC Modulation pulse power DCF, give electrolyzer 14, the 19 2 end power supplies of electrolyzer and cooling system F.By the parameter detecting signal of high-precision current signal I, temperature signal T, pressure signal P and liquid level signal Y, the computer that feeds back to intelligent program control unit PCW carries out calculation control, makes electrolyzer 8,10 electrolytic efficiencies reach the optimal state that works asynchronously with the cooling flow velocity of cooling system water pump 20 water cycle.The i.e. efficient saves energy effect cooling to electrolyzer again.Its dynamic effect graphic representation (see figure 4).
Power initiation as shown in Figure 4: by time t1(10 second), elapsed time t2(5 minute) strong pulse activation generator electrode, by the time of t3----t7, the pulse power falls (conservation of power) after rise by preset rule.During time t8, electrolyzer and cooling system start steady operation, and its power supply pulse power maintains very low synchronous economical operation state, therefore visible, the aerogenesis effect of the high output of low power supply.
By the working order curve above Fig. 4, be not difficult to find out, hydrogen curve of output, the slope of ordering from a that starts working is very high, and the action effect of strong pulse power supply is described.Also can see the momentum effect after being activated by producer completely from a point to point b simultaneously.This moment, pulse power curve of output is rule and declines, and by various measuring elements (current signal I, temperature signal T, pressure signal P, liquid level signal Y), its data signal offers PWC computer and processes.Make electrolyzer and cooling system F carry out steady operation in the parameters such as parameter (as pressure signal P, temperature signal T) of setting as required.This utility model by repeatedly adjusting preset parameter, can reach optimal hydrogen and tell on before use.
system operation explanation:
First will in the cooling water tank 2 of this device (in Fig. 3), fill it up with comparatively clean clear water, the filler 1 by this device is to water filling in water tank, and has three grades of liquid level switch amounts output liquid level signal Y indication liquid levels.14,19 connect power supply between controller (Fig. 2) and electrolyzer and cooling system (Fig. 3) and control signal wire (, I, T, P, Y), by wire size correspondence, connect.Connect the alternating current input power supplying AC of controller (Fig. 2), preferably by the auto-switch access with overcurrent protection for well.Check whether electrolyzer and cooling system pipeline leak.It is ready that all are normally considered as preparation work.This installs first use also needs to check whether there is gas leak phenomenon, if having, will process in time, because hydrogen is flammable explosive gas, prevents from causing unnecessary injury.Generally have air pressure to produce after 1 minute in energising after, check.
Before controlling power switch K energising, all control turn-knob RW1, RW2, RW3 on controller must be made zero.Prevent overcurrent impact failure control system component.
The outside auto-switch that closes, Controlling System obtains power supply AC, and water pump 20 is started working and controller (Fig. 2) powers on, and opens the control power switch K on controller, and this system is started working.Slowly finely tune given turn-knob RW1, make reometer A on controller at (25-30) A; At this moment this device is started working automatically by the working routine of Fig. 4.As shown in Figure 4: by t1 time (10 seconds) power initiation, through t2 time (5 minutes) strong pulse activation generator electrode, by the time of t3----t7, the pulse power falls (conservation of power) after rise by preset rule.T8 producer starts steady operation.Producer F starts aerogenesis, by pneumatic outlet (Fig. 3) 4 outputs.
(see figure 2) in use, turn on the power switch K, power module Q1 converts alternating-current AC to direct current, and undertaken after filtering process by C1, by Q2, carry out pulsed modulation and put on electrolyzer and cooling system F(Fig. 2) 14, 19 two ends, electrolyzer (Fig. 3) 12, water molecules in 13 becomes orderly state by rambling state-transition under electric field action, hydrogen atom corresponding negative plate always wherein, Sauerstoffatom is always facing to positive plate, hydrogen-oxygen chemical bond is forced to break under electric field action, form chemical zwitterion, move on zwitterion edge separately direction, respectively at anodic formation oxygen, at negative electrode, form hydrogen.Formed gas together with electrolytic solution after circulating cooling system is delivered to interchanger 9 to carry out heat exchange from exporting 4 output hydrogen.Electrolytic solution comes back to electrolyzer by 20 water pumps and carries out electrolysis, and hydrogen or oxygen gas after electrolysis by electrolyzer, the gas via-hole 21 on ionized gas flow deflector 12,13 enters into the interior further disengaging microelectrolysis liquid of interchanger 9, safe water sealed cans, dry type hydrogen-oxygen spark arrester through exterior arrangement are transported to gas equipment, and igniting can be used.The gaseous tension signal P of intelligent program Controlling System PWC automatic checkout system, electrolyzer water level signal Y, electrolyzer temperature signal T also stop machine automatically, and overtemperature alarm, automatic water supplement etc. are processed automatically.D1, D2 all do afterflow provide protection.
Hydrogen is to adopt the technology of producing as required, with how many, how much produces, and the mode that need not produce is worked.Carry out low pressure air feed, make this equipment safety reliable.Thoroughly solved safety issue.
When electrolyzer and cooling system need to be safeguarded, open the removal of impurities valve 17 that is arranged on interchanger bottom, to remove the inside impurity of interchanger.
As environmental protection new forms of energy, can supply all trades and professions required use.Can replaced acetylene, the industrial gasses such as propane flammable gas, golden flame combustion gas, special sharp gas, liquefied gas tank, Sweet natural gas.Have advantages of that other combustion gas can not compare.Hydrogen energy source manufacture only needs water power, and work round-the-clock continuously, as long as there is water to have electricity, just has gas supply always.
electrical principle explanation:
This device be by rectifier circuit Q1, high power DC switch circuit Q2, switch power supply KGV, with intelligent program control unit PCW, current signal I, temperature signal T, pressure signal P, liquid level signal Y, electrolyzer and cooling system F(Fig. 3) form.It is characterized in that: AC power AC, by rectifier bridge Q1 and switch power supply KGV, obtains respectively work and controls needed direct supply DC, DC1.K is the start-stop trip switch of power rectifier module, also be the control output switch in intelligent program control module PCW, it is by the prefabricated parameter of current signal I, temperature signal T, pressure signal P and liquid level signal Y, calculates the result draw carry out work through computer.It is working routine intelligent switch.RW1 is the quantitative fine adjustment of exporting to of power rectifier module.To carry out output rating adjustment according to the different size of hydrogen generator.RW2, RW3 are respectively pulse-repetition and pulse width manual setting turn-knob (on controller operating panel).A is working current table, and V is that operating voltage table is all on controller operating panel.Can see at any time and look into working order.
The preset computer program of intelligent program control module PCW has determined the output DC pulse equivalent of VF; Thereby controlled high power DC switch circuit Q2 output characteristic, i.e. the DC pulse character of curve of DCF, to adapting to electrolyzer and the required synchronous direct current pulse power source value of cooling system F.Preset equivalents by current signal I, temperature signal T, pressure signal P carries out closed loop and returns feedback and control, and makes whole system under the management of intelligent program control unit PCW, operate in desirable working order.Its working order can be set arbitrarily.Therefore, the effect of this technology is that other equal device is incomparable.
Claims (4)
1. a hydrogen generator, it includes the controller part of hydrogen formation apparatus and hydrogen formation apparatus, it is characterized in that: the controller of described hydrogen formation apparatus partly comprises: respectively with rectifying circuit, the three-phase that the input terminus of switch power supply is connected or single phase alternating current power supply, rectifying circuit is connected with DC switch circuit and intelligent program control unit input terminus respectively with the output terminal of switch power supply, the output terminal of intelligent program control unit is connected with hydrogen formation apparatus by DC switch circuit, set current signal on hydrogen formation apparatus, temperature signal, pressure signal is connected with intelligent program control unit, carry out closed loop with preset equivalents and return feedback control, described hydrogen formation apparatus comprises by electrolyzer and cooling system and forming, the both sides of this electrolyzer are respectively arranged with interchanger, on interchanger, be provided with the import and export of recirculated cooling water, these import and export become airtight circulating cooling system by pipeline and water pump and cooling system are capable, on the interchanger top near electrolyzer, be provided with oxygen and hydrogen outlet, on this electrolyzer, be also provided with current signal, temperature signal and pressure signal sensor and indicating meter or warning howler.
2. Ju hydrogen generator claimed in claim 1, is characterized in that: at electrolyzer and be wherein also provided with an ionized gas flow deflector between the interchanger of a side, on ionized gas flow deflector, be evenly equipped with gas via-hole.
3. Ju hydrogen generator claimed in claim 1, is characterized in that: the output terminal of described DC switch circuit and electrolyzer input terminus join, and the output terminal of described current signal, temperature signal and pressure signal and intelligent program control unit input terminus join.
4. Ju hydrogen generator claimed in claim 1, is characterized in that: the bottom at interchanger is also provided with removal of impurities valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320487914.6U CN203440452U (en) | 2013-08-12 | 2013-08-12 | Hydrogen generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320487914.6U CN203440452U (en) | 2013-08-12 | 2013-08-12 | Hydrogen generator |
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| Publication Number | Publication Date |
|---|---|
| CN203440452U true CN203440452U (en) | 2014-02-19 |
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ID=50091520
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320487914.6U Expired - Fee Related CN203440452U (en) | 2013-08-12 | 2013-08-12 | Hydrogen generator |
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| CN (1) | CN203440452U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103451671A (en) * | 2013-08-12 | 2013-12-18 | 侯艳杰 | Hydrogen generator |
| GB2515850A (en) * | 2014-01-10 | 2015-01-07 | Frank Chester Staples | Methods and apparatus for controlling oxyhydrogen generation |
-
2013
- 2013-08-12 CN CN201320487914.6U patent/CN203440452U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103451671A (en) * | 2013-08-12 | 2013-12-18 | 侯艳杰 | Hydrogen generator |
| GB2515850A (en) * | 2014-01-10 | 2015-01-07 | Frank Chester Staples | Methods and apparatus for controlling oxyhydrogen generation |
| GB2515850B (en) * | 2014-01-10 | 2017-01-11 | Chester Staples Frank | Methods and apparatus for controlling oxyhydrogen generation |
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| TR01 | Transfer of patent right |
Effective date of registration: 20180914 Address after: 410000 room 1604, business building 27, Wen Xuan Road, Changsha hi tech Development Zone, Changsha, Hunan Patentee after: Hunan Hezhuo Technology Co.,Ltd. Address before: 110015 Shenshui road 616-1, Shenhe District, Shenyang, Liaoning Patentee before: Hou Yanjie |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221017 Address after: 110000 No.1, Yangshan Road, Huanggu District, Shenyang City, Liaoning Province Patentee after: Liaoning Promi Technology Co.,Ltd. Address before: 410000 room 1604, business building 27, Wen Xuan Road, Changsha hi tech Development Zone, Changsha, Hunan Patentee before: Hunan Hezhuo Technology Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140219 |
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| CF01 | Termination of patent right due to non-payment of annual fee |