CN109681777A - A kind of unpowered pump of liquefied gas at low temp - Google Patents
A kind of unpowered pump of liquefied gas at low temp Download PDFInfo
- Publication number
- CN109681777A CN109681777A CN201910034950.9A CN201910034950A CN109681777A CN 109681777 A CN109681777 A CN 109681777A CN 201910034950 A CN201910034950 A CN 201910034950A CN 109681777 A CN109681777 A CN 109681777A
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- CN
- China
- Prior art keywords
- low
- temperature
- vessel
- valve
- low temperature
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/08—Pipe-line systems for liquids or viscous products
- F17D1/082—Pipe-line systems for liquids or viscous products for cold fluids, e.g. liquefied gas
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The present invention relates to a kind of unpowered pumps of liquefied gas at low temp.The top of upper low-temperature (low temperature) vessel is communicated by pipeline, automatic exhaust steam valve with gas recovery unit sealing, the upper lateral part of upper low-temperature (low temperature) vessel is communicated by pipeline, automatic liquid feed valve with cryogenic liquid storage tank sealing, the upper lateral part of upper low-temperature (low temperature) vessel is communicated by pipeline with the sealing of upper safety valve, the upper lateral part of upper low-temperature (low temperature) vessel is electrically connected with the controller by pipeline, upper pressure transmitter, and the automatic liquid feed valve, automatic exhaust steam valve are electrically connected with the controller respectively；The bottom of upper low-temperature (low temperature) vessel is communicated by pipeline, selfdraining valve with the sealing of lower low-temperature (low temperature) vessel, and selfdraining valve is electrically connected with the controller.The top of lower low-temperature (low temperature) vessel is communicated by pipeline with the sealing of lower safety valve, and the upper lateral part of lower low-temperature (low temperature) vessel is electrically connected by pipeline, lower pressure transmitter with the controller.The bottom of lower low-temperature (low temperature) vessel is communicated by pipeline, hand-operated valve with liquid equipment.Its structure is simple, does not have to motor, low energy consumption, long service life.
Description
Technical field
The present invention relates to a kind of cryogenic liquid pump, especially a kind of unpowered pump of liquefied gas at low temp.
Background technique
In the prior art, for the device to cryogenic liquid pressure-increasing unit usually using equipment such as immersed pump, plunger pumps,
Heavy-duty motor must be used, power consumption is big.Mechanical part has used a large amount of low temperature material, as cryogenic bearing, impeller,
Piston rod etc., equipment life is short, parts replacement is at high cost.
Summary of the invention
The shortcomings that in order to overcome the prior art, the present invention provide a kind of unpowered pump of liquefied gas at low temp, its structure is simple,
Without motor, low energy consumption, long service life.
The technical scheme adopted by the invention to solve the technical problem is that: the top of upper low-temperature (low temperature) vessel passes through pipeline, automatic
Exhaust valve is communicated with gas recovery unit sealing, and the upper lateral part of upper low-temperature (low temperature) vessel passes through pipeline, automatic liquid feed valve and cryogenic liquid
Storage tank seal communicates, and the upper lateral part of upper low-temperature (low temperature) vessel is communicated by pipeline with the sealing of upper safety valve, the upper lateral part of upper low-temperature (low temperature) vessel
Be electrically connected with the controller by pipeline, upper pressure transmitter, the automatic liquid feed valve, automatic exhaust steam valve respectively with the control
Device electrical connection processed, to control the Push And Release of automatic liquid feed valve, automatic exhaust steam valve；The bottom of upper low-temperature (low temperature) vessel by pipeline, from
Dynamic tapping valve is communicated with the sealing of lower low-temperature (low temperature) vessel, and selfdraining valve is electrically connected with the controller, to control opening for selfdraining valve
It closes.The top of lower low-temperature (low temperature) vessel is communicated by pipeline with the sealing of lower safety valve, and the upper lateral part of lower low-temperature (low temperature) vessel passes through pipeline, pushing
Power transmitter is electrically connected with the controller, and the bottom of lower low-temperature (low temperature) vessel is communicated by pipeline, hand-operated valve with liquid equipment.
The present invention have the advantage that 1), using upper low-temperature (low temperature) vessel pressure height change continue into low pressure liquid
In the higher lower low-temperature (low temperature) vessel of pressure, and the endothermic gasification in lower low-temperature (low temperature) vessel, arrive the pressure rise in lower low-temperature (low temperature) vessel
Rear liquid equipment uses pressure requirements, and forms externally lasting highly pressurised liquid stream；2), due to liquid oxygen, liquid nitrogen, liquid argon,
The vaporizing volume of liquefied natural gas is very bigger than all, so the every pressure for increasing 0.1Mpa of liquid need to only consume 1/600-1/800
Liquid, so discharge cryogenic gas amount it is seldom；After the cryogenic gas of discharge is heated by air temperature, use is micro-, small compressor adds
Pressure is all of so the present invention can achieve liquefied gas to empty zero-emission；3) maximum pressure that, can achieve is exactly
It is very convenient will to obtain highly pressurised liquid stream for the pressure voltage of first, second low-temperature (low temperature) vessel itself；4), structure is simple, not complicated machinery
Structure, maintenance amount is especially small in use, long service life, and eliminates the consumption of a large amount of dynamic power.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is first embodiment of the invention schematic diagram；
Fig. 2 is second embodiment of the invention schematic diagram；
Fig. 3 is third embodiment of the invention schematic diagram.
Specific embodiment
As shown in Figure 1, the top of upper low-temperature (low temperature) vessel 5 seals phase by pipeline, automatic exhaust steam valve 9 and gas recovery unit 10
Logical, the upper lateral part of upper low-temperature (low temperature) vessel 5 is communicated by pipeline, automatic liquid feed valve 8 with the sealing of cryogenic liquid storage tank 7, upper low-temperature (low temperature) vessel 5
Upper lateral part communicated by the sealing of pipeline and upper safety valve 6, the upper lateral part of upper low-temperature (low temperature) vessel 5 passes through pipeline, upper pressure transmitter
11 are electrically connected with controller 12, and the automatic liquid feed valve 8, automatic exhaust steam valve 9 are electrically connected with the controller 12 respectively, with
Just the Push And Release of automatic liquid feed valve 8, automatic exhaust steam valve 9 is controlled；The bottom of upper low-temperature (low temperature) vessel 5 by pipeline, selfdraining valve 4 with
The lower sealing of low-temperature (low temperature) vessel 2 communicates, and selfdraining valve 4 is electrically connected with controller 12, to control the switch of selfdraining valve 4.Under
The top of low-temperature (low temperature) vessel 2 is communicated by pipeline with the sealing of lower safety valve 3, and the upper lateral part of lower low-temperature (low temperature) vessel 2 passes through pipeline, lower pressure
Transmitter 13 is electrically connected with the controller 12, and liquid equipment 15 by pipeline, hand-operated valve 14 and is used in the bottom of lower low-temperature (low temperature) vessel 2
It communicates.
There is Cold-keeping Layer on the outer wall of the upper low-temperature (low temperature) vessel 5；There is heat absorbing sheet 1 on the outer wall of the lower low-temperature (low temperature) vessel 2.
As shown in Fig. 2, it is there are two the upper low-temperature (low temperature) vessels 5 or multiple, each it is respectively provided with certainly on upper low-temperature (low temperature) vessel 5
Dynamic liquid feed valve 8, automatic exhaust steam valve 9, selfdraining valve 4, upper safety valve 6, upper pressure transmitter 11, it is used in parallel.All is upper
Low-temperature (low temperature) vessel 5 can also share a selfdraining valve.Automatic liquid feed valve 8, automatic exhaust steam valve 9 on each upper low-temperature (low temperature) vessel 5,
The lower pressure transmitter 13 of selfdraining valve 4, upper pressure transmitter 11 and lower low-temperature (low temperature) vessel 2 is all electrically connected with controller 12.
Each upper low-temperature (low temperature) vessel 5 is installed on the top of lower low-temperature (low temperature) vessel 2.
As shown in figure 3, the automatic liquid feed valve 8, automatic exhaust steam valve 9, selfdraining valve 4 are replaced by combination valve 19, group
Valve 19 is closed to be mounted between low-temperature (low temperature) vessel 5 and lower low-temperature (low temperature) vessel 2.First group interface of the combination valve 19 is connected to cryogenic liquid
Storage tank 7 and upper low-temperature (low temperature) vessel 5, form unidirectional feed liquor access 17；Second group interface of the combination valve 19, which is connected to upper low temperature, to be held
Device 5 and lower low-temperature (low temperature) vessel 2, form two-way drain, exhaust channel 16；The third group interface of the combination valve 19 is connected to upper low temperature
Container 5 and gas recovery unit 10, form unidirectional exhaust channel 18；The control terminal of the combination valve 19 is electrically connected with controller 12
It connects.
Turn on pump step: 1), controller issues automatic exhaust steam valve 9 on instruction unpack on low-temperature (low temperature) vessel 5, opens low temperature again
Automatic liquid feed valve 8 on container 5 makes liquid full of upper low-temperature (low temperature) vessel 5；2), the automatic liquid feed valve 8 of low-temperature (low temperature) vessel 5 in closing, from
Dynamic exhaust valve 9；3), in opening 5 lower part of low-temperature (low temperature) vessel selfdraining valve 4, so that liquid is flowed into lower low temperature under gravity
In container 2, selfdraining valve 4 is closed after having flowed.Liquid endothermic gasification in lower low-temperature (low temperature) vessel 2, the pressure inside lower low-temperature (low temperature) vessel 2
Power rises；4), after closing selfdraining valve 4, automatic exhaust steam valve 9 is opened, when the pressure in upper low-temperature (low temperature) vessel 5 drops to storage tank
When below pressure, automatic liquid feed valve 8 in opening makes liquid full of upper low-temperature (low temperature) vessel 5.It is then shut off automatic liquid feed valve 8 and automatic
Exhaust valve 9；5) it, is again turned on selfdraining valve 4, keeps low-temperature (low temperature) vessel 5 equal with the pressure of lower low-temperature (low temperature) vessel 2, upper low temperature holds
The liquid of device 5 all flows into lower low-temperature (low temperature) vessel 2 in isobaric environment by the effect of gravity.Automatic row is closed after having flowed
Liquid valve 4；6) it, is again turned on automatic exhaust steam valve 9, when the pressure in upper low-temperature (low temperature) vessel 5 drops to pressure of storage tank or less, is opened certainly
Dynamic liquid feed valve 8, makes liquid full of upper low-temperature (low temperature) vessel 5, is then again switched off automatic liquid feed valve 8 and automatic exhaust steam valve 9.It is again turned on
Selfdraining valve 4, when upper low-temperature (low temperature) vessel 5 is equal with the pressure of lower low-temperature (low temperature) vessel 2, liquid flows into lower low-temperature (low temperature) vessel 2 by gravity；
7) it, so recycles, keeps the liquid in lower low-temperature (low temperature) vessel more and more, and keep certain pressure, can externally export a level pressure
The liquid flow of power, thus make continuously highly pressurised liquid enter rear liquid equipment, such as high pressure gasifier, liquid filler.
Termination of pumping step: closing automatic liquid feed valve 8 and selfdraining valve 4, empties lower low-temperature (low temperature) vessel 2, opens automatic exhaust steam valve
9, low-temperature (low temperature) vessel 5 in emptying, this pump stops working.
Instantly when the pressure of low-temperature (low temperature) vessel 2 is greater than the set value, the pressure of lower low-temperature (low temperature) vessel 2 will by its pressure transmitter 13
Signal is transferred to controller 12, and controller 12 can close automatic liquid feed valve 8, and open selfdraining valve 4 and automatic exhaust steam valve
9, the gas in lower low-temperature (low temperature) vessel 2 is discharged by upper low-temperature (low temperature) vessel 5, is allowed to pressure decline.Instantly under the pressure in low-temperature (low temperature) vessel 2
When dropping to less than or equal to pressure set points, selfdraining valve 4 and automatic exhaust steam valve 9 are closed.
During the work time, the pressure of upper low-temperature (low temperature) vessel 5 transmits a signal to controller 12 by upper pressure transmitter 11,
To monitor the pressure of upper low-temperature (low temperature) vessel 5, to control the opening and closing of automatic liquid feed valve 8 and automatic exhaust steam valve 9.
Output flow is adjusted by changing the volume of upper low-temperature (low temperature) vessel 5 and lower low-temperature (low temperature) vessel 2.
It is defeated to adjust by changing switching frequency and the time of automatic liquid feed valve 8, automatic exhaust steam valve 9 and selfdraining valve 4
Outflow.
Change maximum pressure of the invention by changing the pressure voltage of upper low-temperature (low temperature) vessel 5 and lower low-temperature (low temperature) vessel 2.
Claims (6)
1. a kind of unpowered pump of liquefied gas at low temp, it is characterised in that: the top of upper low-temperature (low temperature) vessel (5) passes through pipeline, automatic row
Air valve (9) is communicated with gas recovery unit (10) sealing, and the upper lateral part of upper low-temperature (low temperature) vessel (5) passes through pipeline, automatic liquid feed valve (8)
It being communicated with cryogenic liquid storage tank (7) sealing, the upper lateral part of upper low-temperature (low temperature) vessel (5) is communicated by pipeline with upper safety valve (6) sealing,
The upper lateral part of upper low-temperature (low temperature) vessel (5) is electrically connected by pipeline, upper pressure transmitter (11) with controller (12), it is described it is automatic into
Liquid valve (8), automatic exhaust steam valve (9) are electrically connected with the controller (12) respectively, to control automatic liquid feed valve (8), automatic
The Push And Release of exhaust valve (9)；The bottom of upper low-temperature (low temperature) vessel (5) is close by pipeline, selfdraining valve (4) and lower low-temperature (low temperature) vessel (2)
Envelope communicates, and selfdraining valve (4) is electrically connected with controller (12), to control the Push And Release of selfdraining valve (4).Lower low temperature holds
The top of device (2) is communicated by pipeline with the sealing of lower safety valve (3), and the upper lateral part of lower low-temperature (low temperature) vessel (2) passes through pipeline, lower pressure
Transmitter (13) is electrically connected with the controller (12), and the bottom of lower low-temperature (low temperature) vessel (2) by pipeline, hand-operated valve (14) and is used
Liquid equipment (15) communicates.
2. the unpowered pump of liquefied gas at low temp according to claim 1, it is characterised in that: the upper low-temperature (low temperature) vessel (5)
There is Cold-keeping Layer on outer wall；There is heat absorbing sheet (1) on the outer wall of the lower low-temperature (low temperature) vessel (2).
3. the unpowered pump of liquefied gas at low temp according to claim 1, it is characterised in that: the upper low-temperature (low temperature) vessel (5)
There are two or it is multiple, automatic liquid feed valve (8), automatic exhaust steam valve (9), automatic row are each respectively provided on upper low-temperature (low temperature) vessel (5)
Liquid valve (4), upper safety valve (6), upper pressure transmitter (11), it is used in parallel.
4. the unpowered pump of liquefied gas at low temp according to claim 3, it is characterised in that: all upper low-temperature (low temperature) vessels (5)
A selfdraining valve is shared, each the automatic liquid feed valve (8) on upper low-temperature (low temperature) vessel (5), automatic exhaust steam valve (9), automatic drain
The lower pressure transmitter (13) of valve (4), upper pressure transmitter (11) and lower low-temperature (low temperature) vessel (2) is all electrically connected with controller (12)
It connects, each upper low-temperature (low temperature) vessel (5) are installed on the top of lower low-temperature (low temperature) vessel (2).
5. the unpowered pump of liquefied gas at low temp according to claim 1, it is characterised in that: the automatic liquid feed valve (8),
Automatic exhaust steam valve (9), selfdraining valve (4) are replaced by combination valve (19), and combination valve (19) is mounted on low-temperature (low temperature) vessel (5) under
Between low-temperature (low temperature) vessel (2).
6. the unpowered pump of liquefied gas at low temp according to claim 5, it is characterised in that: the first of the combination valve (19)
Group interface is connected to cryogenic liquid storage tank (7) and upper low-temperature (low temperature) vessel (5), forms unidirectional feed liquor access (17)；The combination valve
(19) the second group interface is connected to upper low-temperature (low temperature) vessel (5) and lower low-temperature (low temperature) vessel (2), forms two-way drain, exhaust channel (16)；
The third group interface of the combination valve (19) is connected to upper low-temperature (low temperature) vessel (5) and gas recovery unit (10), forms unidirectional exhaust
Access (18)；The control terminal of the combination valve (19) is electrically connected with controller (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910034950.9A CN109681777A (en) | 2019-01-08 | 2019-01-08 | A kind of unpowered pump of liquefied gas at low temp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910034950.9A CN109681777A (en) | 2019-01-08 | 2019-01-08 | A kind of unpowered pump of liquefied gas at low temp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109681777A true CN109681777A (en) | 2019-04-26 |
Family
ID=66193212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910034950.9A Pending CN109681777A (en) | 2019-01-08 | 2019-01-08 | A kind of unpowered pump of liquefied gas at low temp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109681777A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10318499A (en) * | 1997-05-15 | 1998-12-04 | Ishikawajima Harima Heavy Ind Co Ltd | Delivery pump device in lng base |
| US20060222523A1 (en) * | 2004-12-17 | 2006-10-05 | Dominique Valentian | Compression-evaporation system for liquefied gas |
| CN1880831A (en) * | 2005-06-14 | 2006-12-20 | 蔚山化学株式会社 | Method of charging low temperature liquified gas |
| CN102389689A (en) * | 2011-10-09 | 2012-03-28 | 刘军 | Powerless low-temperature isobaric ammonia recovering method and isobaric ammonia recovering device |
| CN103180615A (en) * | 2010-10-29 | 2013-06-26 | 爱沃特株式会社 | Pump for cryogenic liquefied gas |
| CN103672394A (en) * | 2013-12-02 | 2014-03-26 | 青岛捷能高新技术有限责任公司 | Pump-free LNG gas-filling system and liquefied natural gas processing method |
| CN104006295A (en) * | 2014-04-28 | 2014-08-27 | 张夏炎 | Method and apparatus for displacement type pressure conveying of low-temperature liquefied gas |
| CN203892867U (en) * | 2014-06-17 | 2014-10-22 | 山西沁水新奥燃气有限公司 | Low-temperature liquid storage and supply system with low-temperature gas phase recycling function |
| CN105264281A (en) * | 2013-04-30 | 2016-01-20 | 克里奥斯塔股份有限公司 | Method and device for replenishing a supply of cryogenic liquid, notably of liquefied natural gas |
| CN106402643A (en) * | 2015-08-03 | 2017-02-15 | 张夏炎 | Air energy low-temperature liquefied gas non-pump filling system |
| CN108278482A (en) * | 2018-04-11 | 2018-07-13 | 青岛乐戈新能源科技有限公司 | A kind of liquefied gas at low temp charging system, methods for filling |
-
2019
- 2019-01-08 CN CN201910034950.9A patent/CN109681777A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10318499A (en) * | 1997-05-15 | 1998-12-04 | Ishikawajima Harima Heavy Ind Co Ltd | Delivery pump device in lng base |
| US20060222523A1 (en) * | 2004-12-17 | 2006-10-05 | Dominique Valentian | Compression-evaporation system for liquefied gas |
| CN1880831A (en) * | 2005-06-14 | 2006-12-20 | 蔚山化学株式会社 | Method of charging low temperature liquified gas |
| CN103180615A (en) * | 2010-10-29 | 2013-06-26 | 爱沃特株式会社 | Pump for cryogenic liquefied gas |
| CN102389689A (en) * | 2011-10-09 | 2012-03-28 | 刘军 | Powerless low-temperature isobaric ammonia recovering method and isobaric ammonia recovering device |
| CN105264281A (en) * | 2013-04-30 | 2016-01-20 | 克里奥斯塔股份有限公司 | Method and device for replenishing a supply of cryogenic liquid, notably of liquefied natural gas |
| CN103672394A (en) * | 2013-12-02 | 2014-03-26 | 青岛捷能高新技术有限责任公司 | Pump-free LNG gas-filling system and liquefied natural gas processing method |
| CN104006295A (en) * | 2014-04-28 | 2014-08-27 | 张夏炎 | Method and apparatus for displacement type pressure conveying of low-temperature liquefied gas |
| CN203892867U (en) * | 2014-06-17 | 2014-10-22 | 山西沁水新奥燃气有限公司 | Low-temperature liquid storage and supply system with low-temperature gas phase recycling function |
| CN106402643A (en) * | 2015-08-03 | 2017-02-15 | 张夏炎 | Air energy low-temperature liquefied gas non-pump filling system |
| CN108278482A (en) * | 2018-04-11 | 2018-07-13 | 青岛乐戈新能源科技有限公司 | A kind of liquefied gas at low temp charging system, methods for filling |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190426 |
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| RJ01 | Rejection of invention patent application after publication |