CN205715862U - A kind of Combined type safety bleeder for high-pressure gas cylinder valve - Google Patents
A kind of Combined type safety bleeder for high-pressure gas cylinder valve Download PDFInfo
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- CN205715862U CN205715862U CN201620552276.5U CN201620552276U CN205715862U CN 205715862 U CN205715862 U CN 205715862U CN 201620552276 U CN201620552276 U CN 201620552276U CN 205715862 U CN205715862 U CN 205715862U
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Abstract
nullThis utility model relates to a kind of Combined type safety bleeder for high-pressure gas cylinder valve，Gas cylinder valve housing (10) is provided with the safety relief hole (9) being in communication with the outside and leads to the passage (8) within gas cylinder，Safety relief device is arranged on housing (10)，For controlling the connected state between safety relief hole (9) and passage (8)，Safety relief device includes molten bolt valve (1)、Heat conduction cap (2)、Pressure-bearing rod (4) and spring (5)，Thrombolytic valve (1) is provided with alloy and accommodates chamber and alloy discharge orifice (12)，Alloy accommodates chamber and is used for placing fusible alloy block (13) and connecting with alloy discharge orifice (12)，It is relative that heat conduction cap (2) one end accommodates chamber with alloy，The other end is connected by spring (5) with pressure-bearing rod (4)，Pressure-bearing rod (4) and passage (8) form fit.Compared with prior art, this utility model has that length in service life, air-tightness be good, high reliability.
Description
Technical field
This utility model relates to a kind of safety relief device, especially relates to a kind of combination type for high-pressure gas cylinder valve and pacifies
Full bleeder.
Background technology
Along with society and the development of science and technology, the demand of pressure vessel is the most more come by the industry such as petrochemical industry, the energy, medicine, metallurgy
The most, application is more and more wider.Pressure vessel is a kind of pressure-bearing device, but every turret vessel is all to set by predetermined pressure
Meter, so its wall thickness can only allow it to bear certain pressure, the most so-called maximum working (operation) pressure (MWP), in this pressure limit
In, container can exceed this pressure with safe operation, and container is possible to be destroyed because of excessive plastic deformation, and
Pernicious major accident can be thereby resulted in.
In pressure vessel, gas cylinder is very universal in industry and life.Ending for the end of the year 2007, China is using gas cylinder number
Amount has reached 1.3 hundred million, and the safe handling of gas cylinder is closely bound up with people's life and social property safety.According to " gas cylinder safely
Technology Supervision Code ", except contain concrete gas or other fuel gas gas cylinders, respiratory organ gas cylinder, fire extinguisher gas cylinder,
Dissolved acetylence cylinder, the welded insulated gas cylinder of splendid attire liquefied gas at low temp, the splendid attire bottle bundler of liquid gas, long tube drag
Car and bundled tube container all should arrange safe pressure relief device with big volume gas cylinder.And along with the development of science and technology, safety relief fills
Put and be acknowledged as important pressure vessel corollary apparatus.Safe pressure relief device is widely used in petroleum chemical industry at present
In, it, as the important means preventing pressure from increasing to over permissible value, has become as and guarantees the indispensable of system safety operation
Corollary apparatus.
Safe pressure relief device is a kind of in order to ensure that pressure vessel safety runs, prevents it from the safety of superpressure occurring.
Safe pressure relief device has such function: when container runs under normal operating pressure, and it ensures tightly not leak, and one
Denier container inner pressure exceedes regulation, and it just can be discharged the gas within container rapidly automatically, makes the pressure in container protect all the time
Hold in the range of the highest allowable pressure.Safe pressure relief device has many types, the safe pressure relief device used on gas cylinder at present
There are rupture disk, fusible plug, safety relief valve and rupture disk-fusible plug series connection set composite.Conventional fusible plug is exactly therein
Dissolve type safe pressure relief device.It is utilize the low melting point fusible alloy in device the most i.e. to melt, open logical
Road makes gas eject, from the hole of the original fusible alloy filled, pressure of releasing, thus reaches the purpose of pressure release.It is characterized in
The superpressure occurred owing to temperature raises in being mainly used in preventing container, because only that the temperature of medium is increased to a certain degree,
Fusible alloy could melt, and the pressure in container just can be released.So simple in construction, change easily, and true by fusion temperature
Fixed operating pressure is relatively easy to control.
Work under environment under high pressure for a long time yet with fusible alloy, easily in the case of not up to melting temperature,
Gradually it is extruded alloy discharge orifice, creep i.e. occurs, destroy the air-tightness of safe pressure relief device.
Utility model content
Defect that the purpose of this utility model is contemplated to overcome above-mentioned prior art to exist and provide a kind of air-tightness good,
Service life length the Combined type safety bleeder for high-pressure gas cylinder valve.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of Combined type safety bleeder for high-pressure gas cylinder valve, described gas cylinder valve housing be provided with
The safety relief hole of extraneous connection and lead to the passage within gas cylinder, described safety relief device is connected with housing,
For controlling the connected state between safety relief hole and passage,
Described safety relief device includes molten bolt valve, heat conduction cap, pressure-bearing rod and spring, and described molten bolt valve is provided with conjunction
Gold accommodates chamber and alloy discharge orifice, and described alloy accommodates chamber and is used for placing fusible alloy block and connecting with alloy discharge orifice, leads
It is relative that hot tap one end accommodates chamber with alloy, and the other end is connected by spring with pressure-bearing rod, and pressure-bearing rod is flexibly connected with passage, and two
Sealing structure is had between person,
During installation, described molten bolt valve is fixed on housing, and alloy discharge orifice leads to hull outside, the normal work of gas cylinder
When making, spring is compressive state, makes pressure-bearing rod be connected with vent seal, when high pressure gas pressure of the inside of a bottle exceedes operating pressure, holds
Depression bar is away from passage, and in making bottle, gas is discharged to safety relief hole from passage, and in gas cylinder, temperature exceedes operating temperature
Time, fusible alloy block melts, and heat conduction cap extrudes fusible alloy block under spring action makes it flow out from alloy discharge orifice, pressure-bearing
Bar is away from passage under bottle internal gas pressure effect, and in making bottle, gas is discharged to safety relief hole from passage.
Described pressure-bearing rod includes pressure-bearing rod main body and vent cap, the described pressure-bearing rod main diameter of integration connection
With passage diameter matches, pressure-bearing rod main body is circumferentially with the first sealing O-ring, is formed with passage inwall and seals, and described is logical
Air-vent cap is covered in the outlet of passage, and vent cap end face is provided with the second sealing O-ring, and to go out interruption-forming plane close with passage
Envelope.
Described spring housing is in pressure-bearing rod main body, and spring one end contacts with heat conduction cap, and the other end contacts with vent cap.
Described heat conduction cap one end is provided with the pressure-bearing rod for guiding and accommodates chamber, and described pressure-bearing rod main body one end is stretched into and held
Depression bar accommodates chamber.
It is provided with filter between described alloy receiving chamber and alloy discharge orifice.
Described filter is the metal powder sintered filter made.
It is provided with the screw thread for being connected with housing outside molten bolt valve.
Being inlaid with heat conduction cap on described heat conduction cap and seal O-ring, described heat conduction cap seals O-ring and is hermetically connected with the shell.
Compared with prior art, this utility model has the advantage that
(1) safety relief parallel connection when overtemperature and superpressure exists, and does not interfere with each other, when container is in normal operating pressure and temperature
When running under degree, it ensures tightly not leak, and once container inner pressure or temperature exceed regulation, and it just can be automatically inside container
Gas discharge rapidly, it is ensured that the use safety of gas cylinder and integrated cylinder valve；Overpressure protection is self-righting spring structure,
Repeatable effect.
(2) pressure-bearing rod seals with inwall and the outlet of passage simultaneously, good sealing effect.
(3) spring housing is in pressure-bearing rod main body, and spring one end contacts with heat conduction cap, and the other end contacts with vent cap, protects
Card spring does not shifts between heat conduction cap and vent cap, and reliability is high.
(4) heat conduction cap one end is provided with the pressure-bearing rod receiving chamber for guiding, and pressure-bearing rod main body one end is stretched into pressure-bearing rod and accommodated
Chamber, makes the track during displacement of pressure-bearing rod not offset, the beneficially recovery of pressure-bearing rod position after overpressure protection action.
(5) it is provided with filter between alloy receiving chamber and alloy discharge orifice, under Overpressure Condition, can guarantee that fusible alloy block
Will not gradually be extruded alloy discharge orifice because of creep effect, it is ensured that the air-tightness of device, increase the service life.
(6) molten bolt valve is threadeded with housing, it is easy to installs and controls the length that spring is initial.
(7) it is inlaid with heat conduction cap on heat conduction cap and seals O-ring, be used for being hermetically connected with the shell, it is ensured that gas is from safety relief
Hole is discharged, controls the runner of gas.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present embodiment；
Fig. 2 is the present embodiment operation principle schematic diagram when superpressure working environment；
Fig. 3 is the present embodiment operation principle schematic diagram when overtemperature working environment；
Reference:
1 is molten bolt valve；2 is heat conduction cap；3 seal O-ring for heat conduction cap；4 is pressure-bearing rod；41 is pressure-bearing rod main body；42 is logical
Air-vent cap；5 is spring；6 is the second sealing O-ring；7 is the first sealing O-ring；8 is passage；9 is safety relief hole；10 is shell
Body；11 is filter；12 is alloy discharge orifice；13 is fusible alloy block.
Detailed description of the invention
With specific embodiment, this utility model is described in detail below in conjunction with the accompanying drawings.The present embodiment is with this utility model
Implement premised on technical scheme, give detailed embodiment and concrete operating process, but guarantor of the present utility model
The scope of protecting is not limited to following embodiment.
Embodiment
As it is shown in figure 1, a kind of Combined type safety bleeder for high-pressure gas cylinder valve, on gas cylinder valve housing 10
Being provided with the safety relief hole 9 being in communication with the outside and lead to the passage 8 within gas cylinder, safety relief device is arranged on housing
On 10, for controlling the connected state between safety relief hole 9 and passage 8,
Safety relief device includes that molten bolt valve 1, heat conduction cap 2, pressure-bearing rod 4 and spring 5, molten bolt valve 1 are provided with alloy and accommodate
Chamber and alloy discharge orifice 12, alloy accommodates chamber and is used for placing fusible alloy block 13 and connecting with alloy discharge orifice 12, heat conduction cap 2 one
Holding relative with alloy receiving chamber, the other end is connected by spring 5 with pressure-bearing rod 4, pressure-bearing rod 4 and passage 8 form fit,
Pressure-bearing rod 4 includes pressure-bearing rod main body 41 and the vent cap 42 of integration connection, and pressure-bearing rod main body 41 diameter is with logical
Pore 8 diameter matches, pressure-bearing rod main body 41 is circumferentially with the first sealing O-ring 7, is formed with passage 8 inwall and seals, vent cap
42 end faces are provided with the second sealing O-ring 6, go out interruption-forming flat seal with passage 8, and vent cap 42 is arranged on pressure-bearing rod main body 41
Centre position, spring 5 is enclosed within pressure-bearing rod main body 41, and spring 5 one end contacts with heat conduction cap 2, and the other end connects with vent cap 42
Touching, heat conduction cap 2 one end is provided with the pressure-bearing rod for guiding and accommodates chamber, and pressure-bearing rod main body 41 one end is stretched into pressure-bearing rod and accommodated chamber.
Being provided with filter 11 between alloy receiving chamber and alloy discharge orifice 12, filter 11 is metal powder sintered making
Filter, when working environment is normal temperature, stop fusible alloy block 13 is discharged by filter 11 from alloy discharge orifice 12, has
The fusible alloy material creep phenomenon preventing tradition molten bolt valve appearance of effect, when working environment is for exceeding normal temperature, not shadow
Ring fusible alloy block 13 to discharge from alloy discharge orifice 12.
Being inlaid with heat conduction cap on heat conduction cap 2 and seal O-ring 3, heat conduction cap seals O-ring 3 and is tightly connected with housing 10.
The present embodiment working method be described below:
During installation, molten bolt valve 1 is fixing on the housing 10 by its external screw-thread, and by heat conduction cap 3 and spring 5 to pressure-bearing
Bar 4 side compression, makes spring 5 produce pressure (spring pressure is equal to cylinder valve operating pressure) thus prevents pressure-bearing rod 4 due to by height
Calm the anger the pressure of body and produce displacement and cause seal failure.It is outside that alloy discharge orifice 12 leads to housing 10, pressure-bearing rod main body 41 1
End inserts in passage 8, forms axial seal, and vent cap 42 covers in the outlet of passage 8, goes out interruption-forming with passage 8
Flat seal.
During as in figure 2 it is shown, high pressure gas pressure of the inside of a bottle exceedes operating pressure, pressure-bearing rod 4 stress balance is broken, pressure-bearing rod 4
Overall by the side displacement of guide hot tap, thus away from passage 8, first seals O-ring 7 will be moved out of outside passage, thus cause close
Envelope lost efficacy, and in making bottle, gas is from passage 8.Seal the sealing function of O-ring 3 due to heat conduction cap again, gas is guided so that it is from peace
Full escape orifice 9 flows out.In figure, arrow represents airflow direction.
Along with in gas cylinder, gas flows out from safety relief hole 9, when gas pressure of the inside of a bottle is gradually decrease to operating pressure, pressure-bearing rod
4 and first seal O-ring 7 resets under the active force of spring 5, and first seals O-ring 7 returns to initial position, and again forms sealing.
Overpressure relief protection be one can repeated device.
During as it is shown on figure 3, temperature exceedes operating temperature in gas cylinder, fusible alloy block 13 melts and (becomes liquid from solid-state
State), heat conduction cap 2 produces displacement under spring 5 active force, and extruding fusible alloy block 13 makes it flow out from alloy discharge orifice 12, holds
Depression bar 4 is away from passage 8 under bottle internal gas pressure thrust, and first seals O-ring 7 will be moved out of outside passage, thus cause close
Envelope lost efficacy, and in making bottle, gas is discharged to safety relief hole 9 from passage 8.In figure, arrow represents airflow direction.
Overtemperature prote is disposable protection, the most reciprocally uses (owing to overtemperature situation mostly is breaking out of fire).
Alloy discharge orifice 12 makes alloy to flow out faster, and the speed that quickening product overtemperature is released be (alloy discharge orifice 12
Quantity can more require to change).Molten bolt valve, also dependent on the interface requirement of cylinder valve, is processed different screw threads and is installed with cylinder valve.Easily
Fused gold bullion 13 requires to select fusion temperature also dependent on using.
Claims (8)
1., for a Combined type safety bleeder for high-pressure gas cylinder valve, described gas cylinder valve housing (10) is provided with
The safety relief hole (9) that is in communication with the outside and lead to the passage (8) within gas cylinder, described safety relief device and shell
Body (10) connects, and is used for controlling the connected state between safety relief hole (9) and passage (8),
It is characterized in that, described safety relief device includes molten bolt valve (1), molten bolt cap (2), pressure-bearing rod (4) and spring (5),
Described molten bolt valve (1) is provided with alloy discharge orifice (12) and is used for placing the alloy receiving chamber of fusible alloy block (13), described
Alloy accommodate chamber and connect with alloy discharge orifice (12), it is relative to melt bolt cap (2) one end and alloy receiving chamber, the other end and pressure-bearing rod
(4) being connected by spring (5), pressure-bearing rod (4) is flexibly connected with passage (8), is provided with therebetween sealing structure.
A kind of Combined type safety bleeder for high-pressure gas cylinder valve the most according to claim 1, it is characterised in that institute
The pressure-bearing rod (4) stated includes pressure-bearing rod main body (41) and vent cap (42), the described pressure-bearing rod main body of integration connection
(41) diameter and passage (8) diameter matches, pressure-bearing rod main body (41) is circumferentially with the first sealing O-ring (7), with passage (8)
Inwall is formed and seals, and described vent cap (42) end face is provided with the second sealing O-ring (6), goes out interruption-forming plane with passage (8)
Seal.
A kind of Combined type safety bleeder for high-pressure gas cylinder valve the most according to claim 2, it is characterised in that institute
The spring (5) stated is enclosed within pressure-bearing rod main body (41), and spring (5) one end contacts with molten bolt cap (2), the other end and vent cap
(42) contact.
A kind of Combined type safety bleeder for high-pressure gas cylinder valve the most according to claim 2, it is characterised in that institute
Molten bolt cap (2) one end stated is provided with the pressure-bearing rod for guiding and accommodates chamber, and pressure-bearing is stretched in described pressure-bearing rod main body (41) one end
Bar accommodates chamber.
A kind of Combined type safety bleeder for high-pressure gas cylinder valve the most according to claim 1, it is characterised in that institute
It is provided with filter (11) between alloy receiving chamber and the alloy discharge orifice (12) stated.
A kind of Combined type safety bleeder for high-pressure gas cylinder valve the most according to claim 5, it is characterised in that institute
The filter (11) stated is the metal powder sintered filter made.
A kind of Combined type safety bleeder for high-pressure gas cylinder valve the most according to claim 1, it is characterised in that molten
Bolt valve (1) is outside is provided with the screw thread for being connected with housing (10).
A kind of Combined type safety bleeder for high-pressure gas cylinder valve the most according to claim 1, it is characterised in that
Being inlaid with molten bolt cap on described molten bolt cap (2) and seal O-ring (3), described molten bolt cap seals O-ring (3) and seals with housing (10)
Connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620552276.5U CN205715862U (en) | 2016-06-07 | 2016-06-07 | A kind of Combined type safety bleeder for high-pressure gas cylinder valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620552276.5U CN205715862U (en) | 2016-06-07 | 2016-06-07 | A kind of Combined type safety bleeder for high-pressure gas cylinder valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205715862U true CN205715862U (en) | 2016-11-23 |
Family
ID=57301288
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620552276.5U Active CN205715862U (en) | 2016-06-07 | 2016-06-07 | A kind of Combined type safety bleeder for high-pressure gas cylinder valve |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107289163A (en) * | 2017-06-30 | 2017-10-24 | 上海百图低温阀门有限公司 | Automobile-used high pressure compressed hydrogen cylinder safety device |
| CN108443548A (en) * | 2018-05-15 | 2018-08-24 | 江苏天海特种装备有限公司 | A kind of high pressure gas fusible alloy pressure relief device |
| CN109282062A (en) * | 2017-07-21 | 2019-01-29 | 凯迈（洛阳）气源有限公司 | Temperature, pressure safety valve |
| CN109469755A (en) * | 2018-12-14 | 2019-03-15 | 江苏天海特种装备有限公司 | Fillers for dissolved acetylene cylinder solidifying pressure control device |
| CN112951646A (en) * | 2021-03-18 | 2021-06-11 | 国网河南省电力公司南阳供电公司 | SF6 circuit breaker |
| CN113790393A (en) * | 2021-09-10 | 2021-12-14 | 张家港富瑞阀门有限公司 | Relief device, high-pressure hydrogen integrated cylinder valve with relief device and relief method |
| CN114198347A (en) * | 2021-12-15 | 2022-03-18 | 中国石化销售股份有限公司华南分公司 | Hydraulic control system of safety cut-off valve |
| CN114321466A (en) * | 2021-12-15 | 2022-04-12 | 中国石化销售股份有限公司华南分公司 | Fireproof relief valve |
| CN114678651A (en) * | 2022-04-14 | 2022-06-28 | 北京科易动力科技有限公司 | Explosion-proof valve and battery pack with same |
| CN114744361A (en) * | 2022-04-14 | 2022-07-12 | 北京科易动力科技有限公司 | Ejector pin type explosion-proof valve and battery pack with same |
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2016
- 2016-06-07 CN CN201620552276.5U patent/CN205715862U/en active Active
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107289163A (en) * | 2017-06-30 | 2017-10-24 | 上海百图低温阀门有限公司 | Automobile-used high pressure compressed hydrogen cylinder safety device |
| CN109282062A (en) * | 2017-07-21 | 2019-01-29 | 凯迈（洛阳）气源有限公司 | Temperature, pressure safety valve |
| CN108443548A (en) * | 2018-05-15 | 2018-08-24 | 江苏天海特种装备有限公司 | A kind of high pressure gas fusible alloy pressure relief device |
| CN109469755A (en) * | 2018-12-14 | 2019-03-15 | 江苏天海特种装备有限公司 | Fillers for dissolved acetylene cylinder solidifying pressure control device |
| CN112951646B (en) * | 2021-03-18 | 2022-09-09 | 国网河南省电力公司南阳供电公司 | SF6 circuit breaker |
| CN112951646A (en) * | 2021-03-18 | 2021-06-11 | 国网河南省电力公司南阳供电公司 | SF6 circuit breaker |
| CN113790393A (en) * | 2021-09-10 | 2021-12-14 | 张家港富瑞阀门有限公司 | Relief device, high-pressure hydrogen integrated cylinder valve with relief device and relief method |
| CN114198347A (en) * | 2021-12-15 | 2022-03-18 | 中国石化销售股份有限公司华南分公司 | Hydraulic control system of safety cut-off valve |
| CN114321466A (en) * | 2021-12-15 | 2022-04-12 | 中国石化销售股份有限公司华南分公司 | Fireproof relief valve |
| CN114198347B (en) * | 2021-12-15 | 2024-03-19 | 中国石油化工股份有限公司 | Safety cut-off valve hydraulic control system |
| CN114321466B (en) * | 2021-12-15 | 2024-03-19 | 中国石油化工股份有限公司 | Fireproof relief valve |
| CN114678651A (en) * | 2022-04-14 | 2022-06-28 | 北京科易动力科技有限公司 | Explosion-proof valve and battery pack with same |
| CN114744361A (en) * | 2022-04-14 | 2022-07-12 | 北京科易动力科技有限公司 | Ejector pin type explosion-proof valve and battery pack with same |
| CN114744361B (en) * | 2022-04-14 | 2024-04-19 | 北京科易动力科技有限公司 | Ejector pin type explosion-proof valve and battery pack with same |
| CN114678651B (en) * | 2022-04-14 | 2024-04-19 | 北京科易动力科技有限公司 | Explosion-proof valve and battery pack with same |
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