CN104481901A - Gas transmission turbine pump gasification impair eliminating system and method - Google Patents
Gas transmission turbine pump gasification impair eliminating system and method Download PDFInfo
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- CN104481901A CN104481901A CN201410540553.6A CN201410540553A CN104481901A CN 104481901 A CN104481901 A CN 104481901A CN 201410540553 A CN201410540553 A CN 201410540553A CN 104481901 A CN104481901 A CN 104481901A
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- turbine pump
- gas
- liquid
- basin
- gas tank
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/16—Pumping installations or systems with storage reservoirs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/02—Stopping of pumps, or operating valves, on occurrence of unwanted conditions
- F04D15/0209—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the working fluid
- F04D15/0218—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the working fluid the condition being a liquid level or a lack of liquid supply
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
Disclosed is a system capable of automatically eliminating gasification inside a gas transmission turbine pump. The system comprises a storage tank, a turbine pump and a gas dispenser and is characterized in that a gas tank is connected in series between the storage tank and the turbine pump, the top of the gas tank is connected with the storage tank through an exhaust pipe, and the exhaust pipe is provided with a gas-phase one-way valve; a return pipe connected with the storage tank is arranged on a gas dispensing pipe; a liquid level detecting device is arranged inside the gas tank and connected with the turbine pump and controls start and stop of the turbine pump, and the liquid level detecting device is composed of a guide rod arranged inside the gas tank, a floater slidingly sleeving the guide rod and capable of moving up and down along the guide rod, a first limiting switch and a second limiting switch, wherein the first limiting switch and the second limiting switch are arranged on the inner wall of the gas tank and electrically connected with the turbine pump. The system capable of automatically eliminating gasification inside the gas transmission turbine pump has the advantages of replacing manual operation through a mechanical device, saving the labor cost and achieving automatic control and can detect existence of gasification and timely exhaust gas to ensure normal operation of the turbine pump and smooth implementation of a gas dispensing process.
Description
Technical field
The invention belongs to equipment for liquid transportation field, be specifically related to a kind of system and method automatically terminating in gas transmission turbine pump the phenomenon that gasifies.
Background technique
Along with the development of petrochemical industry, liquefied petroleum gas (LPG) (being called for short " LPG "), as a kind of chemical industry base stock and New-type fuel, is more and more subject to people's attention.Make fuel by liquefied petroleum gas (LPG), because its calorific value is high, smoke dust, without breeze, easy for operation, entering the sphere of life of people widely, is especially automobile energy supply as clean energy resource replacing gasoline or diesel fuel.Under the dual policy driving that country greatly develops clean energy resource and new-energy automobile, increasing LPG gas station and LPG automobile appear in the visual field of people.
Compared with conventional gasoline station, the working method of LPG gas station is also roughly the same with it.A complete LPG gas station should comprise following various piece: tank area (basin, residual liquid tank, excessively terraced, protection wall etc.), compressor house (compressor and associated motor), vapour groove platform, become switch board room (distribution equipment), filling machine, lightning tower, fire fighting device, office and life building etc.LPG is transported by LPG tank car and is charged in basin, and then is transported in filling machine through turbine pump delivery line, is finally injected in automobile gas tank by air filling gun.Air filling gun is in automobile gas tank during aerating, and turbine pump keeps operating condition conveying LPG.At LPG by basin in the process of air filling gun, LPG remains that liquid state can not only ensure the normal operation of turbine pump, and turbine pump Sealing can also be made under immersion conditions to play better seal action.The carrying out that the whole fueling process of final guarantee is smooth, efficient, safe.But in most of the cases, the filling machine most of the time is in off position, this just causes the turbine pump most of the time to be also in off position.In this case, the easy generating gasification phenomenon of the LPG in turbine pump, causes occurring gas-liquid coexisting state in turbine pump.Especially in the summer that temperature is higher, often there is the situation being all full of gaseous petroleum gas in turbine pump, cause turbine pump to run well.
In order to remove the gasification phenomenon in said circumstances, gas station manager can send special messenger to safeguard.When doubtful gasification occurs, the air vent that miantainers just open turbine pump is exhausted, and gas retells air vent and closes after all discharging.Thus, turbine pump just can run well.Although can removing gasification phenomenon by artificial mode, in this process, there is following several defect.
1. turbine pump air vent UNICOM be the inner and ambient atmosphere environment of turbine pump, therefore gaseous petroleum gas is finally discharged in external environment.And LPG is more or less containing harmful matter, not only befouling environment also can cause physiological damage to miantainers.
2., because LPG belongs to inflammable and explosive substances, therefore in exhaust process, there is huge potential safety hazard.Once have an accident, consequence is hardly imaginable.
3., owing to taking the mode of artificial exhaust, therefore necessarily increase human cost.
4. gaseous petroleum gas is directly discharged to the external world, result also in waste of fuel, if things go on like this, must reduce profit of operation.
In sum, the mode of artificial removing gasification inadvisable.
Summary of the invention
The technical problem to be solved in the present invention is: overcome the deficiencies in the prior art, provides a kind of system and method automatically terminating in gas transmission turbine pump the phenomenon that gasifies, can automatically terminate the gasification phenomenon in pipeline.
The technical solution adopted for the present invention to solve the technical problems is: a kind of method automatically terminating in gas transmission turbine pump the phenomenon that gasifies, comprise basin, turbine pump and filling machine, turbine pump is connected with basin and filling machine with aerating pipeline respectively by liquid transport pipeline, between basin and turbine pump, be connected in series gas tank, in gas tank, liquid level detection device is set; Liquid level detection device detects that liquid level starts turbine pump when dropping to warning liquid level, and liquid is constantly made liquid level rise to discharge the gas in gas tank by the running of turbine pump from basin suction gas tank; Turbine pump is closed when liquid level detection device detects that liquid level rises to safety levels; Can form circulation loop by Liquid transfer to basin during turbine pump running, the gas of discharge can be collected in basin by pipeline.
Preferably, when liquid level detection device detects that liquid level rises to safety levels, time delay closed turbine pump after 30 ~ 60 seconds.
The present invention also provides a kind of system automatically terminating in gas transmission turbine pump the phenomenon that gasifies of application said method, comprise basin, turbine pump and filling machine, turbine pump is connected with basin and filling machine with aerating pipeline respectively by liquid transport pipeline, gas tank is connected in series between basin and turbine pump, the top of gas tank is connected with basin by gas exhaust piping, and installs gas phase one-way valve on this gas exhaust piping; Aerating pipeline arranges one and the tank connected return line of storage; In gas tank, liquid level detection device is set; Liquid level detection device connects and controls startup and the stopping of turbine pump; Liquid level detection device comprises the guide rod be arranged in gas tank, flip sleeve is contained on guide rod and the float that can move up and down along guide rod and arrange the first limit switch and the second limit switch on gas tank inwall from top to bottom; First limit switch and the second limit switch are electrically connected with turbine pump; The first limit switch or the second limit switch action can be triggered in float moving process.
In the present invention, between the first limit switch and turbine pump, time delay relay is set.
Additionally provide a kind of system automatically terminating in gas transmission turbine pump the phenomenon that gasifies, comprise basin, turbine pump and filling machine, turbine pump is connected with basin and filling machine with aerating pipeline respectively by liquid transport pipeline, gas tank is connected in series between basin and turbine pump, the top of gas tank is connected with basin by gas exhaust piping, and installs gas phase one-way valve on this gas exhaust piping; Aerating pipeline arranges one and the tank connected return line of storage; In gas tank, liquid level detection device is set; Liquid level detection device connects and controls startup and the stopping of turbine pump; Liquid level detection device comprises the first liquid-level switch and the second liquid-level switch, and the first liquid-level switch and the second liquid-level switch are arranged on gas tank inwall from top to bottom, and are electrically connected with turbine pump.
In the present invention, between the first liquid-level switch and turbine pump, time delay relay is set.
In the present invention, the position that gas tank is connected with liquid transport pipeline is liquid entering hole, and the gas tank inwall in the front of liquid entering hole arranges splash-back.
In the present invention, return line is installed liquid phase solenoid valve, in the aerating circuit of liquid phase solenoid valve access filling machine.
Compared with prior art, the invention has the beneficial effects as follows:
1. adopt mechanical device to replace artificial, save human cost on the one hand, achieve automatic control on the other hand.Can accomplish to detect the generation of gasification and gas is discharged thus ensure that the normal operation of turbine pump and carrying out smoothly of fueling process in time.
2. the gas of discharging directly is back in basin, avoids the harm to environment and people on the one hand, avoids the waste of fuel on the other hand.
3., in exhaust process, easily occur that float or liquid level rise too fast thus cause the illusion drained gas, therefore delay function is set, guarantees that the gas in gas tank is discharged completely.
4. because the front at liquid entering hole is provided with splash-back, therefore LPG is when entering in gas tank, vertically gets off under the stop of splash-back; And breach is offered in the position of corresponding splash-back on float, LPG just impacts less than float when falling thus, ensure that float can rise with liquid level in time, improves the accuracy detecting liquid level.Or prevent its reliability of operation of false triggering liquid-level switch action breaks.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structure sectional view of gas tank in embodiment one;
Fig. 3 is the sectional view of gas tank upper half part in Fig. 2;
Fig. 4 is the sectional view along A-A line in Fig. 3;
Fig. 5 is the partial enlarged drawing at I place in Fig. 3;
Fig. 6 is the structure sectional view of gas tank in embodiment two.
Be labeled as in figure:
1 turbine pump; 2 motors; 3 gas tanks; 3.1 liquid entering hole; 3.2 liquid outlet; 3.3 air outlet; 3.4 splash-back; 4 basins; 5 filling machines; 6 liquid transport pipelines; 7 aerating pipelines; 8 return lines; 9 gas exhaust pipings; 10 gas phase one-way valves; 11 guide rods; 12 floats; 12.1 ball grooves; 12.2 balls; 12.3 breach; 13 first limit switches; 14 second limit switches; 15 first liquid-level switches; 16 second liquid-level switches; 17 liquid phase solenoid valves.
Embodiment
Below in conjunction with accompanying drawing embodiment, the present invention is described further:
Embodiment one
As shown in Figure 1, a kind of system automatically terminating in gas transmission turbine pump 1 phenomenon that gasifies, comprises basin 4, turbine pump 1, gas tank 3 and filling machine 5.Basin 4 is connected with turbine pump 1 by liquid transport pipeline 6, and turbine pump 1 is connected with filling machine 5 by aerating pipeline 7.Gas tank 3 is also connected in series between basin 4 with turbine pump 1.The position that gas tank 3 is connected with liquid transport pipeline 6 is liquid entering hole 3.1, and the position be connected with turbine pump 1 is liquid outlet 3.2.The top of gas tank 3 sets out gas port 3.3, and is connected with basin 4 by gas exhaust piping 9.Gas exhaust piping 9 is installed gas phase one-way valve 10 and prevent gas backflow.Return line 8 is installed liquid phase solenoid valve 17, to make when giving refueling, LPG is as much as possible to be entered in filling machine.Liquid phase solenoid valve 17 is connected with the aerating circuit of filling machine 5, and when aerating, liquid phase solenoid valve 17 is in closed condition; During non-aerating, it is in open mode.The flow direction of LPG during aerating is basin 4, liquid transport pipeline 6, gas tank 3, turbine pump 1, filling machine 5 successively.Aerating pipeline 7 is also offered the return line 8 be connected with basin 4 together.The flow direction of LPG during removing gasification is followed successively by basin 4, liquid transport pipeline 6, gas tank 3, turbine pump 1, return line 8, basin 4.Because gas density is less than fluid density, when the phenomenon that therefore gasifies occurs, first gas can be gathered in gas tank 3.When gas increases gradually, a part of gas will be caused to enter in turbine pump 1 thus turbine pump 1 cannot normally be worked.
As shown in Fig. 2,3,4,5, in gas tank 3, liquid level detection device is set, specifically comprises guide rod 11, float 12, first limit switch 13 and the second limit switch 14.It is inner that guide rod 11 is vertically arranged on gas tank 3, and float 12 flip sleeve is contained on guide rod 11 and also can moves up and down along guide rod 11.In order to the surface friction drag reduced further when float 12 moves is convenient to precisely detect liquid level, the hole wall of float 12 central hole offers ball grooves 12.1, and ball 12.2 is set in ball grooves 12.1, the higher pair between ball 12.2 with guide rod 11 is connected and sliding friction is become rolling friction thus reduces surface friction drag.On first limit switch 13 and the top-down inwall be arranged between gas tank 3 air outlet 3.3 and liquid outlet 3.2 of the second limit switch 14.First limit switch 13 and the second limit switch 14 are electrically connected and control electric motor starting or the stopping of turbine pump 1.Float 12 triggers the second limit switch 14 action and can start turbine pump 1 and operate, and float 12 triggers the first limit switch 13 action can allow turbine pump 1 shut down.Therefore the corresponding safety levels in the first limit switch 13 present position, the second limit switch 14 present position correspondence warning liquid level.Concrete connection control circuit is routine techniques means, and those skilled in the art can connect according to control overflow, so place does not repeat.
In order to improve testing precision further with timely removing gasification phenomenon, also take two kinds of means.Wherein a kind of is that the front of liquid entering hole 3.1 in gas tank 3 arranges splash-back 3.4, and offers the breach 12.3 that can hold splash-back 3.4 in the position of the corresponding splash-back 3.4 of float 12.Make LPG vertically can fall under the stop of splash-back 3.4 when being entered gas tank 3 by liquid entering hole 3.1 and being inner and can not impact float 12 thus make float 12 increase in time on the one hand, the obstruction of splash-back 3.4 when making float 12 arrive safety levels on the other hand, can not be subject to.Another kind of means are time delay relays of connecting between the first limit switch 13 and motor, just cutting off motor power after time delay 30s when the first limit switch 13 is triggered makes turbine pump 1 shut down, this is because extremely easily cause wave phenomenon to cause float 12 rising triggering first limit switch 13 instantaneously when LPG enters gas tank 3, the phenomenon that now gasifies is not removed completely and is therefore caused misoperation.Can stop after being all discharged according to the rated power gas carried out in the delay guarantee gas tank 3 of certain hour of turbine pump 1.
Working principle of the present invention and working procedure as follows:
When the phenomenon that do not gasify in pipeline occurs, during filling machine 5 pairs of refuelings, turbine pump 1 normally can start and operate and to be transported in automobile by LPG.When non-aerating, when turbine pump 1 is in halted state, when especially summer, temperature was higher, very easily generating gasification phenomenon in pipeline, causes gas to be gathered in gradually in gas tank 3.When the degree gasified is serious gradually, gas can squeeze liquid thus liquid level is declined.When liquid level drops to warning liquid level, the float 12 thereupon declined just can trigger the second limit switch 14 thus start turbine pump 1 and work.Turbine pump 1 operates by LPG from basin 4 suction gas tank 3, and along with increasing of LPG in gas tank 3, liquid level also rises gradually, and gas is squeezed and discharges from air outlet 3.3 and enters basin 4 through gas exhaust piping 9.Trigger the first limit switch 13 action when float 12 rises to safety levels, thus it is electric that time delay relay is obtained.After time delay 30s, cut off motor circuit makes turbine pump 1 shut down.Now gas emptying in gas tank 3, turbine pump 1 can normally start and operate with this understanding.Carry out contacting in the process of gasification in turbine pump 1 running, LPG also can be entered in return line 8 by the liquid outlet 3.2 of gas tank 3 and finally enter basin 4 and complete and once circulate.Along with LPG constantly circulates, gas is drained out.In this process, LPG and gas all do not enter in external environment, can not cause the waste of fuel yet.Therefore the contact gasification phenomenon of pollution-free low cost is achieved.
Embodiment two
As shown in Figure 6, be with embodiment one difference, liquid level detection device in the present embodiment comprises the first liquid-level switch 15 and the second liquid-level switch 16, first liquid-level switch 15 and the second liquid-level switch 16 are arranged on the inwall between gas tank 3 air outlet 3.3 and liquid outlet 3.2 from top to bottom, and the first liquid-level switch 15 and the second liquid-level switch 16 are electrically connected and control motor rotation and stopping.Identical with embodiment one, between the first liquid-level switch 15 and motor, time delay relay is set.
Although also arrange splash-back 3.4 in this embodiment, act on not identical.The setting of splash-back 3.4 is that the LPG in order to avoid entering gas tank 3 to splash on the first liquid-level switch 15 thus to trigger its action.There is splash-back 3.4, LPG just can vertically fall, ensured reliability of operation.
Embodiment three
With embodiment one and embodiment two unlike, the liquid level detection device in this embodiment is pressure type liquid level switch, and its principle is class sensor hydraulic pressure being changed into liquid level.Therefore only such switch need be set in the bottom of gas tank 3 inside.Turbine pump 1 can be started when liquid level is down to warning liquid level, turbine pump 1 can be closed when liquid level rises to safety levels.Because therefore this kind of mode comparatively accurately can arrange delaying step.Concrete connection control mode belongs to routine techniques means, does not repeat.
The above is only preferred embodiment of the present invention, and be not restriction the present invention being made to other form, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the Equivalent embodiments of equivalent variations.But everyly do not depart from technical solution of the present invention content, any simple modification, equivalent variations and the remodeling done above embodiment according to technical spirit of the present invention, still belong to the protection domain of technical solution of the present invention.
Claims (8)
1. one kind automatically terminates in gas transmission turbine pump the system of the phenomenon that gasifies, comprise basin, turbine pump and filling machine, turbine pump is connected with basin and filling machine with aerating pipeline respectively by liquid transport pipeline, it is characterized in that: between basin and turbine pump, be connected in series gas tank, the top of gas tank is connected with basin by gas exhaust piping, and installs gas phase one-way valve on this gas exhaust piping; Aerating pipeline arranges one and the tank connected return line of storage; In gas tank, liquid level detection device is set; Liquid level detection device connects and controls startup and the stopping of turbine pump; Liquid level detection device comprises the guide rod be arranged in gas tank, flip sleeve is contained on guide rod and the float that can move up and down along guide rod and arrange the first limit switch and the second limit switch on gas tank inwall from top to bottom; First limit switch and the second limit switch are electrically connected with turbine pump; The first limit switch or the second limit switch action can be triggered in float moving process.
2. a kind of system automatically terminating in gas transmission turbine pump the phenomenon that gasifies according to claim 1, is characterized in that: arrange time delay relay between the first limit switch and turbine pump.
3. one kind automatically terminates in gas transmission turbine pump the system of the phenomenon that gasifies, comprise basin, turbine pump and filling machine, turbine pump is connected with basin and filling machine with aerating pipeline respectively by liquid transport pipeline, it is characterized in that: between basin and turbine pump, be connected in series gas tank, the top of gas tank is connected with basin by gas exhaust piping, and installs gas phase one-way valve on this gas exhaust piping; Aerating pipeline arranges one and the tank connected return line of storage; In gas tank, liquid level detection device is set; Liquid level detection device connects and controls startup and the stopping of turbine pump; Liquid level detection device comprises the first liquid-level switch and the second liquid-level switch, and the first liquid-level switch and the second liquid-level switch are arranged on gas tank inwall from top to bottom, and are electrically connected with turbine pump.
4. a kind of system automatically terminating in gas transmission turbine pump the phenomenon that gasifies according to claim 3, is characterized in that: arrange time delay relay between the first liquid-level switch and turbine pump.
5., according to the arbitrary described a kind of system automatically terminating in gas transmission turbine pump the phenomenon that gasifies of Claims 1-4, it is characterized in that: the position that gas tank is connected with liquid transport pipeline is liquid entering hole, the gas tank inwall in the front of liquid entering hole arranges splash-back.
6. a kind of system automatically terminating in gas transmission turbine pump the phenomenon that gasifies according to claim 5, is characterized in that: on return line, install liquid phase solenoid valve, in the aerating circuit of liquid phase solenoid valve access filling machine.
7. one kind automatically terminates in gas transmission turbine pump the method for the phenomenon that gasifies, comprise basin, turbine pump and filling machine, turbine pump is connected with basin and filling machine with aerating pipeline respectively by liquid transport pipeline, it is characterized in that: between basin and turbine pump, be connected in series gas tank, in gas tank, liquid level detection device is set; Liquid level detection device detects that liquid level starts turbine pump when dropping to warning liquid level, and liquid is constantly made liquid level rise to discharge the gas in gas tank by the running of turbine pump from basin suction gas tank; Turbine pump is closed when liquid level detection device detects that liquid level rises to safety levels; Can form circulation loop by Liquid transfer to basin during turbine pump running, the gas of discharge can be collected in basin by pipeline.
8. a kind of method automatically terminating in gas transmission turbine pump the phenomenon that gasifies according to claim 7, is characterized in that: when liquid level detection device detects that liquid level rises to safety levels, time delay closed turbine pump after 30 ~ 60 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410540553.6A CN104481901B (en) | 2014-10-14 | 2014-10-14 | Gas transmission turbine pump gasification impair eliminating system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410540553.6A CN104481901B (en) | 2014-10-14 | 2014-10-14 | Gas transmission turbine pump gasification impair eliminating system and method |
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| Publication Number | Publication Date |
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| CN104481901A true CN104481901A (en) | 2015-04-01 |
| CN104481901B CN104481901B (en) | 2017-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410540553.6A Expired - Fee Related CN104481901B (en) | 2014-10-14 | 2014-10-14 | Gas transmission turbine pump gasification impair eliminating system and method |
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| JP2009019719A (en) * | 2007-07-12 | 2009-01-29 | Riido:Kk | Liquified petroleum gas filling device and liquified petroleum gas filling method |
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| CN202497954U (en) * | 2012-02-27 | 2012-10-24 | 周宁 | Automatic oil suction exhaust apparatus for centrifugal type oil purifier |
| KR20130065026A (en) * | 2011-12-09 | 2013-06-19 | 현대자동차주식회사 | Device for decreasing temperature of bombe by using latent heat in lpg vaporization and control method thereof |
| CN203114698U (en) * | 2013-03-04 | 2013-08-07 | 绿友机械集团股份有限公司 | Water supplementing device for centrifugal pump station unit |
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2014
- 2014-10-14 CN CN201410540553.6A patent/CN104481901B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009019719A (en) * | 2007-07-12 | 2009-01-29 | Riido:Kk | Liquified petroleum gas filling device and liquified petroleum gas filling method |
| CN201420949Y (en) * | 2009-04-09 | 2010-03-10 | 岳立武 | Pre-pump liquid storage constant pressure variable gas-filling system |
| CN202117969U (en) * | 2011-07-06 | 2012-01-18 | 中国石油天然气股份有限公司 | Protecting device of oil transportation centrifugal pump for removing gasification |
| KR20130065026A (en) * | 2011-12-09 | 2013-06-19 | 현대자동차주식회사 | Device for decreasing temperature of bombe by using latent heat in lpg vaporization and control method thereof |
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| CN104481901B (en) | 2017-02-08 |
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Effective date of registration: 20161212 Address after: 255000 Shandong city of Zibo province high tech Zone Four Baoshan Lutai Avenue West of juntun Village South 1500 meters Applicant after: SHANDONG HUAKE ELECTROMECHANICAL EQUIPMENT DEVELOPMENT Co.,Ltd. Address before: 255000 Shandong Province, Zibo City Development Zone No. 52 North Road (Advanced Manufacturing Industry Innovation Park No. 1 West) Zibo Huachuang gas equipment development Co. Ltd. Applicant before: ZIBO HUACHUANG GAS EQUIPMENT DEVELOPMENT Corp.,Ltd. |
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Granted publication date: 20170208 Termination date: 20211014 |