CN111486337A - L NG bottle limit charging device - Google Patents

L NG bottle limit charging device Download PDF

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Publication number
CN111486337A
CN111486337A CN202010446207.7A CN202010446207A CN111486337A CN 111486337 A CN111486337 A CN 111486337A CN 202010446207 A CN202010446207 A CN 202010446207A CN 111486337 A CN111486337 A CN 111486337A
Authority
CN
China
Prior art keywords
opening part
way valve
floating ball
vertical pipe
liquid
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
Application number
CN202010446207.7A
Other languages
Chinese (zh)
Inventor
王伟
白江坤
王国营
张童
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shandong Auyan New Energy Technology Co ltd
Original Assignee
Shandong Auyan New Energy Technology Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shandong Auyan New Energy Technology Co ltd filed Critical Shandong Auyan New Energy Technology Co ltd
Priority to CN202010446207.7A priority Critical patent/CN111486337A/en
Publication of CN111486337A publication Critical patent/CN111486337A/en
Pending legal-status Critical Current

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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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/10—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/18—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float
    • F16K31/20—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float actuating a lift valve
    • F16K31/28—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float actuating a lift valve with two ore more floats actuating one valve
    • 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
    • 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
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • 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
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0388—Arrangement of valves, regulators, filters
    • F17C2205/0391—Arrangement of valves, regulators, filters inside the pressure vessel
    • 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
    • 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
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • 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
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/04—Reducing risks and environmental impact
    • 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
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0165—Applications for fluid transport or storage on the road
    • F17C2270/0168—Applications for fluid transport or storage on the road by vehicles
    • F17C2270/0171—Trucks

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

The invention discloses an L NG bottle charge limiting device, which relates to the technical field of L NG gas bottles and comprises a three-way valve, a liquid inlet pipe, a vertical pipe, a floating ball and a control valve, wherein the three-way valve is provided with a first opening part, a second opening part and a third opening part, the first opening part and the second opening part are respectively positioned at two sides of the three-way valve, the third opening part is arranged at the lower part of the three-way valve, the liquid inlet pipe is connected with the first opening part and communicated with the three-way valve, the vertical pipe is connected with the third opening part and communicated with the three-way valve, a limiting mechanism is arranged in the vertical pipe, the floating ball is arranged in an inner cavity of the vertical pipe and positioned above the limiting mechanism, the floating ball can float up and down in the vertical pipe under the action of liquid buoyancy, the diameter of the floating ball is not smaller than the inner diameter of the horizontal direction of the three-way valve, when the liquid level in the gas bottle is higher than that of the liquid inlet.

Description

L NG bottle limit charging device
Technical Field
The invention relates to the technical field of L NG gas cylinders, in particular to a L NG gas cylinder limited charging device.
Background
The L NG gas cylinder for the automobile is a special gas cylinder for storing low-temperature liquefied gas (L NG), is mainly used for heavy truck natural gas automobiles and replaces traditional fuel oil automobiles, and the liquefied natural gas (L NG) has a special storage form.
The design basis is mainly TSG R0006-2014 gas cylinder safety technology supervision regulation, two standards of vehicle liquefied natural gas welding heat-insulating gas cylinders (execution standard GB/T34510 liquefied natural gas cylinders for vehicles) and enterprise standards of gas cylinder production enterprises, wherein the filling rate of the gas cylinders is subjected to clear regulation and required type tests.
The cylinder for L NG has a double-layer structure, the interlayer of the double-layer structure has a high vacuum state to prevent L NG liquid from conducting heat in a convection manner with the outside, but the heat transfer supported by the liner and the heat radiation of the interlayer can heat the liner of the cylinder, L NG liquid in the cylinder is gasified, so that the pressure in the cylinder rises, at present, each cylinder for L NG is provided with a safety discharge valve in a gas phase space to prevent the gas cylinder for L NG from being damaged due to overhigh pressure, in order to ensure that a safety valve can discharge gas instead of L NG liquid when discharging, a special design is carried out on the cylinder structure to ensure that a gas phase space with enough filling medium can be left in the cylinder, because compressibility of the gas phase is far larger than liquid phase, the reserved gas phase space ensures that the gas phase (liquid phase) in the cylinder is gasified when absorbing heat, the gas phase space does not rise excessively fast, obviously, whether the reserved gas phase space has enough volume to play a role of isolating the gas cylinder for ensuring that the pressure is overhigh, because the reserved gas phase space is larger than the gas phase space for the gas cylinder for the slow filling, when the gas cylinder is filled with too much, the gas phase space for the gas cylinder for the gas filling medium, the cylinder for the safety is filled with too much larger filling, because the safety, the safety valve is welded, the safety valve for the cylinder for the safety valve is welded together, the safety valve for the cylinder for the safety valve for the cylinder for the safety valve is welded, the safety valve is welded cylinder for the safety valve for the cylinder for the safety valve for the.
Disclosure of Invention
In order to improve the original design mode, reduce potential safety hazards, ensure that the filling precision in the filling process is more accurate, and reduce the complicated procedures brought by the production process, the invention adopts the following technical scheme that the L NG bottle limit filling device comprises:
the three-way valve is provided with a first opening part, a second opening part and a third opening part, the first opening part and the second opening part are respectively positioned at two sides of the three-way valve, and the third opening part is arranged at the lower part of the three-way valve;
the liquid inlet pipe is connected with the first opening and communicated with the three-way valve;
the vertical pipe is connected with the third opening part and communicated with the three-way valve part, and a limiting mechanism is arranged in the vertical pipe;
and the floating ball is arranged in the inner cavity of the vertical pipe, is positioned above the limiting mechanism, can float up and down in the vertical pipe under the action of liquid buoyancy, and has the diameter not less than the inner diameter of the three-way valve in the horizontal direction.
Preferably, the limiting mechanism is a pin.
Preferably, the side wall of the vertical pipe is provided with a plurality of through holes which are positioned below the limiting mechanism.
Preferably, the number of the floating balls is two, and the floating balls are an upper floating ball and a lower floating ball respectively.
Furthermore, the diameter of the lower floating ball is equal to that of the upper floating ball.
When the liquid level is lower than L NG gas cylinder safety space, the floating ball returns to the vertical tube under the action of gravity because the whole inner container is in a pressure balance state, thereby avoiding the influence of the liquid level height on the safety space in the liquid adding process.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the present invention in use;
fig. 3 is a schematic diagram of the prior art.
Detailed Description
The invention is further described with reference to the following figures and examples.
As shown in figures 1 and 2, an L NG bottle charge limiting device comprises a three-way valve 3, a liquid inlet pipe 2, a vertical pipe 7 and a floating ball mechanism, wherein the three-way valve 3 is provided with a first opening part 31, a second opening part 32 and a third opening part 33, the first opening part 31 and the second opening part 32 are respectively positioned at two sides of the three-way valve 3, the third opening part 33 is arranged at the lower part of the three-way valve 3, the liquid inlet pipe 2 is connected with the first opening part 31 and communicated with the three-way valve 3, the vertical pipe 7 is connected with the third opening part 33 and communicated with the three-way valve 3, a limiting pin 5 is arranged in the vertical pipe, the floating ball mechanism is a floating ball 41 and a floating ball 42 respectively, is arranged in an inner cavity of the vertical pipe 7 and positioned above the limiting pin 5 and can float up and down in the vertical pipe 7 under the action of liquid buoyancy, the diameter of the lower floating ball 42 is equal to the diameter of the upper floating ball 41, the diameter of the floating ball 41 is not smaller than the inner diameter of the horizontal.
The floating ball is made of a material with the density lower than that of L NG liquefied natural gas, the floating ball is required to have smaller viscosity and a lower friction coefficient, the floating ball has ultralow temperature resistance performance (-200-180 ℃) and the capacity of bearing the liquid filling pressure during filling to resist crushing, the vertical pipe is made of austenitic stainless steel, six liquid inlet holes are formed below the vertical pipe, the floating ball is positioned at the top of the liquid level of the three-way valve when the liquid level is higher than that of the three-way valve, a limit pin gauge is arranged at the bottom of the vertical pipe to prevent the floating ball from falling off, the three-way valve is made of austenitic stainless steel, the inner cavity of the three-way valve is designed into a conical surface, when the upper floating ball is positioned in the floater sleeve due to the buoyancy, the upper floating ball is tightly attached to the conical surface to form a valve closing due to the effect of the filling pressure, the lower floating ball has a smaller gap with the wall of the vertical pipe, the liquid cannot be filled into the gas cylinder continuously at the moment, the effect of closing the liquid filling pipe is achieved, when the liquid level is lower than the safety space of the L gas cylinder 1, the whole inner container is in a pressure balanced state, the liquid filling ball returns to the liquid filling pipe under the effect of preventing the.
As shown in figure 3, the working principle of the conventional device is that an excessive-prevention cylinder 8 is arranged in an L NG gas cylinder 1, a small hole 9 is formed in the bottom of the excessive-prevention cylinder, the rising height of the liquid level in the cylinder is much higher than the liquid level of the excessive-prevention cylinder 8 when L NG is filled, when the liquid level reaches the top, the pressure in the bottle body is increased, and the L NG liquid filling machine stops filling liquid due to 'jump robbery' caused by the fact that the pressure in the bottle is larger, but the liquid inlet speed of the small hole 9 in the bottom of the excessive-prevention cylinder 8 is lower, after the excessive-prevention internal volume cannot be filled after jump robbery is finished, the liquid level of the bottle body flows into the excessive-prevention cylinder 8 due to the action of pressure, and then.
The technology has the defects that the L NG gas cylinder is heavy in overall weight, complicated to manufacture, influences the energy consumption level of the whole vehicle after being used, has potential safety hazards, is easy to be unstable due to the fact that the traditional anti-excess device is stressed by the liquid level when liquid is filled excessively, and is easy to lose the over-filling effect when the liquid is filled again at the liquid level of more than 50% because liquid with the height equal to the liquid level in the cylinder exists inside the traditional anti-excess device when the liquid is filled more than 50%.
The traditional excessive-prevention device is not needed, namely the excessive-prevention barrel is welded inside, so that the overall weight is reduced, and the energy consumption is reduced; the traditional anti-excess device is easy to lose stability due to the pressure of the liquid level, so that the potential safety hazard of the traditional anti-excess device is reduced; the measurement is more accurate, and manufacturing, installation are simple and convenient have saved processes such as manpower, welding.
Although the specific embodiments of the present invention have been described with reference to the accompanying drawings, the scope of the present invention is not limited thereto, and some technical contents known to those skilled in the art will be omitted herein for brevity.

Claims (5)

1. An L NG bottle charge limiting device, comprising:
the three-way valve is provided with a first opening part, a second opening part and a third opening part, the first opening part and the second opening part are respectively positioned at two sides of the three-way valve, and the third opening part is arranged at the lower part of the three-way valve;
the liquid inlet pipe is connected with the first opening and communicated with the three-way valve;
the vertical pipe is connected with the third opening part and communicated with the three-way valve part, and a limiting mechanism is arranged in the vertical pipe;
and the floating ball is arranged in the inner cavity of the vertical pipe, is positioned above the limiting mechanism, can float up and down in the vertical pipe under the action of liquid buoyancy, and has the diameter not less than the inner diameter of the three-way valve in the horizontal direction.
2. The L NG bottle charge limiting device of claim 1, wherein the limiting mechanism is a pin.
3. The L NG bottle charge limiting device of claim 1, wherein the side wall of the vertical tube is provided with a plurality of through holes, located below the limiting mechanism.
4. The L NG bottle limit charging device of claim 1, wherein the number of the floating balls is two, and the two floating balls are an upper floating ball and a lower floating ball respectively.
5. The L NG bottle charge-limiting device of claim 4, wherein the diameter of the lower floating ball is equal to the diameter of the upper floating ball.
CN202010446207.7A 2020-05-25 2020-05-25 L NG bottle limit charging device Pending CN111486337A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010446207.7A CN111486337A (en) 2020-05-25 2020-05-25 L NG bottle limit charging device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010446207.7A CN111486337A (en) 2020-05-25 2020-05-25 L NG bottle limit charging device

Publications (1)

Publication Number Publication Date
CN111486337A true CN111486337A (en) 2020-08-04

Family

ID=71795677

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010446207.7A Pending CN111486337A (en) 2020-05-25 2020-05-25 L NG bottle limit charging device

Country Status (1)

Country Link
CN (1) CN111486337A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113803924A (en) * 2021-09-17 2021-12-17 赵宝玉 Cell refrigerator capable of preventing cell pollution

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113803924A (en) * 2021-09-17 2021-12-17 赵宝玉 Cell refrigerator capable of preventing cell pollution
CN113803924B (en) * 2021-09-17 2023-08-18 山东中科赛奥生物科技有限公司 Cell refrigerator capable of preventing cell pollution

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