CN108131562A - A kind of liquefied natural gas of controllable pressure is unloaded and storage tank supercharging device - Google Patents
A kind of liquefied natural gas of controllable pressure is unloaded and storage tank supercharging device Download PDFInfo
- Publication number
- CN108131562A CN108131562A CN201711285226.0A CN201711285226A CN108131562A CN 108131562 A CN108131562 A CN 108131562A CN 201711285226 A CN201711285226 A CN 201711285226A CN 108131562 A CN108131562 A CN 108131562A
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- CN
- China
- Prior art keywords
- valve
- storage tank
- pressure
- boost
- return
- 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.)
- Pending
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Classifications
-
- 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
- F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
- F17C7/02—Discharging liquefied gases
- F17C7/04—Discharging liquefied gases with change of state, e.g. vaporisation
-
- 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
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
- F17C13/025—Special adaptations of indicating, measuring, or monitoring equipment having the pressure as the parameter
-
- 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
-
- 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
-
- 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
- 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
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/03—Mixtures
- F17C2221/032—Hydrocarbons
- F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
Landscapes
- 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 liquefied natural gas of controllable pressure to unload and storage tank supercharging device, including pipeline of unloading, pressure piping and return line, the pipeline of unloading includes the liquid valve door being sequentially connected in series, check-valves, pressure gauge and micro- opens safety valve, micro- safety valve downstream pipe that opens is divided into two-way, is connect respectively with storage tank inlet and downstream interface；The return line includes the carriage return valve of concatenation and return pot valve door, and the export pipeline of return pot valve door is connect simultaneously with storage tank gas phase mouth and downstream outlet interface；The pressure piping includes the tank car boost valve being sequentially connected in series and storage tank boost valve connect with storage tank inlet, be equipped between storage tank boost valve and return pot valve door be sequentially connected in series unload/storage tank booster, complete open safety valve and be parallel with the boost pressure regulation valve that bridging bypasses.Apparatus of the present invention efficiently solve tank car, and to unload liquid speed degree slow, and pressure of storage tank is insufficient, keeps constant pressure of storage tank, fast and safely.
Description
Technical field
The invention belongs to liquefied natural gas supercharging equipment technical field, the liquefied natural gas of specifically a kind of controllable pressure unloads
Vehicle and storage tank supercharging device.
Background technology
Liquefied natural gas (LNG) is widely used as clean energy resource on industrial and civilian.LNG is generally by low temperature
Tank wagon is transported to LNG gasification station, is pressurized by the supercharging device of unloading in station to tank car.Using pressure difference by the LNG in tank car
It is discharged into the storage tank of gasification station, is pressurized, gasifies by storage tank, the transmission ＆ distribution equipment such as pressure regulation is conveyed to user.What is used at present unloads
With the investment of storage tank supercharging device is big, maneuverability is poor, technological process and complicated, particularly when tank car and tank inner pressure
It is too low, unload liquid and go out liquid speed degree it is slow when, cause in tank car LNG that can not be discharged into storage tank, and as dielectric dissipation can not in storage tank
Downstream user provides the supply of adequate pressure.
Invention content
The purpose of the present invention is in view of the deficiencies of the prior art, and propose a kind of liquefied natural gas of controllable pressure unload and
Storage tank supercharging device.
The present invention solves its technical problem and following technical scheme is taken to realize：
A kind of liquefied natural gas of controllable pressure is unloaded and storage tank supercharging device, including pipeline of unloading, pressure piping and is returned
Air pipe,
Wherein, the pipeline of unloading include the liquid valve door being sequentially connected in series, check-valves, pressure gauge and it is micro- open safety valve, it is micro-
The downstream pipe for opening safety valve is divided into two-way, is connect after storage tank liquid flowing valve with storage tank inlet all the way, another way is through downstream
Supplying valve is connect behind the door with downstream interface；
Wherein, the return line includes the carriage return valve of concatenation and return pot valve door, and the export pipeline of return pot valve door is simultaneously
It is connect with storage tank gas phase mouth and downstream outlet interface；
Wherein, the pressure piping includes the tank car boost valve being sequentially connected in series and storage tank boost valve, storage tank pressure charging valve
The export pipeline of door is connect with storage tank inlet；
Meanwhile it is equipped with what is be sequentially connected in series between the inlet ductwork of storage tank boost valve and the inlet ductwork of return pot valve door
It unloads/storage tank booster, the full boost pressure regulation valve for opening safety valve and being parallel with bridging bypass,
Moreover, micro- open in the pipeline of unloading is further fitted with micro- opening safety valve bottom valve and micro- opening safety on safety valve
Valve blow valve.
Moreover, it is further fitted with opening safety valve bottom valve entirely on safety valve and opens safety valve emptying valve entirely in complete open.
The advantages and positive effects of the present invention are：
Apparatus of the present invention efficiently solve tank car, and to unload liquid speed degree slow, and pressure of storage tank is insufficient, keeps constant pressure of storage tank, machine
Dynamic flexibility is good, cost of investment is low, easy to implement, easy to maintenance, fast and safely.
Description of the drawings
Fig. 1 is the structure diagram of the present invention.
Specific embodiment
Present invention implementation is further described below in conjunction with attached drawing, following embodiment is descriptive, is not to limit
Property, it is impossible to protection scope of the present invention is limited with this.
A kind of liquefied natural gas of controllable pressure is unloaded and storage tank supercharging device, as shown in Figure 1, including pipeline of unloading, increasing
Pressure pipe road and return line,
Wherein, the pipeline of unloading includes the liquid valve door 1 being sequentially connected in series, check-valves 2, pressure gauge 3 and micro- opens safety valve
4, micro- downstream pipe for opening safety valve is divided into two-way, is connect after storage tank liquid flowing valve 7 with storage tank feed liquor all the way, under another way warp
It is connect after trip feed flow valve 8 with downstream interface；
Wherein, the return line includes the carriage return valve 18 of concatenation and return pot valve door 16, the export pipeline of return pot valve door
It is connect simultaneously with storage tank gas phase mouth and downstream outlet interface；
Wherein, the pressure piping includes the tank car boost valve 9 being sequentially connected in series and storage tank boost valve 17, storage tank supercharging
The export pipeline of valve is connect with storage tank inlet；
Meanwhile it is equipped with what is be sequentially connected in series between the inlet ductwork of storage tank boost valve and the inlet ductwork of return pot valve door
Unload/storage tank booster 10, it is complete open safety valve 12 and the boost pressure regulation valve 15 with bridging bypass 14,
In the specific implementation of the present invention, it is further fitted with micro- opening safety on safety valve in micro- open of the pipeline of unloading
Valve bottom valve 5 and micro- open safety valve emptying valve 6.
In the specific implementation of the present invention, it is described it is complete open be further fitted with opening entirely on safety valve safety valve bottom valve 11 and
Open safety valve emptying valve 13 entirely.
It in the embodiment, unloads/storage tank booster model：300Nm3/h；Check-valves model：DH61F-40P DN40；Valve
Gate number has respectively：DJ61F-40P DN15、DJ61F-40P DN32、DJ61F-40P DN40、；It is micro- to open safety valve：DA21F-
40P DN15, open safety valve entirely：DA22Y-40P DN15；Boost pressure regulation valve：DY22F-25P DN25, pipeline use stainless steel
Pipe, specification Φ 18mm × 3mm, 45 × 3mm of Φ, 38 × 3mm of Φ.
The course of work of the present invention：
LNG tank cars unload liquid to storage tank or directly to downstream by pipeline of unloading, and when insufficient pressure, the liquefaction in tank car is natural
Tank car boost valve of the gas through pressure piping enters booster gasification, and 600 times of volume expansion through carriage return valve to car, makes slot
Vehicle pressure increases and ensures that LNG tank cars normally unload liquid, when slot interior pressure rises to a certain extent it is necessary to closing valve；Together
For sample when, with dielectric dissipation, at this moment opening storage tank boost valve in LNG storage tank, tank inside liquid separation body enters booster gasification,
When pressure inside the tank is gradually lowered to a certain setting value, boost pressure regulation valve is opened, and medium is entered by regulating valve makes pressure in holding vessel
Power increases.When pressure rise to setting value, regulating valve is closed, and supercharging stops, it is ensured that storage tank gives downstream feed flow.
Claims (3)
1. a kind of liquefied natural gas of controllable pressure is unloaded and storage tank supercharging device, it is characterised in that：Including pipeline of unloading, supercharging
Pipeline and return line,
Wherein, the pipeline of unloading include the liquid valve door being sequentially connected in series, check-valves, pressure gauge and it is micro- open safety valve, it is micro- to open peace
The downstream pipe of full valve is divided into two-way, is connect after storage tank liquid flowing valve with storage tank inlet all the way, and another way is through downstream feed flow
It is connect after valve with downstream interface；
Wherein, the return line includes the carriage return valve of concatenation and return pot valve door, the export pipeline of return pot valve door simultaneously with storage
Tank gas phase mouth and the connection of downstream outlet interface；
Wherein, the pressure piping includes the tank car boost valve being sequentially connected in series and storage tank boost valve, storage tank boost valve
Export pipeline is connect with storage tank inlet；
Meanwhile unloading of being sequentially connected in series is installed between the inlet ductwork of storage tank boost valve and the inlet ductwork of return pot valve door
Vehicle/storage tank booster, the full boost pressure regulation valve for opening safety valve and being parallel with bridging bypass.
2. the liquefied natural gas of controllable pressure according to claim 1 is unloaded and storage tank supercharging device, it is characterised in that：
Micro- open of the pipeline of unloading is further fitted with micro- opening safety valve bottom valve and micro- opening safety valve emptying valve on safety valve.
3. the liquefied natural gas of controllable pressure according to claim 1 is unloaded and storage tank supercharging device, it is characterised in that：
Complete open is further fitted with opening safety valve bottom valve entirely on safety valve and opens safety valve emptying valve entirely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711285226.0A CN108131562A (en) | 2017-12-07 | 2017-12-07 | A kind of liquefied natural gas of controllable pressure is unloaded and storage tank supercharging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711285226.0A CN108131562A (en) | 2017-12-07 | 2017-12-07 | A kind of liquefied natural gas of controllable pressure is unloaded and storage tank supercharging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108131562A true CN108131562A (en) | 2018-06-08 |
Family
ID=62389205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711285226.0A Pending CN108131562A (en) | 2017-12-07 | 2017-12-07 | A kind of liquefied natural gas of controllable pressure is unloaded and storage tank supercharging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108131562A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110736026A (en) * | 2019-10-24 | 2020-01-31 | 邳州亚联环保科技有限公司 | residual liquid recycling system |
| CN112555676A (en) * | 2020-12-10 | 2021-03-26 | 陕西融科低温设备有限公司 | Ultra-low temperature liquid pressurization unloading device and method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001153297A (en) * | 1999-11-29 | 2001-06-08 | Hiroshima Gas Kk | Pressure dropping system for carrier container and the like and gas blowing device to storage tank |
| US20020104581A1 (en) * | 2001-02-08 | 2002-08-08 | Drube Thomas K. | Interlock for cryogenic liquid off-loading systems |
| CN204986392U (en) * | 2015-07-24 | 2016-01-20 | 江苏华钡燃气设备有限公司 | Unload pressure boost sled of liquefied petroleum gas |
| CN205261216U (en) * | 2015-11-13 | 2016-05-25 | 天津华迈燃气装备股份有限公司 | Multi -functional pressure boost of LNG vaporizing station sled dress device |
| CN205350850U (en) * | 2015-12-28 | 2016-06-29 | 天津华迈燃气装备股份有限公司 | Gasification equipment of double fuel unit is supplied with to tank wagon |
| CN205781979U (en) * | 2016-05-19 | 2016-12-07 | 天津华迈环保设备有限公司 | A kind of liquefied natural gas is unloaded and storage tank supercharging integrating device |
| CN206159821U (en) * | 2016-08-05 | 2017-05-10 | 上海沃金天然气利用有限公司 | Liquefied natural gas sled dress station |
-
2017
- 2017-12-07 CN CN201711285226.0A patent/CN108131562A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001153297A (en) * | 1999-11-29 | 2001-06-08 | Hiroshima Gas Kk | Pressure dropping system for carrier container and the like and gas blowing device to storage tank |
| US20020104581A1 (en) * | 2001-02-08 | 2002-08-08 | Drube Thomas K. | Interlock for cryogenic liquid off-loading systems |
| CN204986392U (en) * | 2015-07-24 | 2016-01-20 | 江苏华钡燃气设备有限公司 | Unload pressure boost sled of liquefied petroleum gas |
| CN205261216U (en) * | 2015-11-13 | 2016-05-25 | 天津华迈燃气装备股份有限公司 | Multi -functional pressure boost of LNG vaporizing station sled dress device |
| CN205350850U (en) * | 2015-12-28 | 2016-06-29 | 天津华迈燃气装备股份有限公司 | Gasification equipment of double fuel unit is supplied with to tank wagon |
| CN205781979U (en) * | 2016-05-19 | 2016-12-07 | 天津华迈环保设备有限公司 | A kind of liquefied natural gas is unloaded and storage tank supercharging integrating device |
| CN206159821U (en) * | 2016-08-05 | 2017-05-10 | 上海沃金天然气利用有限公司 | Liquefied natural gas sled dress station |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110736026A (en) * | 2019-10-24 | 2020-01-31 | 邳州亚联环保科技有限公司 | residual liquid recycling system |
| CN112555676A (en) * | 2020-12-10 | 2021-03-26 | 陕西融科低温设备有限公司 | Ultra-low temperature liquid pressurization unloading device and method |
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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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180608 |