CN105782724B - A kind of automatic liquid seal device of coal gas - Google Patents
A kind of automatic liquid seal device of coal gas Download PDFInfo
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- CN105782724B CN105782724B CN201410792175.0A CN201410792175A CN105782724B CN 105782724 B CN105782724 B CN 105782724B CN 201410792175 A CN201410792175 A CN 201410792175A CN 105782724 B CN105782724 B CN 105782724B
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- China
- Prior art keywords
- cavity
- coal gas
- smoke inlet
- seal device
- inlet pipe
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- 239000007788 liquid Substances 0.000 title claims abstract description 118
- 239000003034 coal gas Substances 0.000 title claims abstract description 62
- 239000000779 smoke Substances 0.000 claims abstract description 45
- 239000007789 gas Substances 0.000 claims description 47
- 239000000243 solution Substances 0.000 claims description 30
- 239000012530 fluid Substances 0.000 claims description 21
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 16
- 239000003546 flue gas Substances 0.000 claims description 16
- 238000002347 injection Methods 0.000 claims description 15
- 239000007924 injection Substances 0.000 claims description 15
- 230000037452 priming Effects 0.000 claims description 13
- 238000005086 pumping Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 208000002925 dental caries Diseases 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims 1
- 238000004891 communication Methods 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 description 8
- 230000005611 electricity Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 235000019504 cigarettes Nutrition 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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- Coke Industry (AREA)
- Auxiliary Methods And Devices For Loading And Unloading (AREA)
Abstract
The present invention provides a kind of automatic liquid seal device of coal gas, including vent portion and wet seals, the vent portion includes the first cavity and smoke inlet pipe equipped with solution, position on the first cavity liquid level forms smoke inlet, exhanst gas outlet, the smoke inlet pipe is extend into first cavity by the smoke inlet, and the bottom of the smoke inlet pipe is on the liquid level of first cavity；The wet seals include the second cavity and fluid-tight structure equipped with solution, with passing through pipeline communication on the liquid level of first cavity on the liquid level of second cavity, air pressure in first cavity and the second cavity when the coal gas flows backwards from the exhanst gas outlet because the smoke inlet pipe is closed and when air pressure raises, solution in second cavity is flowed into the first cavity by fluid-tight structure, liquid level in the first cavity is set to rise and enter in smoke inlet pipe, so as to which smoke inlet pipe be blocked.
Description
Technical field
The present invention relates to a kind of automatic liquid seal device of coal gas, belongs to gas pipeline liquid seal device technical field.
Background technology
Institute can liberated heat after calorific value of gas refers to the combustion gas completely burned of certain volume or quality.The high coal gas of calorific value
Liberated heat is more after burning, and imperfect combustion easily occurs, and is unfavorable for the safe handling of user.To reach calorific value of gas
The requirement that user security uses, the method for generally use is by low-BTU gas（Such as：Coal gas, flue gas or inert gas etc.）It is mixed into
Into high heating value gas, coal gas that meet user security requirement, that calorific value of gas is relatively low is obtained.
A kind of conventional method is to take the flue gas in chimney to be mixed into the high heating value gas in gas piping, is obtained after mixing
The relatively low coal gas of calorific value.Because gas pressure is higher in gas piping, the flue gas pressures in chimney are relatively low, now general using pressurization
The flue gas of above-mentioned low heat value is blown into gas piping by the mode of blower fan.Booster fan is caused to stop work when running into emergency situations
When making（As having a power failure）, the coal gas in gas piping can flow backwards along the flue gas input channel for inputting above-mentioned low heat value flue gas, hair
Soft coal gas leakage.
Prior art is usually that check-valves and dead electricity stop valve are installed on gas pipeline, when booster fan is stopped
When, check-valves and dead electricity stop valve are closed, and prevent the coal gas in gas piping from being blowed back into through flue gas input channel in chimney.But by
The pressure of coal gas is larger in gas piping, and above-mentioned check-valves and dead electricity stop valve are again mechanical valves, it is easy to it is not closed completely,
Cause gas leak, hidden danger is brought to safety in production.
The content of the invention
Therefore, the technical problem to be solved in the present invention in overcome used in the prior art in flue gas input channel only
Return the machinery valves such as valve, dead electricity stop valve to be easily not closed completely, cause gas leak, and then lacking for hidden danger is brought to safety in production
Fall into, so as to provide one kind when booster fan is stopped, can be engaged with above-mentioned machinery valve, so that flue gas is fully sealed
Pipeline, so as to avoid the automatic liquid seal device of the coal gas of gas leak.
Therefore, the present invention provides a kind of automatic liquid seal device of coal gas, including vent portion and wet seals, wherein described logical
Gas part includes the first cavity and smoke inlet pipe equipped with solution, and the position on the first cavity liquid level forms
Smoke inlet, exhanst gas outlet, the smoke inlet pipe is extend into first cavity by the smoke inlet, and the cigarette
The bottom of gas inlet tube is on the liquid level of first cavity；The wet seals include the second cavity equipped with solution
And fluid-tight structure, on the liquid level of second cavity with the liquid level of first cavity by pipeline communication, in institute
The air pressure in the first cavity and the second cavity is stated when the coal gas flows backwards from the exhanst gas outlet because of the smoke inlet pipe quilt
Close and air pressure when raising, the solution in second cavity is flowed into first cavity by the fluid-tight structure, makes institute
State liquid level in the first cavity to rise and enter in the smoke inlet pipe, so as to which the smoke inlet pipe be blocked.
The fluid-tight structure includes：
Communicating pipe, there is one end and the outlet end connected under the liquid level of first cavity the communicating pipe, and stretch into
Second inside cavity, and higher than the liquid feeding end of liquid level in second cavity；
Air pipe, the air pipe are set in the outside for being located at second inside cavity point of the communicating pipe, and have
There is with the air openend of atmosphere and all the time at least one fluid-through port with the second cavity fluid connection all the time.
The pumping equipment for the solution to be discharged is additionally provided with first cavity.
The pumping equipment includes the leakage fluid dram being opened on first cavity, and controls the leakage fluid dram break-make
Draining valve, and the position of the leakage fluid dram is less than the lower end of the smoke inlet pipe.
Also include being used for the priming device for injecting solution into second cavity.
The priming device includes the liquid injection port being opened on second cavity.
It is additionally provided with second cavity for the redundant solution injected by the priming device to be discharged to control liquid
The leveling device of face height.
The leveling device includes the liquid outlet being opened on second cavity, and the height of the liquid outlet is less than
The liquid feeding end certain altitude h, the height h≤90mm.
Check-valves is provided with the smoke inlet pipe between connection flue gas source and the smoke inlet.
The solution is water.
A kind of automatic liquid seal device of coal gas of the present invention has advantages below：
1. the automatic liquid seal device of coal gas of the present invention, is arranged between gas piping and machinery valve, and logical by designing
Gas part and wet seals are engaged, and work as fan trouble, when the coal gas in gas piping flows backwards, due on flue only
Return the closing function of valve so that the first cavity of vent portion and the second inside cavity of part wet seals are because being filled with coal gas
And air pressure raises, the solution in the second cavity is forced to be flowed into the first inside cavity by fluid-tight structure so that in the first cavity
The liquid level of solution rise in portion, until the mouth of pipe of completely plugged firmly smoke inlet pipe, so as to realize tight sealing, it is thus possible to anti-
Only coal gas is from gas leakage at the machinery valve of smoke inlet pipe upstream.This kind ingenious in design, has flexibly used between coal gas and air
Pressure change, sealing can be effectively realized, so as to reduce potential safety hazard.
2. the automatic liquid seal device of coal gas of the present invention, sets above-mentioned fluid-tight structure to include communicating pipe and air pipe, due to big
The air openend of tracheae is communicated with air all the time, and at least one and above-mentioned second cavity fluid connection is provided with air pipe
At least one fluid-through port, therefore when coal gas flow backwards cause gas pressure in the first and second cavitys to raise when, gas urges
The liquid of second inside cavity is entered in air pipe, further through being flowed into communicating pipe in the first cavity so that the first cavity
In liquid level rise, and final clogging smoke inlet pipe, so as to realize automatic fluid-tight.
3. the automatic liquid seal device of coal gas of the present invention, is additionally provided with the discharge opeing for solution to be discharged on above-mentioned first cavity
Device, above-mentioned pumping equipment include the leakage fluid dram being opened on the first cavity, and the draining valve of control leakage fluid dram break-make, and
The position of above-mentioned leakage fluid dram is less than the lower end of smoke inlet pipe；When fluid-tight is finished, it is necessary to when restarting booster fan, in order to will
Flue gas drying is unobstructed to be input in gas piping, it is necessary to is discharged the solution of the first inside cavity, is now only needed to open
Above-mentioned draining valve, unnecessary solution can be from the leakage fluid dram discharges being arranged on the first cavity wall, and very convenient, discharge opeing is complete
Bi Hou, draining valve is closed, first, avoiding smoke spillage, stopped operating again second, working as the booster fan caused by the reasons such as power failure
When, the automatic fluid-tight function of the automatic liquid seal device of coal gas of the present invention can continue to play a role.
4. the automatic liquid seal device of coal gas of the present invention, the fluid injection for injecting solution is additionally provided with the second cavity and is filled
Put, specifically, priming device may be configured as the liquid injection port being opened on the second cavity, after a fluid-tight, the second cavity
Internal liquid can be reduced, if not adding liquid, be just likely to influence self-sealing effect next time, now set
Priming device is stated, and enough liquid is added by priming device after automatic fluid-tight function enables every time, thereby may be ensured that
The automatic liquid seal device of coal gas of the present invention may be reused, and can ensure good sealing effectiveness.
5. the automatic liquid seal device of coal gas of the present invention, it is additionally provided with the second cavity for that will be noted by above-mentioned priming device
The redundant solution entered is discharged to control the leveling device of the second inside cavity liquid level, sets above-mentioned leveling device
Including the liquid outlet being opened on the second cavity, the height of liquid outlet is less than liquid feeding end certain altitude h；Because the present invention realizes certainly
The principle of hydrodynamic envelope is using the pressure differential between gas pressure and atmospheric pressure, so to the liquid level in the second cavity with connecting
Height h between the liquid feeding end of pipe is required, because only that when the solution that above-mentioned pressure differential is oppressed in the second cavity enters
It certain altitude and can be entered into air pipe from liquid feeding end inside communicating pipe, and input enough liquid and enter first
Inside cavity, the effect of automatic fluid-tight can be played, therefore set above-mentioned leveling device to be easy to by above-mentioned liquid injection port
Level control when injecting liquid to the second inside cavity to the second inside cavity, so as to ensure sealing effectiveness.
6. the automatic liquid seal device of coal gas of the present invention, above-mentioned solution can be water or other can realize this hair
The liquid of obvious results fruit.
Brief description of the drawings
Fig. 1 is the schematic view of the mounting position of the automatic liquid seal device of coal gas of the present invention in the application.
Fig. 2 is structural representation of the automatic liquid seal device of coal gas of the present invention in the normal feed status of coal gas.
Fig. 3 is structural representation of the automatic liquid seal device of coal gas of the present invention when coal gas flows backwards sealing state.
In figure：
The automatic liquid seal device of 1- coal gas, the cavitys of 2- second, 21- liquid injection ports, 211- fluid injection valves, 22- liquid outlets, 3- first
Cavity, 30- smoke inlets, 31- smoke inlet pipes, 32- smoke inlets end, 33- draining valves, 4- exhanst gas outlets, 5- communicating pipes,
51- liquid feeding ends, 52- outlet ends, 6- air pipes, 61- air openend, 62- fluid-through ports, 7- pipelines；
100- chimneys, 101- conveyance conduits, 102- check-valves, 103- booster fans, 104- gate valves, 105- gas pipings.
Embodiment
A kind of automatic liquid seal device of coal gas provided by the invention is described in further detail below in conjunction with the accompanying drawings.
Embodiment 1
The present embodiment provides a kind of automatic liquid seal device of coal gas, and its installation site is as shown in figure 1, flue gas in chimney 100
Under the swabbing action of booster fan 103, pressurization is entered through conveyance conduit 101, check-valves 102, the automatic liquid seal device 1 of coal gas
Inside blower fan 103, after pressurization, it is blown into through gate valve 104 in gas piping 105, the coal gas higher with calorific value mixes, so as to obtain
The relatively low coal gas for being suitable to life and using of calorific value.
When booster fan 103 stops operating caused by cause specific for power-off etc., due to the coal gas pressure in gas piping 105
Power is larger, coal gas can be greasy flue gas input path flow backwards, because check-valves 102 is mechanical valve, can not ensure to be fully sealed, one
Denier coal gas leaks, and will bring considerable risk to safety in production, it is therefore desirable to sets coal gas automatic before check-valves 102
Liquid seal device 1.
The automatic liquid seal device of coal gas of this implementation is as shown in Fig. 2 including vent portion and wet seals, wherein vent portion
Including the first cavity 3 and smoke inlet pipe 31 equipped with solution, cigarette is molded or is provided with the position of the ullage of the first cavity 3
Gas entrance 30 and exhanst gas outlet 4, smoke inlet pipe 31 is extend into inside the first cavity 3 by smoke inlet 30, and smoke inlet
The bottom of pipe 31 is located on the liquid level inside the first cavity 3.
Wet seals include the second cavity 2 and fluid-tight structure equipped with solution, the liquid level above section inside the second cavity 2
With the part more than liquid level inside first cavity 3 by the gas connection of pipeline 7, the gas in the first cavity 3 and the second cavity 2
Be pressed in above-mentioned coal gas from exhanst gas outlet 4 flow backwards when because smoke inlet pipe 31 by check-valves 102 close and air pressure raise when, the second chamber
Solution in body 2 is flowed into the first cavity 3 by above-mentioned fluid-tight structure, the liquid level in the first cavity 3 is increased and is entered cigarette
In gas inlet tube 31, so as to which smoke inlet pipe 31 be blocked, realization is fully sealed.
Above-mentioned fluid-tight structure includes communicating pipe 5 and air pipe 6, and wherein communicating pipe 5 has one end and the liquid level of the first cavity 3
Under the outlet end 52 that connects, and stretch into inside the second cavity 2, and higher than the liquid feeding end 51 of liquid level in the second cavity 2；
Air pipe 6 be set in communicating pipe 5 positioned at the outside of the inside points of the second cavity 2, and with all the time with atmosphere
Air openend 61 and at least one fluid-through port 62 with the fluid connection of the second cavity 2 all the time.
The pumping equipment for solution to be discharged is additionally provided with above-mentioned first cavity 3.Above-mentioned pumping equipment includes opening up
Leakage fluid dram on the first cavity 3, and the draining valve 33 of the upper leakage fluid dram break-make of control, and the position of leakage fluid dram is less than flue gas
The lower end of inlet tube 31.
The automatic water sealing arrangement for coal gas of the present invention, in addition to for injecting the priming device of solution into the second cavity 2.On
State the liquid injection port 21 that priming device includes being opened on the second cavity 2.Homepage valve 211 is provided with liquid injection port 21, is being noted
Closed after liquid, for ensureing the inner sealing of the second cavity 2.
It is additionally provided with above-mentioned second cavity 2 for the redundant solution injected by priming device to be discharged to control liquid level height
The leveling device of degree.Above-mentioned leveling device includes the liquid outlet 22 being opened on the second cavity 2, the height of liquid outlet 2
Liquid feeding end 51 certain altitude h, height h≤90mm of the degree less than communicating pipe 5.
As shown in figure 3, when when booster fan 103 is stopped caused by the reasons such as power failure, check-valves 102 is closed, now
Coal gas flows backwards the space entered more than first cavity 3 and the internal liquid level of the second cavity 2 from gas piping 105 through exhanst gas outlet 4,
Because space more than first cavity 3 and the internal liquid level of the second cavity 2 does not communicate with extraneous directly gas, coal gas can oppress simultaneously
Liquid level inside first cavity 3 and the second cavity 2, the liquid inside the second cavity 2 through fluid-through port 62 enter air after being pressurized
The inside certain altitude of pipe 6, because the height between the internal liquid level of 51 and second cavity of liquid feeding end 2 of communicating pipe 5 is less than h, second
Liquid in cavity 2 can enter communicating pipe 5 from liquid feeding end 51 and further flow into the first cavity 3, the liquid level inside the first cavity 3
Gradually rise, be fully sealed so as to which the smoke inlet end 32 of smoke inlet pipe 31 is blocked into closing realization.
When needing to restart booster fan 103 to the input flue gas of gas piping 105, draining valve 33 is opened by first
The liquid discharge of smoke inlet pipe 31 is sealed inside cavity 3, draining valve 33 is closed after discharge；Fluid injection valve 211 is opened,
By liquid injection port 21 to liquid is injected inside the second cavity 2, stop injection when the liquid of injection is discharged from liquid outlet 22, and
Close fluid injection valve 211 and liquid outlet 22.After completing aforesaid operations, you can open booster fan 103 and work, when the unexpected feelings of appearance
During condition, the automatic liquid seal device 1 of coal gas of the invention still can play the function of automatic fluid-tight, avoid gas leak, ensure safety
Production.
In the present embodiment, above-mentioned solution is water, and other, which can meet, realizes that the liquid of the object of the invention equally can be with.
Obviously, above-described embodiment is only intended to clearly illustrate example, and is not the restriction to embodiment.For
For those of ordinary skill in the art, other various forms of changes or change can also be made on the basis of the above description
It is dynamic.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change or change thus extended out
Among moving still in the protection domain of the invention.
Claims (10)
- A kind of 1. automatic liquid seal device of coal gas, it is characterised in that：Including vent portion and wet seals, wherein the vent portion Including the first cavity (3) and smoke inlet pipe (31) equipped with solution, position on the first cavity (3) liquid level into Type has smoke inlet (30), exhanst gas outlet (4), and the smoke inlet pipe (31) is extend into described by the smoke inlet (30) In first cavity (3), and the bottom of the smoke inlet pipe (31) is on the liquid level of first cavity (3)；It is described Wet seals include the second cavity (2) and fluid-tight structure equipped with solution, on the liquid level of second cavity (2) with it is described Connected on the liquid level of first cavity (3) by pipeline (7), the air pressure in first cavity (3) and the second cavity (2) exists The coal gas from the exhanst gas outlet (4) flow backwards when because the smoke inlet pipe (31) is closed and when air pressure raises, described the Solution in two cavitys (2) is flowed into first cavity (3) by the fluid-tight structure, makes the interior liquid of first cavity (3) Face rises and entered in the smoke inlet pipe (31), so as to which the smoke inlet pipe (31) be blocked.
- 2. the automatic liquid seal device of coal gas according to claim 1, it is characterised in that：The fluid-tight structure includes：Communicating pipe (5), the communicating pipe (5) have one end and the outlet end connected under the liquid level of first cavity (3) (52), and the second cavity (2) inside is stretched into, and higher than the liquid feeding end (51) of the interior liquid level of second cavity (2)；Air pipe (6), the air pipe (6) be set in the communicating pipe (5) positioned at the outer of the second cavity (2) inside points Portion, and with all the time with the air openend (61) of atmosphere and all the time with the second cavity (2) fluid connection at least One fluid-through port (62).
- 3. the automatic liquid seal device of coal gas according to claim 2, it is characterised in that：It is additionally provided with first cavity (3) For the pumping equipment for discharging the solution.
- 4. the automatic liquid seal device of coal gas according to claim 3, it is characterised in that：The pumping equipment includes being opened in institute State the leakage fluid dram on the first cavity (3), and the draining valve (33) of the control leakage fluid dram break-make, and the position of the leakage fluid dram Set low in the lower end of the smoke inlet pipe (31).
- 5. the automatic liquid seal device of coal gas according to any one of claim 2-4, it is characterised in that：Also include being used for institute State the priming device of injection solution in the second cavity (2).
- 6. the automatic liquid seal device of coal gas according to claim 5, it is characterised in that：The priming device includes being opened in institute State the liquid injection port (21) on the second cavity (2).
- 7. the automatic liquid seal device of coal gas according to claim 5, it is characterised in that：It is additionally provided with second cavity (2) For the redundant solution injected by the priming device to be discharged to control the leveling device of liquid level.
- 8. the automatic liquid seal device of coal gas according to claim 7, it is characterised in that：The leveling device includes opening up Liquid outlet (22) on second cavity (2), the height of the liquid outlet (2) are less than the liquid feeding end (51) certain altitude H, the height h≤90mm.
- 9. the automatic liquid seal device of coal gas according to claim 1, it is characterised in that：Flue gas source and the smoke inlet pipe (31) it is provided with check-valves (102).
- 10. the automatic liquid seal device of coal gas according to any one of claim 1-4, it is characterised in that：The solution is water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410792175.0A CN105782724B (en) | 2014-12-19 | 2014-12-19 | A kind of automatic liquid seal device of coal gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410792175.0A CN105782724B (en) | 2014-12-19 | 2014-12-19 | A kind of automatic liquid seal device of coal gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105782724A CN105782724A (en) | 2016-07-20 |
| CN105782724B true CN105782724B (en) | 2018-03-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410792175.0A Expired - Fee Related CN105782724B (en) | 2014-12-19 | 2014-12-19 | A kind of automatic liquid seal device of coal gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105782724B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1828122A (en) * | 2006-04-18 | 2006-09-06 | 杨裕能 | Automatic gas leakage preventing device |
| CN201810993U (en) * | 2010-09-19 | 2011-04-27 | 钦州永盛锰业有限公司 | Electric furnace gas conduit non-return water seal device |
| CN201858526U (en) * | 2009-12-02 | 2011-06-08 | 青岛天人环境股份有限公司 | Positive/negative pressure protection device with water condensation function |
| CN202852856U (en) * | 2012-09-29 | 2013-04-03 | 山东铁雄冶金科技有限公司 | Burning device and tempering water seal device thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5169807B2 (en) * | 2008-12-26 | 2013-03-27 | 新日鐵住金株式会社 | Water-containing gas holder and water-sealing valve blocking method for water-containing gas holder |
-
2014
- 2014-12-19 CN CN201410792175.0A patent/CN105782724B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1828122A (en) * | 2006-04-18 | 2006-09-06 | 杨裕能 | Automatic gas leakage preventing device |
| CN201858526U (en) * | 2009-12-02 | 2011-06-08 | 青岛天人环境股份有限公司 | Positive/negative pressure protection device with water condensation function |
| CN201810993U (en) * | 2010-09-19 | 2011-04-27 | 钦州永盛锰业有限公司 | Electric furnace gas conduit non-return water seal device |
| CN202852856U (en) * | 2012-09-29 | 2013-04-03 | 山东铁雄冶金科技有限公司 | Burning device and tempering water seal device thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105782724A (en) | 2016-07-20 |
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Effective date of registration: 20220622 Address after: 3007, Hengqin international financial center building, No. 58, Huajin street, Hengqin new area, Zhuhai, Guangdong 519031 Patentee after: New founder holdings development Co.,Ltd. Patentee after: SUZHOU SUXIN SPECIAL STEEL Co.,Ltd. Patentee after: JIANGSU SUZHOU STEEL GROUP Co.,Ltd. Address before: 100871, Beijing, Haidian District Cheng Fu Road 298, founder building, 9 floor Patentee before: PEKING UNIVERSITY FOUNDER GROUP Co.,Ltd. Patentee before: SUZHOU SUXIN SPECIAL STEEL Co.,Ltd. Patentee before: JIANGSU SUZHOU STEEL GROUP Co.,Ltd. |
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