CN101780870A - Vertical coaxial anti-explosion fire-retardant breather valve - Google Patents
Vertical coaxial anti-explosion fire-retardant breather valve Download PDFInfo
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- CN101780870A CN101780870A CN200910010278A CN200910010278A CN101780870A CN 101780870 A CN101780870 A CN 101780870A CN 200910010278 A CN200910010278 A CN 200910010278A CN 200910010278 A CN200910010278 A CN 200910010278A CN 101780870 A CN101780870 A CN 101780870A
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Abstract
The invention belongs to fire-retardant ventilation equipment of a petroleum storage tank, which consists of an anti-explosion flame arrester and a breather valve. The flame arrester is positioned at the top and plays a role in preventing explosion first and then preventing fire. The top of a breather valve cavity consisting of a vacuum valve and a pressure valve is provided with a pressure cavity sealing guide sleeve cover. The vertical movement of a vacuum valve disk is restrained by a guide sleeve of the pressure cavity sealing guide sleeve cover, and the vertical movement of a pressure valve disk is restrained by a guide rail of the vacuum valve disk. The fire-retardant ventilation equipment has reasonable design. Particularly, the pressure cavity sealing guide sleeve cover at the breather valve further plays a role in blocking the breather valve and the anti-explosion flame arrester, effectively adds the functions of flame arrest and explosion prevention, and enhances the safety and reliability of the whole equipment. The vertical coaxial symmetrical mounting structure stabilizes the center of the equipment; and the pressure valve disk and the vacuum valve disk are stressed uniformly so as to prolong the service life of the equipment, reduce the maintenance frequency and the production cost, facilitate assembly and disassembly, facilitate the operation and maintenance of a tank top and improve the production efficiency.
Description
One, technical field
The invention belongs to back-fire relief draft equipment---the vertical coaxial anti-explosion fire-retardant breather valve of petroleum storage tank, it is installed on the petroleum storage tank, can guarantee that back-fire relief ventilates, and guarantees that the interior pressure of petroleum storage tank is in a safe condition, and can reduce the evaporation loss of oil product.
Two, background technology
According to the regulation of country and industry relevant criterion, the standing tank of class AB liquid should be provided with flame trap and breathing valve.Therefore as can be seen, flame trap and breathing valve are indispensable safety measure of storage tank and equipment such as oil product or chemical industry articles for use.Antiexplosion and fire-stopping unit is to stop jar outer flame to enter, to guarantee the safety of storage tank.And breathing valve can adjust and safeguard storage tank air pressure self-equalizing, guarantees that storage tank avoids wrecking when superpressure or vacuum, and can reduce the volatilization and the consume of jar interior medium.The anti-explosion fire-retardant breather valve great majority that use on the petroleum chemical industry storage tank are the bottoms that flame trap are positioned over breathing valve at present, are connected with storage tank, and the respiratory of oil product or other chemical mediums at first passes through Antiexplosion and fire-stopping unit, passes through breathing valve again.Because it is very near that Antiexplosion and fire-stopping unit links to each other with storage tank, because of the autohemagglutination of medium the choking phenomenon of condensing appears through regular meeting, and passage is not smooth, makes breathing valve work ineffective, so occur potential safety hazard such as the flat jar of storage tank easily.In addition, what above-mentioned anti-explosion fire-retardant breather valve generally adopted is that level or side position are arranged, will cause equipment integral centre-of gravity shift like this, and not in the center of base attachment flange, cause tank top pressurized inequality, extremely inconvenient in the loading and unloading or the maintenance of tank top, side direction cleaning difficulty, side direction is keeped in repair, replacing parts operation easier is big, has brought very big hidden danger for the safety of operation of operating personal.
Give a kind of petroleum storage tank anti-explosion fire-retardant breather valve of breathing behind the first back-fire relief of Antiexplosion and fire-stopping unit and breathing valve that integrates in the prior art, though the pressure valve disc of the Antiexplosion and fire-stopping unit of this valve and breathing valve, vacuum valve disc are coaxial arrangement, but " the exhaling " of this valve and the gas flow channel of " suction " are located at this side of valve body, what make pressure valve disc and vacuum valve disc stressedly is in inhomogeneous state for a long time, its guide rod also is in uneven strained condition, will directly cause guide rod biasing or flank wear and pressure valve and vacuum valve were more early lost efficacy.In addition, the vacuum valve of this technology is following, and pressure valve is last, and the sucking hole of its vacuum valve is less than the expiratory port of pressure valve, and the circulation of the pneumostome of protective cover is very little, also is easily to cause one of flat jar reason the structure hidden danger that this has been proved in production practice by the same industry.Particularly only there is screw at vacuum pan seat and pressure disc seat place and does not have the pressing plate circle in this technology, because long-term winter-spring season changes and a jar interior medium temperature changes, make the dish seat that the fitfull distortion often take place, build-up of pressure valve disc or vacuum valve disc can not reach the leak free effect with the dish seat, build-up of pressure valve disc or vacuum valve disc or while or the single normally open that is in are bound to, and do not have the function of " exhaling " and " suction ", cause the waste of medium, the scrapping of equipment.If valve seat lost efficacy and to change, the level levelling of dish thereby the normal operation of the valve that can't ensure respiration can't be correctly determined in the operation that the scene can't be correct.
Three, summary of the invention
The purpose of this invention is to provide a kind of compact conformation, integrate the anti-explosion fire-retardant breather valve of the vertical coaxial symmetric arrangement of anti-explosion fire-retardant and respiratory function, to solve above shortcomings in the background technology.
The present invention includes with protecting cover Antiexplosion and fire-stopping unit and breathing valve.Its Antiexplosion and fire-stopping unit is positioned at the valve port place at body skin top, plays the function of breathing behind the first anti-explosion fire; Its breathing valve comprises pressure valve and vacuum valve, and its pressure valve disc and vacuum valve disc are connected by leading static parts and breathing valve cavity.Characteristics of the present invention are that described breathing valve is provided with pressure chamber and plasmas channel in valve chamber, are sealed on the valve chamber top with pressure chamber sealing guide pin bushing lid; Vacuum valve is installed on the sucking hole place, top of plasmas channel in the valve chamber, and pressure valve is installed on the expiratory port place of plasmas channel lower end in the valve chamber, makes and forms gas channel in the valve chamber; And the guide rail that connects the vacuum valve disc is positioned at the guide pin bushing of pressure chamber sealing guide pin bushing lid, make the upper and lower guide pin bushing constraint of moving the chamber sealing guide pin bushing lid that is stressed of vacuum valve disc, the guide rod that connects the pressure valve disc is positioned at the guide rail of vacuum valve disc, makes the soil of pressure valve disc, following moving retrained by the guide rail of vacuum valve disc.The pressure chamber sealing guide pin bushing lid of Antiexplosion and fire-stopping unit of the present invention, breathing valve, vacuum valve, pressure valve constitute the coaxial symmetric arrangement of integral vertical type.
The present invention is reasonable in design, and top is Antiexplosion and fire-stopping unit, and the bottom is a breathing valve, has realized the best safety scheme of breathing behind the first back-fire relief.Because Antiexplosion and fire-stopping unit exports away from storage tank, avoided the autohemagglutination phenomenon of oil product medium generation from structure.Particularly the pressure chamber at breathing valve place sealing guide pin bushing lid has further played the effect that intercepts breathing valve and Antiexplosion and fire-stopping unit, made it to form the cavity of two difference in functionalitys, more can increase the explosion-proof function of back-fire relief effectively, further, strengthen the safety performance of entire equipment than the direct scheme that communicates with Antiexplosion and fire-stopping unit of pressure valve, vacuum valve of background technology more.Vertical coaxial symmetry mounting structure of the present invention has improved the setting of gas flow channel, makes pressure valve disc and vacuum valve disc stressed even, has prolonged service life of the present invention, has reduced the number of times and the productive costs of repair and maintenance, has improved production efficiency.Vertical coaxial symmetry mounting structure of the present invention makes its barycentre steadiness, is easy to Assembly ﹠Disassembly, is convenient to the tank deck Operation and Maintenance.
Four, description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the structural representation of the Antiexplosion and fire-stopping unit among Fig. 1;
Fig. 3 is the structural representation of the breathing valve among Fig. 1;
Fig. 4 is the C--C section-drawing among Fig. 1.
Five, the specific embodiment
The vertical coaxial anti-explosion fire-retardant breather valve that provides among Fig. 1 is made up of Antiexplosion and fire-stopping unit 3 and breathing valve.The bottom of body skin 7 of the present invention is and the joining adapter flange of storage tank.Breathing valve is installed in the body skin 7 of the present invention, and Antiexplosion and fire-stopping unit 3 is installed on the top of body skin 7.Direction of arrow A among Fig. 1 is " exhaling " action gas flow paths, and B is " suction " action gas flow paths.As shown in Figure 2, Antiexplosion and fire-stopping unit 3 is linked together by bolt of long stem 9 by flame retardant bed seat 13, flame retardant bed 12 and flame retardant bed pressing plate circle 10 and forms.11,14 be tie bolt.The flame retardant bed 12 of Antiexplosion and fire-stopping unit 3 adopts the double-deck oblique wave of corrosion-resistant steel anti-explosion fire to twine wave disc.On the top of Antiexplosion and fire-stopping unit 3 Air Filter 2 is installed, protective cover 1 passes through bolted connection, cover on outside Air Filter 2 and the Antiexplosion and fire-stopping unit 3, and formed pneumostome of the present invention with body skin 7, can guarantee to enter the air cleaner of tank interior like this, and can prevent that sleet, flying bird and other impurity from entering in the tank body.As shown in Figure 3, the breathing valve in the body skin 7 of the present invention is made up of valve chamber 21, vacuum valve, pressure valve and pressure chamber sealing guide pin bushing lid 4.Be provided with pressure chamber 15 and plasmas channel 29 in the valve chamber 21, be sealed on valve chamber 21 tops with pressure chamber sealing guide pin bushing lid 4.The vacuum valve that is positioned at plasmas channel 29 top sucking holes is made up of vacuum valve disc 5, guide rail 18, vacuum pan seat 26; The guide rail 18 that connects vacuum valve disc 5 is positioned at the guide pin bushing of pressure chamber sealing guide pin bushing lid 4; The vacuum pan seat 26 of vacuum valve disc 5 is fixed by bolts in the seat holder 28 by pressing plate circle 27, can adjust the levelness of its dish seat mouthful circumference by its bolt.The pressure valve that is positioned at the expiratory port place of plasmas channel 29 is made up of pressure valve disc 6, pressure disc seat 36, guide rod 32; The guide rod 32 that connects pressure valve disc 6 is positioned at guide rail 18, makes guide rod 32 drive pressure valve disc 6 upper and lower moving.The pressure disc seat 36 of pressure valve disc 6 is fixed by bolts on the pallet 24 by pressing plate circle 33, adjusts the planeness of its dish seat mouthful circumference by its bolt.Above-mentioned pressure valve disc and vacuum valve disc are connected with valve chamber 21 by leading static parts 8.16,20 be bolt.For preventing freezed in winter, be embedded with nonmetal valve coil 25,34 on vacuum valve disc 5 and the pressure valve disc 6 respectively, guide rail 18 and the guide rod 32 outer non-metal sliding sleeves 17,31 that are surrounded by respectively; Nonmetal valve coil 25,34 and non-metal sliding sleeve 17,31 and vacuum pan seat 26, pressure disc seat 36, non-metallic bushings 19,30 all adopt anti-freeze non-metal fluorine material to make, guaranteed that the present invention is in cold normal operation in winter, to guarantee the equilibrium of pressure in the storage tank.For guaranteeing the unobstructed of function of exhaling, inhale of the present invention, avoid the generation of flat jar of phenomenon, the vacuum valve sucking hole size of breathing valve of the present invention should be greater than the expiratory port size of pressure valve; And each several part structure of the present invention should satisfy following size relationship: D1: D0=1, D2: D0=1.2～1.5, D3: D0=2.25, D4: D0=2, D5: D0=4, H1: H0=2.25, H2: H0=3.8, H3: H0=5.2.
(D0 is the flange vent internal diameter that links with storage tank, D1 is a breathing valve expiratory port internal diameter, D2 is a breathing valve sucking hole internal diameter, D3 is a breathing valve pressure cavity internal diameter, D4 is an Antiexplosion and fire-stopping unit effective ventilation mouth internal diameter, D5 protective cover pneumostome of the present invention internal diameter, H0 is the flange face that links with storage tank and the distance of breathing valve expiratory port horizontal surface, H1 is the flange face that links with storage tank and the distance of breathing valve sucking hole horizontal surface, H2 is the distance of flame trap effective ventilation face lower surface apart from flange, and H3 is the distance of protective cover inner top apart from flange).The relation of said structure guarantees that storage tank outlet order is ascending, can guarantee the unimpeded of respiratory gas of the present invention.
The present invention is installed on the storage tank, when pressure valve disc 6 response pressures of tank inner pressure overpressure valve, pressure valve disc 6 moves up, and the gas of exhalation is discharged (seeing the A channel among Fig. 1) by body skin 7 exocoels to Antiexplosion and fire-stopping unit 3, Air Filter 2, protective cover 1 below pneumostome; When tank inner pressure during less than pressure valve disc 6 response pressures, the pressure valve disc falls after rise to original position; Equally, when negative pressure value in the storage tank during greater than the vacuum valve disc response pressure of vacuum valve, vacuum valve disc 5 is opened, air enters in the jar (seeing the B passage among Fig. 1) through the passage of protective cover 1 below pneumostome through exocoel, plasmas channel 29 and the pressure chamber 23 of Air Filter 2, Antiexplosion and fire-stopping unit 3, body skin 7, when tank inner pressure gos up, when making jar internal pressure less than vacuum valve disc response pressure, vacuum valve disc 5 falls after rise to original position.
When there is burning things which may cause a fire disaster above-mentioned anti-explosion fire-retardant breather valve outside; follow the vacuum valve disc of breathing valve and moving up and down of pressure valve disc; burning things which may cause a fire disaster can be attracted in the jar; but owing to be provided with Antiexplosion and fire-stopping unit; stoped entering of burning things which may cause a fire disaster effectively; particularly be provided with pressure chamber sealing guide pin bushing lid 4 on the breathing valve again; further played the effect of isolating breathing valve and Antiexplosion and fire-stopping unit; make the present invention form the cavity of two difference in functionalitys; more can strengthen the function of back-fire relief effectively; further increased the safety of entire equipment; unfailing performance has reached the fire safety of protecting oil product storage tank.
Claims (7)
1. vertical coaxial anti-explosion fire-retardant breather valve, the Antiexplosion and fire-stopping unit (3) and the breathing valve that comprise band protective cover (1), its Antiexplosion and fire-stopping unit (3) is positioned at the valve port place at body skin (7) top, its breathing valve comprises pressure valve and vacuum valve, and its pressure valve disc and vacuum valve disc are connected with the breathing valve cavity by leading static parts (8); It is characterized in that: described breathing valve is provided with pressure chamber (24) and plasmas channel (29) in valve chamber, is sealed on the valve chamber top with pressure chamber sealing guide pin bushing lid (4); Vacuum valve is installed on sucking hole place, valve chamber (21) interior plasmas channel top, and pressure valve is installed on the expiratory port place of the interior plasmas channel of valve chamber (21) lower end, makes the passage that has formed gas flow in the valve chamber; And the guide rail (18) that connects vacuum valve disc (5) is positioned at the guide pin bushing of pressure chamber sealing guide pin bushing lid (4), make the upper and lower guide pin bushing constraint of moving the chamber sealing guide pin bushing lid (4) that is stressed of vacuum valve disc (5), the guide rod (32) that connects pressure valve disc (6) is positioned at the guide rail (18) of vacuum valve disc (5), and the upper and lower guide rail (18) that is subjected to vacuum valve disc (5) that moves of pressure valve disc (6) is retrained.
2. vertical coaxial anti-explosion fire-retardant breather valve according to claim 1 is characterized in that: pressure chamber sealing guide pin bushing lid (4), the vacuum valve of Antiexplosion and fire-stopping unit of the present invention (3), breathing valve, pressure valve constitute the coaxial symmetric arrangement of integral vertical type.
3. vertical coaxial anti-explosion fire-retardant breather valve according to claim 1 and 2 is characterized in that: the vacuum valve disc mouth size of described breathing valve is greater than pressure valve disc mouth size.
4. according to the described vertical coaxial anti-explosion fire-retardant breather valve of one of claim 1-3, it is characterized in that: the flame retardant bed (12) of described Antiexplosion and fire-stopping unit (3) adopts the double-deck oblique wave of corrosion-resistant steel anti-explosion fire to twine wave disc.
5. according to the described vertical coaxial anti-explosion fire-retardant breather valve of one of claim 1-4, it is characterized in that: the vacuum pan seat (26) of described vacuum valve disc (5) is fixed by bolts in the seat holder (28) by pressing plate circle (27); The pressure disc seat (36) of pressure valve disc (6) is fixed by bolts on the pan arrest (24) by pressing plate circle (33).
6. according to the described vertical coaxial anti-explosion fire-retardant breather valve of one of claim 1-5, it is characterized in that: Air Filter (2) is installed on the top of Antiexplosion and fire-stopping unit (3).
7. according to the described vertical coaxial anti-explosion fire-retardant breather valve of one of claim 1-6, it is characterized in that: structure of the present invention should satisfy following size relationship:
D1∶D0＝1，D2∶D0＝1.2～1.5，D3∶D0＝2.25，D4∶D0＝2，D5∶D0＝4，H1∶H0＝2.25，H2∶H0＝3.8，H3.H0＝5.2。(D0 is the flange vent internal diameter that links with storage tank, D1 is a breathing valve expiratory port internal diameter, D2 is a breathing valve sucking hole internal diameter, D3 is a breathing valve pressure cavity internal diameter, D4 is an Antiexplosion and fire-stopping unit effective ventilation internal diameter, D5 protective cover pneumostome of the present invention internal diameter, H0 is the flange face that links with storage tank and the distance of breathing valve expiratory port horizontal surface, H1 is the flange face that links with storage tank and the distance of breathing valve sucking hole horizontal surface, H2 is the distance of flame trap effective ventilation face lower surface apart from flange, and H3 is the distance of protective cover inner top apart from flange).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910010278A CN101780870A (en) | 2009-01-21 | 2009-01-21 | Vertical coaxial anti-explosion fire-retardant breather valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910010278A CN101780870A (en) | 2009-01-21 | 2009-01-21 | Vertical coaxial anti-explosion fire-retardant breather valve |
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| Publication Number | Publication Date |
|---|---|
| CN101780870A true CN101780870A (en) | 2010-07-21 |
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|---|---|---|---|
| CN200910010278A Pending CN101780870A (en) | 2009-01-21 | 2009-01-21 | Vertical coaxial anti-explosion fire-retardant breather valve |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107323901A (en) * | 2017-07-03 | 2017-11-07 | 赵秀波 | A kind of marine storage tank with timing airing function |
| CN107420597A (en) * | 2017-06-15 | 2017-12-01 | 长江大学 | A kind of intelligent breathing valve |
| CN113294570A (en) * | 2021-05-26 | 2021-08-24 | 辽宁石油化工大学 | Fire-retardant breather valve with negative pressure protection function |
| CN114183571A (en) * | 2021-12-14 | 2022-03-15 | 西南石油大学 | Integrated valve core breather valve capable of being maintained and maintained quickly |
| CN114427617A (en) * | 2020-09-23 | 2022-05-03 | 中国石油化工股份有限公司 | Integrated burning-resistant breather valve device |
| CN114593248A (en) * | 2022-02-18 | 2022-06-07 | 徐州八方安全设备有限公司 | Integrated long-time-combustion-resistant fire-retardant breather valve |
| CN116557771A (en) * | 2023-07-06 | 2023-08-08 | 苏州杜尔气体化工装备有限公司 | Ventilating flame-retardant explosion-proof device of LNG (liquefied Natural gas) normal-pressure storage tank |
| CN116951146A (en) * | 2023-09-21 | 2023-10-27 | 陕西皓疆图南能源科技有限公司 | Anti-freezing and breathing resistance integrated breather valve and application thereof |
-
2009
- 2009-01-21 CN CN200910010278A patent/CN101780870A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107420597A (en) * | 2017-06-15 | 2017-12-01 | 长江大学 | A kind of intelligent breathing valve |
| CN107323901A (en) * | 2017-07-03 | 2017-11-07 | 赵秀波 | A kind of marine storage tank with timing airing function |
| CN114427617A (en) * | 2020-09-23 | 2022-05-03 | 中国石油化工股份有限公司 | Integrated burning-resistant breather valve device |
| CN113294570A (en) * | 2021-05-26 | 2021-08-24 | 辽宁石油化工大学 | Fire-retardant breather valve with negative pressure protection function |
| CN114183571A (en) * | 2021-12-14 | 2022-03-15 | 西南石油大学 | Integrated valve core breather valve capable of being maintained and maintained quickly |
| CN114183571B (en) * | 2021-12-14 | 2023-08-11 | 西南石油大学 | Valve core breather valve capable of achieving rapid maintenance and repair |
| CN114593248A (en) * | 2022-02-18 | 2022-06-07 | 徐州八方安全设备有限公司 | Integrated long-time-combustion-resistant fire-retardant breather valve |
| CN116557771A (en) * | 2023-07-06 | 2023-08-08 | 苏州杜尔气体化工装备有限公司 | Ventilating flame-retardant explosion-proof device of LNG (liquefied Natural gas) normal-pressure storage tank |
| CN116557771B (en) * | 2023-07-06 | 2023-09-12 | 苏州杜尔气体化工装备有限公司 | Ventilating flame-retardant explosion-proof device of LNG (liquefied Natural gas) normal-pressure storage tank |
| CN116951146A (en) * | 2023-09-21 | 2023-10-27 | 陕西皓疆图南能源科技有限公司 | Anti-freezing and breathing resistance integrated breather valve and application thereof |
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Open date: 20100721 |