CN203771021U - Vacuumizing system with liner cyclic heating for interlayer of liquefied gas steel cylinder - Google Patents
Vacuumizing system with liner cyclic heating for interlayer of liquefied gas steel cylinder Download PDFInfo
- Publication number
- CN203771021U CN203771021U CN201420123894.9U CN201420123894U CN203771021U CN 203771021 U CN203771021 U CN 203771021U CN 201420123894 U CN201420123894 U CN 201420123894U CN 203771021 U CN203771021 U CN 203771021U
- Authority
- CN
- China
- Prior art keywords
- communicated
- natural gas
- liquefied natural
- gas bottle
- pipe
- 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.)
- Expired - Fee Related
Links
Abstract
The utility model provides a vacuumizing system with liner cyclic heating for an interlayer of a liquefied gas steel cylinder. The vacuumizing system comprises a vacuumizing device, a liquefied gas steel cylinder placing device and a liquefied gas steel cylinder inner heating device, wherein the liquefied gas steel cylinder inner heating device comprises a dry type oil-free inner heating circulating draught fan, a heat inlet main pipe, a heat discharging main pipe, a heat inlet branch pipe and a heat discharging branch pipe; an air outlet of the dry type oil-free inner heating circulating draught fan is communicated with the heat inlet main pipe; the heat inlet main pipe is also communicated with the heat inlet branch pipe; the heat inlet branch pipe is also communicated with a gas inlet of the liquefied gas steel cylinder to be heated; a gas outlet of the liquefied gas steel cylinder is also communicated with the heat discharging branch pipe; the heat discharging branch pipe is also communicated with the heat discharging main pipe; the heat discharging main pipe is also communicated with the gas inlet of the dry type oil-free inner heating circulating draught fan. According to the system, a drying room does not need to be used for carrying out continuous outer heating in a vacuumizing process; the vacuumizing effect and the production efficiency can be guaranteed; meanwhile, the manufacturing cost and the utilization cost can also be saved.
Description
Technical field
The utility model relates to a kind of pumped vacuum systems, the pumped vacuum systems that particularly a kind of interlayer of taking out liquefied natural gas bottle is used.
Background technique
In the document such as the NBS " GB 24159-2009 welded insulated gas cylinder " of Vehicular liquefied natural gas bottle and " cryogenic engineering " magazine the 6th phase in 2007 " cryogenic insulated cylinder application present situation and key technology both at home and abroad ", all mentioned, degree of vacuum data in liquefied natural gas bottle interlayer are important technology data for liquefied natural gas bottle, but how to ensure in process of production such data, and how to improve the output of liquefied natural gas bottle, the quality of product of guarantee liquefied natural gas bottle, still do not have at present pertinent literature to record.
The liquefied natural gas bottle manufacturing enterprise of most is all that the production method of applying mechanically industry bottle is made, this method has following several places shortcoming: the one, and mode of heating in adopting if simple, have the inhomogeneous phenomenon of inner bag heating-up temperature of liquefied natural gas bottle, and then affect vacuumizing effect, cause unstable product quality; The 2nd, because the effect of mode of heating in simple is unstable, adopt sometimes external heat technique, but simple external heat technique has, power consumption is excessive, the problem of serious waste of resources; The 3rd, traditional interlayer vacuum-pumping system floor space is large, so production site utilization ratio is low; The 4th, traditional interlayer vacuum-pumping system complicated operation, easily causes operator to injure unexpectedly; The 5th, the pipeline of traditional interlayer vacuum-pumping system is long, can cause the pumpdown time long (operating time is long); The 6th, reasonable not due to the structure of traditional interlayer vacuum-pumping system, so cause liquefied natural gas bottle handling difficulty.
In order to overcome the problems referred to above, notice of authorization number provides a kind of pumped vacuum systems for the Chinese patent of CN203190030U, this pumped vacuum systems has overcome the problems referred to above, still, and owing to throwing away and being in the budding stage in the research and development of inner bag heating tech at that time, heating in cannot realizing separately, so be provided with drying room, and the cost of drying room is very high, user cost is also very high, energy consumption aspect has also reached 6 times of the own energy consumption of pumped vacuum systems, is unfavorable for promoting.
Model utility content
The purpose of this utility model is to provide the hydronic liquefied natural gas bottle interlayer vacuum-pumping of a kind of band inner bag system, solve that existing pumped vacuum systems cost is too high, user cost is high, also relatively large technical problem of power consumption.
For achieving the above object, the utility model adopts following technological scheme: the hydronic liquefied natural gas bottle interlayer vacuum-pumping of a kind of band inner bag system, include vacuum pumping device, liquefied natural gas bottle placing device and liquefied natural gas bottle inner heating device, it is characterized in that: described liquefied natural gas bottle inner heating device includes dry type without Heating Cyclic blower fan in oil, enter heat supervisor, heat extraction supervisor, enter hot leg pipe and heat extraction arm, wherein dry type without the delivery pressure of Heating Cyclic blower fan in oil more than 70kpa, heatproof temperature is more than 350 degree, dry type without oil in Heating Cyclic blower fan exhaust outlet with enter heat be responsible for be communicated with, enter heat supervisor again with enter hot leg pipe and be communicated with, entering hot leg pipe is communicated with the suction port of liquefied natural gas bottle to be heated again, the air outlet of liquefied natural gas bottle is communicated with heat extraction arm again, heat extraction arm is communicated with heat extraction supervisor again, heat extraction supervisor is communicated with without the suction port of Heating Cyclic blower fan in oil with dry type again.
Described vacuum pumping device includes main vacuum pump, holding pump, prime pipe A, front step valve, prime pipe B, front two-stage vacuum pump, previous stage vacuum pump, takes out pipe B in advance, takes out valve in advance, takes out pipe A, threeway main valve, water-cooled trap, liquid nitrogen cold trap in advance, vacuumizes supervisor, Pneumatic corner valve and vacuumize arm.
The described supervisor of vacuumizing is provided with ionization [vacuum, resistance vacuum gauge and inflated with nitrogen angle valve, and vacuumize supervisor by Pneumatic corner valve with vacuumize arm and be communicated with, vacuumize arm and be communicated with the interlayer of liquefied natural gas bottle by sealing frock up for safekeeping again, vacuumize supervisor and be also communicated with first interface of threeway main valve by liquid nitrogen cold trap.
Second interface of described threeway main valve with take out in advance pipe A and be communicated with, take out in advance pipe A and manage B and be communicated with taking out in advance by taking out in advance valve again, take out in advance and manage B and be communicated with pre-pump group again.
The 3rd interface of described threeway main valve is communicated with the inlet end of main vacuum pump by water-cooled trap, and the outlet side of main vacuum pump is communicated with prime pipe A by holding pump, and prime pipe A is communicated with prime pipe B by front step valve again, and prime pipe B manages B and is communicated with taking out in advance again.
Describedly vacuumize supervisor and can be in-line pipeline.
Described Pneumatic corner valve can be Pneumatic corner valve open in usual.
Described Pneumatic corner valve can be arranged on the upside and the left and right sides that vacuumize supervisor.
Described liquefied natural gas bottle placing device can be and is arranged on the frame bottle dolly that makes the horizontal placement of liquefied natural gas bottle that vacuumizes supervisor both sides.
Described bottle dolly can be placed in orbit.
Compared with prior art the utlity model has following characteristics and beneficial effect: the utility model need to not utilize drying room to continue external heat in vacuumizing, user can select batch gas cylinder to be directly connected in system, can ensure that vacuumizing effect is with manufacturing efficiency (compared with the Chinese patent that is CN203190030U with notice of authorization number, can reach identical vacuumizing effect and manufacturing efficiency) prerequisite under, save manufacture cost and the user cost of great number.Compared with the Chinese patent that the utility model is CN203190030U with notice of authorization number, manufacture instinct and reduce by 1/4th, user cost can reduce by 60～80%.
Specifically, notice of authorization number be the Chinese patent of CN203190030U in practical operation experiment, find its technological deficiency: work or switch operating when 1, cannot realizing gas cylinder interlayer replacing process and inner bag heating process; 2, inflation pressure deficiency causes the inner bag efficiency of heating surface low, to such an extent as to must rely on outer drying room to heat to do auxiliary heating, so manufacture cost is very high; 3, owing to all using nitrogen, so user cost also increases a lot.And the utility model has improved liquefied natural gas bottle inner heating device, so overcome these shortcomings.
Liquefied natural gas bottle inner heating device in the utility model is a kind of circulation inner heating device, this device adopted high blast, high temperature resistant and for dry type without oily dry type without oil in Heating Cyclic blower fan, the benefit of doing is like this: first, and work or switch operating when can realizing gas cylinder interlayer replacing process and inner bag heating process; Secondly, dry type can continue to provide clean without oily circulating air without Heating Cyclic blower fan in oil, can make hot blast blow to fully liquefied natural gas bottle inner bag inside, and discharged by the air outlet of liquefied natural gas bottle, then come back to dry type and do secondary heating supercharging without the suction port of Heating Cyclic blower fan in oil, so ensured the inflation pressure (70kPa blast) of stable and high numerical value, improved the inner bag efficiency of heating surface, reduce energy consumption, carried out external heat thereby can not re-use drying room; Again, owing to having avoided cylinder liner hot gas to be discharged into space outerpace, so in summer operation system, can not have influence on the temperature of operating environment, also ensured operator's safety, the quick aging of having avoided peripheral equipment to cause due to high temperature; User cost finally, do not re-use nitrogen and does interior heating process, so can also further reduce a lot.
The circulation inner heating device of mentioning in the utility model has three features simultaneously, the one, can reach blast more than 70kPa, the 2nd, sustainablely provide clean without oily circulating air, the 3rd, pneumatic power source (being that dry type is without Heating Cyclic blower fan in oil) can tolerate and continues the high temperature of 350 degree and turn round for 24 hours.These three features are that traditional nitrogen heater can not be accomplished simultaneously, we have just found (it should be noted that of circulation inner heating device can simultaneously with these three features after having analyzed, studied, test many times, we are also after analyzing, study, tested many times, just find to only have in the time that heating in gas cylinder can meet this three features simultaneously, just can give full play to the effect of interior heating, just can reach the object of removing drying room).
In addition, conventionally the overall time to gas cylinder vacuum pumping technique (comprising pumpdown time and the time of doing technique) is approximately 5-7 days to the Chinese patent that notice of authorization number is CN203190030U, in actual tests, there is not significant change and slightly reduce in the overall time of the utility model vacuum pumping technique, the reject rate that gas cylinder is produced there is no significant change yet and slightly reduce (also have by change gas cylinder material or part early stage manufacturing process and by the experiment case study of the overall time shorten to 3 of vacuum pumping technique day, but these do not belong to technology category of the present utility model, therefore here do not elaborate).
The supervisor that vacuumizes in the utility model above uses Pneumatic corner valve open in usual, because pumped vacuum systems is almost work in 24 hours in the middle of real work, so such design is in order not need the power supply air feed lasting to Pneumatic corner valve the system works time, extend the working life of Pneumatic corner valve, and this Pneumatic corner valve is a key control switch, greatly reduce direct labor's misoperation risk.
The Pneumatic corner valve vacuumizing on supervisor in the utility model is Three-bearing layout (vacuumizing supervisor's upside and the left and right sides), can ensure so the directly corresponding air outlet of being taken out workpiece of suction port of each Pneumatic corner valve, make to connect vacuumizing arm and can not producing obvious bending of two mouths, avoided unobstructed not the caused inefficiency that vacuumizes of system pipeline.
In ensureing to facilitate regular job and repair and maintenance, vacuum pumping device in the utility model has been accomplished compact structure, when having improved vacuum pumping device working efficiency, reduce the floor space of vacuum pumping device, for user has brought the input-output ratio of complex optimum.
Structure of the present utility model compacter (can improve system effectiveness and reduce floor space), automaticity strengthens (can reduce human error and reduce the amount of labour) gradually, is ensureing, on the basis that system effectiveness is constant and promote, to have reduced cost.
The utility model is modular designs, so each part can user be purchased and install voluntarily.
The laminated vacuum of traditional liquefied natural gas bottle extracts in technique, liquefied natural gas bottle is vertical placement all, and car bottle support in the utility model makes the horizontal placement of liquefied natural gas bottle, after the horizontal placement of liquefied natural gas bottle, further improve the effect vacuumizing of liquefied natural gas bottle.
Now also there is the system of horizontal placement gas cylinder, but and our this technology is compared, cause vacuumizing inefficiency because angle valve layout is unreasonable, and be all manual angle valve, instead of Pneumatic corner valve in the application, can very loaded down with trivial details and easy operate miss in operation, operate miss meeting causes gas cylinder need to again do the vacuum pumping technique of one-period.
Brief description of the drawings
Below in conjunction with accompanying drawing, the utility model is described in more detail.
Fig. 1 is main TV structure schematic diagram of the present utility model.
Fig. 2 is schematic top plan view of the present utility model.
Fig. 3 is that schematic diagram is looked on the right side of the present utility model.
Reference character: 1-seals frock up for safekeeping, 2-vacuumizes arm, 3-threeway main valve, 4-takes out valve in advance, 5-enters hot leg pipe, 6-heat extraction arm, 7-Pneumatic corner valve, 8-water-cooled trap, 9-takes out pipe B in advance, 10-main vacuum pump, 11-two-way circulating water machine, 12-dry type is without Heating Cyclic blower fan in oil, the pre-pump group of 13-, 14-basis, 15-track, 16-liquefied natural gas bottle, 17-inflated with nitrogen angle valve, 18-ionization [vacuum, 19-resistance vacuum gauge, 20-vacuumizes supervisor, 21-enters heat supervisor, 22-liquid nitrogen cold trap, 23-heat extraction supervisor, 24-takes out pipe A in advance, 25-holding pump, 26-control cabinet, 27-frame bottle dolly, step valve before 28-, 29-prime pipe A, 30-prime pipe B.
Embodiment
Embodiment is referring to shown in Fig. 1-3, the hydronic liquefied natural gas bottle interlayer vacuum-pumping of this band inner bag system, include vacuum pumping device, liquefied natural gas bottle placing device and liquefied natural gas bottle inner heating device, comprise in addition and control the control cabinet 26 that whole pumped vacuum systems work is used.
Described liquefied natural gas bottle inner heating device includes dry type without Heating Cyclic blower fan 12 in oil, enter heat supervisor 21, heat extraction supervisor 23, enter hot leg pipe 5 and heat extraction arm 6, wherein dry type without the delivery pressure of Heating Cyclic blower fan 12 in oil more than 70kpa, heatproof temperature is more than 350 degree, dry type without the exhaust outlet of Heating Cyclic blower fan 12 in oil with enter heat and be responsible for and 21 be communicated with, enter heat supervisor 21 again with enter hot leg pipe 5 and be communicated with, entering hot leg pipe 5 is communicated with the suction port of liquefied natural gas bottle 16 to be heated again, the air outlet of liquefied natural gas bottle 16 is communicated with heat extraction arm 6 again, heat extraction arm 6 is communicated with heat extraction supervisor 23 again, heat extraction supervisor 23 is communicated with without the suction port of Heating Cyclic blower fan 12 in oil with dry type again.
Described vacuum pumping device includes main vacuum pump 10, holding pump 25, prime pipe A29, front step valve 28, prime pipe B30, front two-stage vacuum pump 13, previous stage vacuum pump 14, takes out pipe B9 in advance, takes out valve 4 in advance, takes out pipe A24, threeway main valve 3, water-cooled trap 8, liquid nitrogen cold trap 22 in advance, vacuumizes supervisor 20, Pneumatic corner valve 7 and vacuumize arm 2.Described main vacuum pump 10 can be diffusion pump or molecular pump, and is undertaken cooling by two-way circulating water machine 11.
Describedly vacuumize supervisor and 20 be provided with ionization [vacuum 18, resistance vacuum gauge 19 and inflated with nitrogen angle valve 17, and vacuumize supervisor 20 by Pneumatic corner valve 7 with vacuumize arm 2 and be communicated with, vacuumize arm 2 and be communicated with the interlayer of liquefied natural gas bottle by sealing frock 1 up for safekeeping again, vacuumize supervisor 20 and be also communicated with first interface of threeway main valve 3 by liquid nitrogen cold trap 22;
Second interface of described threeway main valve 3 with take out in advance pipe A24 and be communicated with, take out in advance pipe A24 and manage B9 and be communicated with taking out in advance by taking out in advance valve 4 again, take out in advance and manage B9 and be communicated with pre-pump group 13 again.Described pre-pump group 13 comprises front two-stage vacuum pump and previous stage vacuum pump, previous stage vacuum pump is sliding vane rotary pump or slide valve pump, front two-stage vacuum pump is Roots pump, the inlet end of previous stage vacuum pump is communicated with the outlet side of front two-stage vacuum pump, the inlet end of front two-stage vacuum pump again with take out in advance pipe B9 be communicated with.
The 3rd interface of described threeway main valve 3 is communicated with the inlet end of main vacuum pump 10 by water-cooled trap 8, the outlet side of main vacuum pump 10 is communicated with prime pipe A29 by holding pump 25, prime pipe A29 is communicated with prime pipe B30 by front step valve 28 again, prime pipe B30 again with take out in advance pipe B9 be communicated with.
Described liquefied natural gas bottle placing device is to be arranged on the frame bottle dolly 27 that makes the horizontal placement of liquefied natural gas bottle that vacuumizes supervisor 20 both sides, and frame bottle dolly 27 is placed on track 15.
In the present embodiment, vacuumize supervisor 20 for in-line pipeline.Pneumatic corner valve 7 is Pneumatic corner valve open in usual, and Pneumatic corner valve 7 is arranged on the upside and the left and right sides that vacuumize supervisor 20.
In the present embodiment, the utility model adopts professional electric control system control, it is control cabinet 26, described holding pump 25 is used for being connected with the detection device in electric control system, electric control system control can accomplish that left unguarded just completes all work of bleeding, and has realized the Automatic Control of the vacuum drawn technique of liquefied natural gas bottle interlayer.
Using method with the hydronic liquefied natural gas bottle interlayer vacuum-pumping of inner bag system:
Step 1, by sealing frock 1 up for safekeeping, being communicated with the interlayer of liquefied natural gas bottle 16 vacuumizing arm 2, be connected on the suction port of liquefied natural gas bottle 16 entering hot leg pipe 5, heat extraction arm 6 is connected on the air outlet of liquefied natural gas bottle 16.
Step 2, start pre-pump group 13 vacuum pumping device is done to forvacuum, start dry type and without Heating Cyclic blower fan 12 in oil, liquefied natural gas bottle 16 is heated.
After step 3, forvacuum, open the inflated with nitrogen angle valve 17 that vacuumizes supervisor's 20 ends, pass into clean high temperature nitrogen, do nitrogen replacement technique, in the time that nitrogen pressure reaches 0.8bar, re-start forvacuum, 6 to 9 times repeatedly.The benefit that adopts this step is the aqueous vapor molecule in purgative gas bottle clip layer, reduces the outgassing rate of gas cylinder interlayer, has ensured that the stable of gas cylinder interlayer vacuumizes.
Step 4, nitrogen replacement technique be complete, and again forvacuum complete, close after the inflated with nitrogen angle valve 17 that vacuumizes supervisor's 20 ends, open main vacuum pump 10, and be interrupted switch threeway main valve 3 according to the stable case of degree of vacuum.
Step 5, in the time that LNG Liquefied natural gas bottle closure degree of vacuum reaches sealed knot standard, open liquid nitrogen cold trap 22, consolidate for the last time degree of vacuum, then sealed knot liquefied natural gas bottle, close the hydronic liquefied natural gas bottle interlayer vacuum-pumping of band inner bag system, once-through operation technique completes.
Claims (7)
1. the hydronic liquefied natural gas bottle interlayer vacuum-pumping of a band inner bag system, include vacuum pumping device, liquefied natural gas bottle placing device and liquefied natural gas bottle inner heating device, it is characterized in that: described liquefied natural gas bottle inner heating device includes dry type without Heating Cyclic blower fan (12) in oil, enter heat supervisor (21), heat extraction supervisor (23), enter hot leg pipe (5) and heat extraction arm (6), wherein dry type without the delivery pressure of Heating Cyclic blower fan (12) in oil more than 70kpa, heatproof temperature is more than 350 degree, dry type without oil in Heating Cyclic blower fan (12) exhaust outlet with enter heat be responsible for (21) be communicated with, enter heat supervisor (21) again with enter hot leg pipe (5) and be communicated with, entering hot leg pipe (5) is communicated with the suction port of liquefied natural gas bottle (16) to be heated again, the air outlet of liquefied natural gas bottle (16) is communicated with heat extraction arm (6) again, heat extraction arm (6) is communicated with heat extraction supervisor (23) again, heat extraction supervisor (23) is communicated with without the suction port of Heating Cyclic blower fan (12) in oil with dry type again.
2. the hydronic liquefied natural gas bottle interlayer vacuum-pumping of band inner bag according to claim 1 system, is characterized in that: described vacuum pumping device includes main vacuum pump (10), holding pump (25), prime pipe A(29), front step valve (28), prime pipe B(30), front two-stage vacuum pump (13), previous stage vacuum pump (14), take out pipe B(9 in advance), take out valve (4) in advance, take out pipe A(24 in advance), threeway main valve (3), water-cooled trap (8), liquid nitrogen cold trap (22), vacuumize supervisor (20), Pneumatic corner valve (7) and vacuumize arm (2);
Describedly vacuumize supervisor (20) and be provided with ionization [vacuum (18), resistance vacuum gauge (19) and inflated with nitrogen angle valve (17), and vacuumize supervisor (20) by Pneumatic corner valve (7) with vacuumize arm (2) and be communicated with, vacuumize arm (2) and be communicated with the interlayer of liquefied natural gas bottle by sealing frock (1) up for safekeeping again, vacuumize supervisor (20) and be also communicated with first interface of threeway main valve (3) by liquid nitrogen cold trap (22);
Second interface of described threeway main valve (3) with take out in advance pipe A(24) is communicated with, take out in advance pipe A(24) again by take out in advance valve (4) with take out in advance manage B(9) be communicated with, take out in advance and manage B(9) be communicated with pre-pump group (13) again;
The 3rd interface of described threeway main valve (3) is communicated with the inlet end of main vacuum pump (10) by water-cooled trap (8), the outlet side of main vacuum pump (10) is by holding pump (25) and prime pipe A(29) be communicated with, prime pipe A(29) again by front step valve (28) and prime pipe B(30) be communicated with prime pipe B(30) and again with take out in advance pipe B(9) be communicated with.
3. the hydronic liquefied natural gas bottle interlayer vacuum-pumping of band inner bag according to claim 2 system, is characterized in that: described in vacuumize supervisor (20) for in-line pipeline.
4. the hydronic liquefied natural gas bottle interlayer vacuum-pumping of band inner bag according to claim 2 system, is characterized in that: described Pneumatic corner valve (7) is Pneumatic corner valve open in usual.
5. the hydronic liquefied natural gas bottle interlayer vacuum-pumping of band inner bag according to claim 2 system, is characterized in that: described Pneumatic corner valve (7) is arranged on the upside and the left and right sides that vacuumize supervisor (20).
6. the hydronic liquefied natural gas bottle interlayer vacuum-pumping of band inner bag according to claim 1 system, is characterized in that: described liquefied natural gas bottle placing device is for being arranged on the frame bottle dolly (27) that makes the horizontal placement of liquefied natural gas bottle that vacuumizes supervisor (20) both sides.
7. the hydronic liquefied natural gas bottle interlayer vacuum-pumping of band inner bag according to claim 6 system, is characterized in that: described bottle dolly (27) is placed on track (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420123894.9U CN203771021U (en) | 2014-03-19 | 2014-03-19 | Vacuumizing system with liner cyclic heating for interlayer of liquefied gas steel cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420123894.9U CN203771021U (en) | 2014-03-19 | 2014-03-19 | Vacuumizing system with liner cyclic heating for interlayer of liquefied gas steel cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203771021U true CN203771021U (en) | 2014-08-13 |
Family
ID=51288212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420123894.9U Expired - Fee Related CN203771021U (en) | 2014-03-19 | 2014-03-19 | Vacuumizing system with liner cyclic heating for interlayer of liquefied gas steel cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203771021U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103822085A (en) * | 2014-03-19 | 2014-05-28 | 北京华诚浩达真空空压设备有限公司 | Liquefied natural gas bottle sandwiching vacuum-pumping system and method with function of circularly heating inner container |
| CN107327696A (en) * | 2017-08-10 | 2017-11-07 | 丹阳市方蓝气体设备有限公司 | Platform-type green charging system |
-
2014
- 2014-03-19 CN CN201420123894.9U patent/CN203771021U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103822085A (en) * | 2014-03-19 | 2014-05-28 | 北京华诚浩达真空空压设备有限公司 | Liquefied natural gas bottle sandwiching vacuum-pumping system and method with function of circularly heating inner container |
| CN103822085B (en) * | 2014-03-19 | 2016-01-13 | 北京华诚浩达真空空压设备有限公司 | Band inner bag hydronic liquefied natural gas bottle interlayer vacuum-pumping system and method |
| CN107327696A (en) * | 2017-08-10 | 2017-11-07 | 丹阳市方蓝气体设备有限公司 | Platform-type green charging system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103822085B (en) | Band inner bag hydronic liquefied natural gas bottle interlayer vacuum-pumping system and method | |
| CN105817123A (en) | Compressed air deep-drying device and method capable of adjusting pressure dew point | |
| CN203771021U (en) | Vacuumizing system with liner cyclic heating for interlayer of liquefied gas steel cylinder | |
| CN201180900Y (en) | High-efficiency air suction heating mechanism in low-temperature liquid tank interlayer evacuation course | |
| CN204421438U (en) | Outdoor machine of air-conditioner refrigerant filling system | |
| CN202014542U (en) | Ethylene desorption machine for controlled-atmosphere storage room | |
| CN203785377U (en) | Vacuum drying device for wood | |
| CN205731282U (en) | A kind of molecular sieve system of air separation plant | |
| CN204388548U (en) | The gas-powered Analysis of Heat Pump Drying System in a kind of natural pond | |
| CN203190030U (en) | Vacuumizing system for horizontal type automotive liquefied natural gas bottle interlayer | |
| CN204126853U (en) | Residual heat of air compressor reclaims unit waterway structure | |
| CN203443321U (en) | High-vacuum sintering furnace | |
| CN203310084U (en) | High-temperature air source heat pump water heater | |
| CN209116639U (en) | A kind of air accumulator vacuum dryer | |
| CN104296524A (en) | A high vacuum sintering furnace | |
| CN204275526U (en) | High-efficiency energy-saving vacuum station | |
| CN209318719U (en) | A kind of device of dewaxing device transformation | |
| CN202605353U (en) | Sterilizer having quick cooling function and provided with steam generator | |
| CN203824201U (en) | Miniature energy-saving and environmentally-friendly fruit and vegetable fresh-keeping storehouse | |
| CN203874649U (en) | Renewable energy-saving compressed air freeze-drying system | |
| CN203549369U (en) | Low-temperature insulating gas bottle vacuumizing system | |
| CN207662228U (en) | The energy-saving emission-reducing apparatus of refrigeration equipment | |
| CN206334364U (en) | Enclosed compression heat pump vapo(u)rization system | |
| CN201681782U (en) | Energy-efficient lamp vacuum pump free high vacuum exhaust system | |
| CN205316904U (en) | Air can environmental protection drying -machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140813 Termination date: 20170319 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |