CN113251312A - Flame-retardant storage tank breather valve - Google Patents
Flame-retardant storage tank breather valve Download PDFInfo
- Publication number
- CN113251312A CN113251312A CN202110754440.6A CN202110754440A CN113251312A CN 113251312 A CN113251312 A CN 113251312A CN 202110754440 A CN202110754440 A CN 202110754440A CN 113251312 A CN113251312 A CN 113251312A
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- flame
- retardant
- storage tank
- pipe
- breather valve
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/04—Arrangement or mounting of valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/24—Preventing accumulation of dirt or other matter in the pipes, e.g. by traps, by strainers
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- 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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
- F16L57/04—Protection of pipes or objects of similar shape against external or internal damage or wear against fire or other external sources of extreme heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2260/00—Purposes of gas storage and gas handling
- F17C2260/04—Reducing risks and environmental impact
- F17C2260/042—Reducing risk of explosion
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The invention discloses a flame-retardant storage tank breather valve, which belongs to the technical field of breather valves.A gas-filtering flame-retardant component is arranged in a flame-retardant pipe, under the normal state, an internal and external double-layer gas-filtering layer plays roles of dust fall and impurity particle adsorption for inlet and outlet gas, and also plays roles of reducing temperature and effectively preventing a fire source from entering a valve body by depending on cooling liquid filled in the internal side of the gas-filtering layer.
Description
Technical Field
The invention relates to the technical field of breather valves, in particular to a flame-retardant type storage tank breather valve.
Background
According to the regulations of the national standard petrochemical industry enterprise design fire protection code (GB 50160-92): a fire damper and a breather valve are arranged on the fixed storage tanks for the A and B liquids. The visible breather valve and the flame arrester are indispensable safety facilities of the storage tank. The breather valve not only can maintain the air pressure balance of the storage tank, ensure that the storage tank is prevented from being damaged when the storage tank is in overpressure or vacuum, but also can reduce the volatilization and the loss of a medium in the tank.
The existing breather valve can generate a driving force to the positive pressure valve element due to the increase of the pressure inside the storage tank when the pressure inside the storage tank is greater than the pressure of the outside air, and the positive pressure valve element is opened, so that the gas is sprayed out to ensure the balance of the air pressure inside and outside the tank.
However, when a medium of a liquid hazardous chemical substance is injected into the storage tank, or the external environment temperature of the storage tank is abnormal, if the breathing valve is opened, the external air is introduced from the ventilation inlet, and if abnormal phenomena such as open flame and the like occur, the external air is easy to combust and explode, so that good flame-retardant and fireproof effects are difficult to achieve, and the safety coefficient of the external air still needs to be improved.
Therefore, the flame-retardant storage tank breather valve is provided to effectively solve the problems in the prior art.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide a flame-retardant storage tank breather valve, wherein a gas-filtering flame-retardant component is arranged in a flame-retardant pipe, so that the breather valve not only has the functions of dust fall and impurity particle adsorption, but also has the functions of cooling and effectively preventing a fire source from entering the valve body under the normal state, and under the abnormal conditions of high temperature, open fire and the like, flame-retardant filler is brought out and distributed on porous adsorption pads on two sides under the action of gas, and meanwhile, the cooling liquid in a water filtering bag overflows and is soaked on the porous adsorption pads, so that the double flame-retardant and fireproof effects are achieved.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A flame-retardant storage tank breather valve comprises a valve body, wherein the upper end and the lower end of the valve body are respectively provided with a valve cover and a flange, a negative pressure valve core and a positive pressure valve core are arranged inside the valve body, a ventilation cavity communicated with the negative pressure valve core and the positive pressure valve core is arranged inside the valve body, the outer end wall of the valve body is provided with a ventilation pipe connected with the ventilation cavity, the outer end of the ventilation pipe is provided with a flame-retardant pipe, an air-filtering flame-retardant component is arranged inside the flame-retardant pipe and comprises a heat conduction column, a plurality of flame-retardant rods and a pair of air-filtering layers, the heat conduction column is arranged inside the flame-retardant pipe, the flame-retardant rods are annularly distributed on the heat conduction column, the pair of air-filtering layers are distributed on the inner side and the outer side of the heat conduction column, the flame-retardant rods comprise an overflow pipe and a storage pipe, the overflow pipe is fixedly connected on the heat conduction column, a plurality of spray holes are arranged on the overflow pipe, and flame-retardant filler is filled inside the storage pipe, the gas filtering layer comprises a water passing filter bag and porous adsorption pads arranged on two sides of the water passing filter bag, and two adjacent porous adsorption pads are positioned on two sides of the flame retardant rod.
Furthermore, a plurality of discharge openings corresponding to the positions of the flame-retardant rods are formed in the outer end wall of the flame-retardant tube, sealing plugs are embedded in the discharge openings, the discharge openings correspond to the positions of the flame-retardant rods, the whole air-filtering flame-retardant component does not need to be detached from the flame-retardant tube, and therefore the storage tube can be replaced.
Furthermore, a plurality of flash holes corresponding to the positions of the jet holes are formed in the outer end wall of the storage tube, the inner wall of the storage tube is coated with a hot-melting covering layer, and a magnetic sealing block is arranged at the port position of the storage tube corresponding to the position of the discharge hole.
Furthermore, the heat conducting columns and the overflow pipes are made of heat conducting materials, and the hot melting cladding is made of hot melting materials.
Further, the flame-retardant filler is spherical particles formed by bonding a flame retardant and magnetic particles.
Furthermore, a plurality of the porous adsorption pads are all made of porous adsorption materials, and the outer side wall of the porous adsorption pad far away from one end of the flame-retardant rod is coated with a layer of high-temperature-resistant waterproof breathable film.
Furthermore, a plurality of magnetic blocks are distributed on the outer end walls of the pair of porous adsorption pads close to one side of the flame retardant rod.
Furthermore, the water passing filter bag comprises a waterproof breathable bag and a plurality of hot melting columns embedded on the end wall of the waterproof breathable bag, the waterproof breathable bag is attached between the pair of porous adsorption pads, and cooling liquid is filled in the waterproof breathable bag.
Furthermore, the hot melting column is of a hollow structure, and a filler is arranged in the hot melting column.
Furthermore, the filler is made of effervescent disintegrant, and the hot-melt column is also made of hot-melt material.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) this scheme is through setting up the fire-retardant component of gas of straining in fire-retardant intraductal, under normal condition, the bilayer of inside and outside setting strains the gas layer and both played the dust fall to business turn over gas, adsorb impurity particle's effect, rely on the coolant liquid of filling in its inboard again and play the cooling, effectively avoid the effect in the burning things which may cause a fire disaster admission valve body, when at high temperature or meet under the abnormal conditions such as naked light, high temperature makes the hot melt covering pyrolysis of storage pipe department, its inside fire-retardant filler is taken out under gaseous effect and distributes on the porous adsorption pad of both sides, play fire-retardant effect, meanwhile, overflow of the inside coolant liquid of crossing the water filter bag soaks on porous adsorption pad, further improve fire-retardant fireproof effect.
(2) The fire-retardant filler of this scheme is the globular granule that forms for bonding by fire retardant and magnetic particle, and it has a plurality of magnetism to inhale the piece to distribute on the outer end wall of a pair of porous adsorption pad that is located the medial side, and when fire-retardant filler spills over along with gas impact, the porous adsorption pad that is attached to there is magnetism to inhale the piece is favorable to playing magnetism and inhales the seizure effect to the fire-retardant filler that flies off, can realize that fire-retardant filler fully distributed on porous adsorption pad, improves fire behavior.
(3) This scheme inlays on crossing water filter bag and establishes a plurality of hot melt posts that distribute, under the abnormal conditions such as high temperature or with naked light, hot melt post pyrolysis overflows the filler that adopts effervescent disintegrant to make, the coolant liquid produces carbon dioxide with the filler reaction that exposes outside, the coolant liquid overflows and soaks on porous adsorption pad, improve porous adsorption pad humidity, and the carbon dioxide that overflows, as flame retardant gas, overflow in porous adsorption pad's hole, further improve fire-retardant fire behavior, and the carbon dioxide of outside impact can also be regarded as the auxiliary force who outwards takes out flame retardant filler.
(4) This scheme is the waterproof ventilated membrane of cladding one deck high temperature resistance on keeping away from the porous adsorption pad lateral wall of fire-retardant stick one end, and after the coolant liquid spills over and soaks on the porous adsorption pad of both sides, and the waterproof ventilated membrane that sets up effectively avoids the coolant liquid to spill over the inside and outside of fire-retardant pipe.
Drawings
FIG. 1 is a first perspective view of the present invention;
FIG. 2 is a second perspective view of the present invention;
FIG. 3 is an internal schematic view of the present invention;
FIG. 4 is a perspective view of the gas-filtering flame-retardant member of the invention;
FIG. 5 is an exploded view of the gas-filtered flame retardant component of the present invention;
fig. 6 is a partial sectional view at the magazine pipe of the present invention;
FIG. 7 is a first perspective view of the air filter of the present invention;
FIG. 8 is a second perspective view of the air filter of the present invention;
FIG. 9 is a schematic view of the interior of a heat-conducting column of the present invention in combination with one of the air-filtering layers;
fig. 10 is a schematic view showing the operation of the air-filtering flame-retardant member of the present invention in a high-temperature abnormal environment.
The reference numbers in the figures illustrate:
the fire-retardant heat-exchange valve comprises a valve body 1, a negative pressure valve core 101, a positive pressure valve core 102, a vent pipe 2, a flame-retardant pipe 3, a discharge port 301, a flame-retardant rod 4, a overflow pipe 401, spray orifices 4011, a stock pipe 402, a hot-melt cladding 4021, a gas filtering layer 5, a porous adsorption pad 501, a water filter bag 502, a coolant 5021, a hot-melt column 503, filler 5031, a heat-conducting column 6 and a flame-retardant filler 7.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
Example 1:
referring to fig. 1-3, a flame retardant type breathing valve for a storage tank includes a valve body 1, wherein a valve cover and a flange are respectively disposed at upper and lower ends of the valve body 1, the valve body 1 is connected to the storage tank through the flange, a negative pressure valve core 101 and a positive pressure valve core 102 are disposed inside the valve body 1, a vent cavity communicated with the negative pressure valve core 101 and the positive pressure valve core 102 is disposed inside the valve body 1, the breathing valve uses the opening and closing of the negative pressure valve core 101 and the positive pressure valve core 102 to achieve air suction and air outlet to ensure the balance of air pressure inside and outside the storage tank, and the internal structure and the working principle thereof are the prior art and will not be described herein.
Referring to fig. 3-5, the outer end wall of the valve body 1 is provided with a vent pipe 2 connected with the vent cavity, the outer end of the vent pipe 2 is provided with a flame retardant pipe 3, the flame retardant pipe 3 is internally provided with a gas-filtering flame retardant member, the gas-filtering flame retardant member is composed of a heat conduction column 6, a plurality of flame retardant rods 4 and a pair of gas-filtering layers 5, the heat conduction column 6 is installed in the flame retardant pipe 3, the plurality of flame retardant rods 4 are annularly distributed on the heat conduction column 6, the pair of gas-filtering layers 5 are distributed on the inner side and the outer side of the heat conduction column 6, under the condition of normal air suction and air outlet, the gas passes through the inner and outer double-layer gas-filtering layers 5 in sequence, and carries out multi-layer filtering on dust particles and harmful impurities in the gas, thereby effectively preventing the dust from blocking the vent pipe 2, effectively preventing dangerous particles from entering and exiting the breather valve, and reducing the danger coefficient.
Referring to fig. 5-6, the flame retardant rod 4 includes a flash tube 401 and a storage tube 402, the flash tube 401 is fixedly connected to the heat conducting column 6, the flash tube 401 is provided with a plurality of spray holes 4011, the storage tube 402 is filled with a flame retardant filler 7, the outer end wall of the flame retardant tube 3 is provided with a plurality of discharge ports 301 corresponding to the positions of the flame retardant rod 4, the discharge ports 301 are embedded with sealing plugs, the outer end wall of the storage tube 402 is provided with a plurality of flash holes corresponding to the positions of the spray holes 4011, and the inner wall of the storage tube 402 is coated with a hot melt cladding 4021.
Flame-retardant filler 7 is the globular granule that is formed by fire retardant and magnetic particle bonding, heat conduction post 6 and a plurality of overflow pipe 401 all adopt the heat conduction material to make, hot melt covering 4021 adopts hot melt material to make, when using, in leading-in storage pipe 402 of flame-retardant filler, cover the magnetism sealing block, place storage pipe 402 in overflow pipe 401, when under high temperature and meetting the naked light condition, heat conduction post 6 is fast with temperature transfer to fire-retardant stick 4 department, thereby be favorable to hot melt covering 4021's hot melt, after hot melt covering 4021 hot melt, at inspiratory in-process, gaseous leading-in storage pipe 402 is interior, take out flame-retardant filler 7, flame-retardant filler 7 distributes on porous adsorption pad 501, realize fire-retardant fire prevention.
Referring to fig. 2-3, a magnetic sealing block is disposed at a port of the storage pipe 402 corresponding to the discharge port 301, the discharge port 301 corresponds to the flame-retardant rod 4, the storage pipe 402 can be replaced without removing the whole gas-filtering flame-retardant member from the flame-retardant pipe 3, so as to improve the convenience, and a person skilled in the art can take and place the storage pipe 402 by using an external electromagnetic material by disposing the magnetic sealing block on the storage pipe 402.
Referring to fig. 5, the air filtering layer 5 includes a water passing filter bag 502 and porous adsorption pads 501 disposed on two sides of the water passing filter bag 502, two adjacent porous adsorption pads 501 are disposed on two sides of the flame retardant rod 4, the plurality of porous adsorption pads 501 are made of porous adsorption material, and a high temperature resistant waterproof breathable film is coated on the outer side wall of the porous adsorption pad 501 away from one end of the flame retardant rod 4 to isolate moisture.
The outer end walls of the pair of porous adsorption pads 501 close to one side of the flame retardant rod 4 are distributed with a plurality of magnetic absorption blocks, when the flame retardant filler overflows along with gas impact, the porous adsorption pads 501 attached with the magnetic absorption blocks are favorable for playing a magnetic absorption role on the scattered flame retardant filler 7, the flame retardant filler 7 is reduced and directly falls down due to gravity, the porous adsorption pads 501 distributed with the flame retardant filler 7 are improved in flame retardant and fireproof performances.
Referring to fig. 7-10, it should be emphasized that the water passing filter bag 502 includes a waterproof air permeable bag and a plurality of hot melting columns 503 embedded on an end wall thereof, the waterproof air permeable bag is attached between a pair of porous adsorption pads 501, the waterproof air permeable bag is filled with a cooling liquid 5021, the hot melting columns 503 are hollow, the hot melting columns 503 are filled with a filler 5031, the filler 5031 is made of an effervescent disintegrant, the hot melting columns 503 are made of a hot melting material, the hot melting columns 503 are hot melted in a high temperature or open fire environment, the cooling liquid 5021 inside the water passing filter bag 502 reacts with the exposed filler 5031 to generate carbon dioxide, on one hand, the cooling liquid 5021 overflows and is soaked on the porous adsorption pads 501 to improve the humidity of the porous adsorption pads 501, thereby facilitating temperature reduction and fire extinguishing, and the overflowed carbon dioxide, as a flame retardant gas, overflows and fills in pores of the porous adsorption pads 501 and the flame retardant tubes 3, further improving the flame-retardant and fireproof performance, and the carbon dioxide impacting outwards can also be used as auxiliary impact force for bringing out the flame-retardant filler 7.
The components used in the present invention are all standard components or components known to those skilled in the art, and the structure and principle thereof can be known to those skilled in the art through technical manuals or through routine experiments.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the equivalent replacement or change according to the technical solution and the modified concept of the present invention should be covered by the scope of the present invention.
Claims (10)
1. The utility model provides a fire-retardant type storage tank breather valve, includes valve body (1), the upper and lower end of valve body (1) is equipped with valve gap and flange respectively, valve body (1) inside is equipped with negative pressure case (101) and malleation case (102), its characterized in that: a ventilation cavity communicated with the negative pressure valve core (101) and the positive pressure valve core (102) is formed in the valve body (1), a ventilation pipe (2) connected with the ventilation cavity is formed in the outer end wall of the valve body (1), a flame-retardant pipe (3) is arranged at the outer end of the ventilation pipe (2), and a gas-filtering flame-retardant component is arranged in the flame-retardant pipe (3);
the gas filtering and flame retarding component consists of a heat conducting column (6), a plurality of flame retarding rods (4) and a pair of gas filtering layers (5), wherein the heat conducting column (6) is arranged in a flame retarding pipe (3), the flame retarding rods (4) are annularly distributed on the heat conducting column (6), the pair of gas filtering layers (5) are distributed on the inner side and the outer side of the heat conducting column (6), the flame retarding rods (4) comprise overflow pipes (401) and storage pipes (402), the overflow pipes (401) are fixedly connected to the heat conducting column (6), the overflow pipes (401) are provided with a plurality of spray holes (4011), and flame retarding fillers (7) are filled in the storage pipes (402);
the gas filtering layer (5) comprises a water filtering bag (502) and porous adsorption pads (501) arranged on two sides of the water filtering bag (502), and two adjacent porous adsorption pads (501) are positioned on two sides of the flame retardant rod (4).
2. The flame-retardant storage tank breather valve according to claim 1, wherein: a plurality of discharge openings (301) corresponding to the flame-retardant rods (4) are formed in the outer end wall of the flame-retardant pipe (3), and sealing plugs are embedded in the discharge openings (301).
3. The flame-retardant storage tank breather valve according to claim 2, wherein: the material storage device is characterized in that a plurality of overflow holes corresponding to the positions of the spray holes (4011) are formed in the outer end wall of the material storage pipe (402), the inner wall of the material storage pipe (402) is coated with a hot melt cladding (4021), and magnetic sealing blocks are arranged at the port positions of the material storage pipe (402) corresponding to the positions of the discharge hole (301).
4. The flame-retardant storage tank breather valve according to claim 3, wherein: the heat conducting columns (6) and the overflow pipes (401) are all made of heat conducting materials, and the hot melting cladding (4021) is made of hot melting materials.
5. The flame-retardant storage tank breather valve according to claim 1, wherein: the flame-retardant filler (7) is spherical particles formed by bonding a flame retardant and magnetic particles.
6. The flame-retardant storage tank breather valve according to claim 1, wherein: a plurality of the porous adsorption pads (501) are all made of porous adsorption materials, and the outer side wall of the porous adsorption pad (501) far away from one end of the flame retardant rod (4) is coated with a layer of high-temperature resistant waterproof breathable film.
7. The flame-retardant storage tank breather valve according to claim 1, wherein: a plurality of magnetic blocks are distributed on the outer end walls of the pair of porous adsorption pads (501) close to one side of the flame retardant rod (4).
8. The flame-retardant storage tank breather valve according to claim 1, wherein: the water passing filter bag (502) comprises a waterproof breathable bag and a plurality of hot melting columns (503) embedded on the end wall of the waterproof breathable bag, the waterproof breathable bag is attached between a pair of porous adsorption pads (501), and cooling liquid (5021) is filled in the waterproof breathable bag.
9. The flame-retardant storage tank breather valve according to claim 8, wherein: the hot-melt column (503) is of a hollow structure, and a filler (5031) is arranged in the hot-melt column (503).
10. The flame-retardant storage tank breather valve according to claim 9, wherein: the filler (5031) is made of effervescent disintegrant, and the hot-melt column (503) is also made of hot-melt material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110754440.6A CN113251312B (en) | 2021-07-05 | 2021-07-05 | Flame-retardant storage tank breather valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110754440.6A CN113251312B (en) | 2021-07-05 | 2021-07-05 | Flame-retardant storage tank breather valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113251312A true CN113251312A (en) | 2021-08-13 |
| CN113251312B CN113251312B (en) | 2021-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110754440.6A Active CN113251312B (en) | 2021-07-05 | 2021-07-05 | Flame-retardant storage tank breather valve |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2800011Y (en) * | 2005-04-19 | 2006-07-26 | 黄定山 | Explosion-proof flame-arresting breather valve |
| RU2327921C1 (en) * | 2006-11-03 | 2008-06-27 | Саратовское акционерное производственно-коммерческое открытое общество "НЕФТЕМАШ"-САПКОН | Vapour balancer for container |
| CN202165658U (en) * | 2011-05-31 | 2012-03-14 | 天津恒仁石油设备有限公司 | Explosion-proof and fire retardant breather valve |
| CN211059427U (en) * | 2019-12-19 | 2020-07-21 | 柏克流体科技(徐州)有限公司 | Fire-retardant breather valve |
| CN111765277A (en) * | 2020-06-23 | 2020-10-13 | 杭州远基自控阀门有限公司 | Fluorine-lined breather valve with acid and alkali resistance |
| CN212509685U (en) * | 2020-05-27 | 2021-02-09 | 温州中伟石化设备制造有限公司 | Explosion-proof back-fire relief breather valve |
| CN212899948U (en) * | 2020-08-13 | 2021-04-06 | 定州市东方石油设备有限公司 | Fire-retardant breather valve |
| CN112961443A (en) * | 2021-04-16 | 2021-06-15 | 程伟 | Assembled building structure heated board |
-
2021
- 2021-07-05 CN CN202110754440.6A patent/CN113251312B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2800011Y (en) * | 2005-04-19 | 2006-07-26 | 黄定山 | Explosion-proof flame-arresting breather valve |
| RU2327921C1 (en) * | 2006-11-03 | 2008-06-27 | Саратовское акционерное производственно-коммерческое открытое общество "НЕФТЕМАШ"-САПКОН | Vapour balancer for container |
| CN202165658U (en) * | 2011-05-31 | 2012-03-14 | 天津恒仁石油设备有限公司 | Explosion-proof and fire retardant breather valve |
| CN211059427U (en) * | 2019-12-19 | 2020-07-21 | 柏克流体科技(徐州)有限公司 | Fire-retardant breather valve |
| CN212509685U (en) * | 2020-05-27 | 2021-02-09 | 温州中伟石化设备制造有限公司 | Explosion-proof back-fire relief breather valve |
| CN111765277A (en) * | 2020-06-23 | 2020-10-13 | 杭州远基自控阀门有限公司 | Fluorine-lined breather valve with acid and alkali resistance |
| CN212899948U (en) * | 2020-08-13 | 2021-04-06 | 定州市东方石油设备有限公司 | Fire-retardant breather valve |
| CN112961443A (en) * | 2021-04-16 | 2021-06-15 | 程伟 | Assembled building structure heated board |
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| Publication number | Publication date |
|---|---|
| CN113251312B (en) | 2021-09-07 |
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