CN105909969A - Zero-emission filling device for cryogenic liquid tank car and filling method of zero-emission filling device - Google Patents
Zero-emission filling device for cryogenic liquid tank car and filling method of zero-emission filling device Download PDFInfo
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- CN105909969A CN105909969A CN201610441635.4A CN201610441635A CN105909969A CN 105909969 A CN105909969 A CN 105909969A CN 201610441635 A CN201610441635 A CN 201610441635A CN 105909969 A CN105909969 A CN 105909969A
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- Prior art keywords
- cryogenic liquid
- cryogenic
- valve
- liquid pump
- outlet
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
- F17C5/02—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with liquefied gases
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/04—Arrangement or mounting of valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/04—Indicating or measuring of parameters as input values
- F17C2250/0404—Parameters indicated or measured
- F17C2250/043—Pressure
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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
A zero-emission filling device for a cryogenic liquid tank car mainly comprises a common heat insulation cryogenic liquid storage vat, a cryogenic liquid pump and a cryogenic valve, wherein the outlet of the cryogenic liquid pump is connected with the tank car by an adapter pipe and the cryogenic valve, and the inlet of the cryogenic liquid pump is connected with the storage vat by a liquid inlet connecting pipe; and a return pipe with a backflow cryogenic globe valve is connected in series with the adapter pipe and also connected with the storage vat. A filling method comprises the following steps: (a) pre-cooling the cryogenic liquid pump: the backflow cryogenic globe valve is fully opened, a liquid inlet valve is gradually opened wide, at the moment, the cryogenic liquid pump starts to be pre-cooled, after pre-cooling is conducted for a period of time, an outlet blow through valve is slightly opened, and when continuous liquid is sprayed out from the outlet of the outlet blow through valve, the cryogenic liquid pump is quite cold; (c) starting up the cryogenic liquid pump, and after pressure rise, controlling the outlet pressure of the cryogenic liquid pump to be 2-3 bar higher than the pressure of the storage vat; (d) opening a tank car liquid inlet valve step by step, at the same time, turning down the backflow cryogenic globe valve, and controlling after pressure of the cryogenic liquid pump till the backflow cryogenic globe valve is fully closed; and (e) after finish of filling, stopping pumping.
Description
Technical field
The present invention relates to zero-emission charging device and the methods for filling of a kind of cryogenic liquid tank lorry, it is adaptable to tank car goes user to unload and returns to the situation that the inside residual pressure is higher after liquid production factory, belongs to cryogenic liquid tank lorry and fills technical field.
Background technology
The production of cryogenic liquid need to consume substantial amounts of raw material and electric energy, and cost is the highest；Therefore reduce the discharge in cryogenic liquid storage and filling process, can obviously reduce the sale cost of transportation of cryogenic liquid；
Cryogenic liquid manufacturer produces liquid entrance conventional insulation cryogenic liquid tank and stores, after being pressurizeed by cryogenic liquid pump, liquid is filled in tank car, tank car reaches unload at user, user causes its storage pressure the highest with atmospheric pressure height, tank car is by allowing tank car pressure to 2-3bar higher than user storage pressure to guarantee quickly to unload from supercharging, after having unloaded, remaining a small amount of liquid and middle cryogenic gas body in tank car, last tank car returns production plant and again fills liquid；
Traditional technique that fills is to be emitted by medium pressure gas in tank car, reduce tank car pressure as far as possible, then tank car is entered after liquid self-flowing passes through cryogenic liquid pump in liquid storage vessel, now cryogenic liquid pump also obtains pre-cooling, after pre-cooling thoroughly, restart cryogenic liquid pump quickly fill in tank car, be then shut off used during tank car emptying valve；This technique that fills can cause the residual cryogenic gas in tank car to discharge in a large number, extremely wastes, the sale cost of transportation of liquid can be caused to increase.
Summary of the invention
It is an object of the invention to the deficiency overcoming prior art to exist, and provide a kind of simple in construction, safe and reliable, the discharge of fluid product can be reduced, can effectively reduce zero-emission charging device and the methods for filling of the cryogenic liquid tank lorry of cryogenic liquid selling cost.
It is an object of the invention to complete by following technical solution: the zero-emission charging device of a kind of cryogenic liquid tank lorry, it mainly includes conventional insulation cryogenic liquid tank, cryogenic liquid pump, Subzero valve；Described cryogenic liquid delivery side of pump connects tank car by adapter and Subzero valve, and the import of this cryogenic liquid pump is connected to storage tank by feed liquor connecting tube；A described adapter piece return duct with refluxed cryogenic stop valve of upper concatenation, and it is connected to storage tank.
As preferably: on the discharge connection of described cryogenic liquid pump, be positioned at return duct concatenation point both sides be separately installed with an outlet non-return valve and outlet shutoff valve, it is provided with on the feed tube of described tank car between tank car liquid feed valve, and described feed tube with adapter and is provided with convenient for the two pipes pipe connection mechanism being connected；It is also associated with a liquid feed valve in the inlet side feed liquor connecting tube of described cryogenic liquid pump；An outlet blow-off pipe with outlet blow through valve also it is serially connected with in adapter outside cryogenic liquid delivery side of pump.
The methods for filling of a kind of zero-emission charging device utilizing described cryogenic liquid tank lorry, described methods for filling comprises the steps:
A), pre-cooling cryogenic liquid pump: standard-sized sheet refluxed cryogenic stop valve, progressively open big liquid feed valve, now cryogenic liquid pump starts pre-cooling, after pre-cooling a period of time, crack outlet blow through valve, in time exporting blow through valve outlet and have continuous liquid to spray, represents that cryogenic liquid pump is the coldest；
C, startup cryogenic liquid pump, after playing pressure, control cryogenic liquid pump discharge pressure more than storage pressure at 2-3bar；
D, progressively opening tank car liquid feed valve, turn down refluxed cryogenic stop valve simultaneously, after controlling cryogenic liquid pump, pressure is until refluxed cryogenic stop valve is fully closed；
E, fill end after, termination of pumping.
The present invention have simple in construction, safe and reliable, the discharge of fluid product can be reduced, can effectively reduce the features such as cryogenic liquid selling cost.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of this technique.
Detailed description of the invention
Below in conjunction with Fig. 1, the present invention will be described in detail: shown in Fig. 1, the zero-emission charging device of a kind of cryogenic liquid tank lorry of the present invention, and it mainly includes conventional insulation cryogenic liquid tank SV, cryogenic liquid pump LP, Subzero valve；The outlet of described cryogenic liquid pump LP connects tank car SC by adapter 1 and Subzero valve, and the import of this cryogenic liquid pump LP is connected to storage tank SV by feed liquor connecting tube 2；Concatenate a return duct 3 with refluxed cryogenic stop valve V4 in described adapter 1, and be connected to storage tank SV.
Shown in figure, belonging to cryogenic liquid pump LP discharge connection 1 on, be positioned at return duct 3 concatenation point both sides be separately installed with an outlet non-return valve V2 and outlet shutoff valve V3, it is provided with tank car liquid feed valve V5 on the feed tube 4 of described tank car SC, and is provided with convenient for the two pipes pipe connection mechanism C being connected between described feed tube 4 with adapter 1；It is also associated with a liquid feed valve V1 in the inlet side feed liquor connecting tube 2 of described cryogenic liquid pump LP；An outlet blow-off pipe 5 with outlet blow through valve V6 also it is serially connected with in adapter 1 outside the outlet of cryogenic liquid pump LP.
The methods for filling of a kind of zero-emission charging device utilizing described cryogenic liquid tank lorry, described methods for filling comprises the steps:
A), pre-cooling cryogenic liquid pump LP: standard-sized sheet refluxed cryogenic stop valve V4, progressively open big liquid feed valve V1, now cryogenic liquid pump LP starts pre-cooling, after pre-cooling a period of time, crack outlet blow through valve V6, in time exporting blow through valve V6 outlet and have continuous liquid to spray, represents that cryogenic liquid pump LP is the coldest；
C, startup cryogenic liquid pump LP, after playing pressure, control cryogenic liquid pump LP outlet pressure P1 more than storage pressure P2 at 2-3bar；
D, progressively opening tank car liquid feed valve V5, turn down refluxed cryogenic stop valve V4 simultaneously, after controlling cryogenic liquid pump LP, pressure is until refluxed cryogenic stop valve V4 is fully closed；
E, fill end after, termination of pumping.
Embodiment: the present invention has root return duct to guide to storage tank at cryogenic liquid pump discharge, in storage tank, liquid flows into cryogenic liquid pump, storage tank is returned again by cryogenic liquid pump outlet return pipe flow, after confirming cryogenic liquid pump pre-cooling thoroughly, start cryogenic liquid pump, controlling pressure ratio tank car pressure height 2-3bar after pump by reflux inlet on return duct, then open tank car liquid feed valve and fill liquid to tank car, groove interior pressure can progressively have and significantly reduces.
Claims (3)
1. a zero-emission charging device for cryogenic liquid tank lorry, it mainly includes conventional insulation cryogenic liquid tank (SV), cryogenic liquid pump (LP), Subzero valve；It is characterized in that the outlet of described cryogenic liquid pump (LP) connects tank car (SC) by adapter (1) and Subzero valve, the import of this cryogenic liquid pump (LP) is connected to storage tank (SV) by feed liquor connecting tube (2)；Described adapter (1) piece return duct with refluxed cryogenic stop valve (V4) (3) of upper concatenation, and it is connected to storage tank (SV).
The zero-emission charging device of cryogenic liquid tank lorry the most according to claim 1, the both sides that the discharge connection (1) that it is characterized in that cryogenic liquid pump (LP) is upper, be positioned at return duct (3) concatenation point are separately installed with an outlet non-return valve (V2) and outlet shutoff valve (V3), it is provided with on the feed tube (4) of described tank car (SC) between tank car liquid feed valve (V5), and described feed tube (4) with adapter (1) and is provided with convenient for the two pipes pipe connection mechanism (C) being connected；It is also associated with a liquid feed valve (V1) on inlet side feed liquor connecting tube (2) of described cryogenic liquid pump (LP)；An outlet blow-off pipe (5) with outlet blow through valve (V6) also it is serially connected with in adapter (1) outside the outlet of cryogenic liquid pump (LP).
3. the methods for filling of the zero-emission charging device utilizing cryogenic liquid tank lorry described in claim 1 or 2, it is characterised in that described methods for filling comprises the steps:
A), pre-cooling cryogenic liquid pump (LP): standard-sized sheet refluxed cryogenic stop valve (V4), progressively open big liquid feed valve (V1), now cryogenic liquid pump (LP) starts pre-cooling, after pre-cooling a period of time, crack outlet blow through valve (V6), in time exporting blow through valve (V6) outlet and have continuous liquid to spray, represent that cryogenic liquid pump (LP) is the coldest；
C, startup cryogenic liquid pump (LP), after playing pressure, control cryogenic liquid pump (LP) outlet pressure (P1) more than storage pressure (P2) at 2-3bar；
D, progressively open tank car liquid feed valve (V5), turn down refluxed cryogenic stop valve (V4) simultaneously, control cryogenic liquid pump (LP) pressure afterwards until refluxed cryogenic stop valve (V4) is fully closed；
E, fill end after, termination of pumping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610441635.4A CN105909969A (en) | 2016-06-20 | 2016-06-20 | Zero-emission filling device for cryogenic liquid tank car and filling method of zero-emission filling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610441635.4A CN105909969A (en) | 2016-06-20 | 2016-06-20 | Zero-emission filling device for cryogenic liquid tank car and filling method of zero-emission filling device |
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| CN105909969A true CN105909969A (en) | 2016-08-31 |
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| CN201610441635.4A Pending CN105909969A (en) | 2016-06-20 | 2016-06-20 | Zero-emission filling device for cryogenic liquid tank car and filling method of zero-emission filling device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107673302A (en) * | 2017-11-13 | 2018-02-09 | 阿坝汶川侨源气体有限公司 | The control system and method that Intelligent Low Temperature liquid tank car fills |
| CN108468946A (en) * | 2018-05-24 | 2018-08-31 | 浙江智海化工设备工程有限公司 | A kind of the automation charging system and automation methods for filling of low-temperature liquid storage tank |
| CN109027667A (en) * | 2018-07-31 | 2018-12-18 | 荆门宏图特种飞行器制造有限公司 | Liquefied gas storage uninstalling system |
| CN113513698A (en) * | 2021-07-19 | 2021-10-19 | 广州市粤佳气体有限公司 | Industrial gas low-temperature filling automatic control method |
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| EP1236950A2 (en) * | 2001-02-08 | 2002-09-04 | Chart, Inc. | Interlock for cryogenic liquid off-loading systems |
| CN202938010U (en) * | 2012-11-27 | 2013-05-15 | 武汉钢铁(集团)公司 | Automatic filling system |
| CN204005205U (en) * | 2013-12-06 | 2014-12-10 | 马钢(集团)控股有限公司 | A kind of tank car falls the device of liquid to low-temperature liquid storage tank |
| JP2015113949A (en) * | 2013-12-13 | 2015-06-22 | 株式会社神戸製鋼所 | Gas charging device and gas charging method |
| CN205208134U (en) * | 2015-12-24 | 2016-05-04 | 宁波中金石化有限公司 | Ordinary pressure liquid nitrogen storage tank fills dress system |
| CN205297892U (en) * | 2015-11-20 | 2016-06-08 | 南京钢铁股份有限公司 | Cryogenic liquids fills car pump and promptly cuts off remote control device |
| CN205746015U (en) * | 2016-06-20 | 2016-11-30 | 浙江智海化工设备工程有限公司 | A kind of zero-emission charging device of cryogenic liquid tank lorry |
-
2016
- 2016-06-20 CN CN201610441635.4A patent/CN105909969A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1236950A2 (en) * | 2001-02-08 | 2002-09-04 | Chart, Inc. | Interlock for cryogenic liquid off-loading systems |
| CN202938010U (en) * | 2012-11-27 | 2013-05-15 | 武汉钢铁(集团)公司 | Automatic filling system |
| CN204005205U (en) * | 2013-12-06 | 2014-12-10 | 马钢(集团)控股有限公司 | A kind of tank car falls the device of liquid to low-temperature liquid storage tank |
| JP2015113949A (en) * | 2013-12-13 | 2015-06-22 | 株式会社神戸製鋼所 | Gas charging device and gas charging method |
| CN205297892U (en) * | 2015-11-20 | 2016-06-08 | 南京钢铁股份有限公司 | Cryogenic liquids fills car pump and promptly cuts off remote control device |
| CN205208134U (en) * | 2015-12-24 | 2016-05-04 | 宁波中金石化有限公司 | Ordinary pressure liquid nitrogen storage tank fills dress system |
| CN205746015U (en) * | 2016-06-20 | 2016-11-30 | 浙江智海化工设备工程有限公司 | A kind of zero-emission charging device of cryogenic liquid tank lorry |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107673302A (en) * | 2017-11-13 | 2018-02-09 | 阿坝汶川侨源气体有限公司 | The control system and method that Intelligent Low Temperature liquid tank car fills |
| CN107673302B (en) * | 2017-11-13 | 2023-08-01 | 阿坝汶川侨源气体有限公司 | Intelligent low-temperature liquid tank car filling control system and method |
| CN108468946A (en) * | 2018-05-24 | 2018-08-31 | 浙江智海化工设备工程有限公司 | A kind of the automation charging system and automation methods for filling of low-temperature liquid storage tank |
| CN109027667A (en) * | 2018-07-31 | 2018-12-18 | 荆门宏图特种飞行器制造有限公司 | Liquefied gas storage uninstalling system |
| CN113513698A (en) * | 2021-07-19 | 2021-10-19 | 广州市粤佳气体有限公司 | Industrial gas low-temperature filling automatic control method |
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Application publication date: 20160831 |